No problem putting it in gear (drive). These transmissions are fully electronic and will not shift automatically without a transmission control system connected to it. and im curious what could cause this? besides a bad converter in general. First off I have been building transmissions for almost 30 years. When the converter is not locking up you will notice the engine’s RPMs staying higher under load at highway speeds. IMPORTANT: In-store pickup is currently available by appointment only. Now after a long drive it won't come. 2012 F-250 XLT/FX4 RCLB 6. Have a shop verify line pressure, and provided no valves in the TCC hydraulic circuit are worn, replace the torque converter. Torque converter clutch: Variable Bleed Solenoid ECCC: Converter size: 300 mm: Fluid type: DEXRON VI: Fluid capacity with 258 mm converter: 9. the probably cause an incorrect installation of a handle component. Shift suddenly become very hard. And here comes the shameless part - I have a brand new/refreshed Precision Industries Vigilante 10. Edge Racing Converters : 4L80E - Ford Dodge / Chrysler GM Sonnax Billet Servo's Racing Converters, Race converters horsepower, with more torque and low stall, high stall - Streetedge, proedge, racersedge & custom performance torque converters, powerglide. MegaShift™ with the GPIO board has been in use since early 2006 in testing in a variety of vehicles, and has been in production since the Fall of 2009. Has a 350, 4L80E, NP205 Tcase, Dana 60 4. 10s, the motor would be at 2000 rpm at 55, it wouldnt be "happy" at that rpm. More in the next screen shot: We touched on it before, but the Dominator can control GM’s 4L60E and big boy 4L80E electronic control transmissions. The values shown in the chart are to be used as a mid-range guideline. An inexplicable spike in fuel consumption could signify that the torque converter is not working as it should be. truck has a. Street/Strip applications only. Great performance torque converter for a daily driven car. It is important to remember that line pressure is higher in reverse, though. Alright guys, I have a 91 chevy, crewcab, long bed 4x4. On the older HD trucks through 2007 with the 4L80e GM locks the torque converter clutch at wide open throttle at 4000 rpm in second gear. I also like a very manual like feeling from the automatic. 4l80 Main Shaft. The torque converter is set-up for drivability, and the driveshaft (from the driveshaftshop. See more ideas about 4l60e transmission rebuild, homemade tractor, tractor idea. This will be the orange wire with a black stripe on it. Those last few questions may seem odd at first; gear selection may not appear to have an effect on torque converter function. I'm only using 4th on long downhills now. Only available with transmission package. If you get a little more in-depth, you’d notice other parts like the pan, filters, and torque converter all will interchange as well, and the cases look visibly identical. Are you facing 4l80e Transmission problems? Well, the 4l80E Transmission is a 4-speed overdrive transmission. 67 • Programming includes Tap shift feature can be controlled by paddleshifter or floor shifter with Tap control. The transgo kit does 2 main thingsincreases line pressure and "dual feeds" the direct clutch. in 1996ish and up gm auto's they will reduce the pressure to the tcc by adding a pwm solenoid so that it locks up smoother and keeps engine speed up by slipping the tcc clutch, sometimes for a very long time (minutes). As for the Torque Converter, it will do wild things IF the engine has a miss in it under a hard pull, as in a bad spark plug breaking down under a load, like going up a steep hill in lock up. CAUTION: side effects of driving a Camaro include grinimus permintallis otherwise known as "Permagrin" and random, uncontrollable outbursts of "I love this car!!". Then there needs to be a way to unlock with brake application (but not just toggle the relay or it would then lock if it. This item TORCO GM Chevy 4L80 4L80E Torque Converter - ALL engines. Also make sure the torque limiting in the ecm is turned off and that the lockup program on the stock converter is set up right for the new power of the engine. com, of which inverters & converters accounts for 11%, go karts accounts for 4%, and auto shift lever accounts for 1%. If the torque converter does not unlock, the engine will stall. The base engine in all 3/4 ton trucks and suvs is the Vortec 6. 45RFE 45RFE. GREEN (TCC LOCK): Switch to ground to lock Torque Converter Clutch in 2nd-4th gear regardless of vehicle speed. 2005trans6_4L80E_CNG. Then pull the lever back two notches from Park through Reverse to the Neutral position. Art Carr does not believe in using a lock-up torque converter in any aftermarket-engineered, high-performance application. Also, Lubegard Shudder Fix will at least fix this for awhile. Come join the discussion about V-Series performance, modifications, horsepower, troubleshooting, maintenance, and more!. None is used in the California Performance Transmission 2004R. govern lock nuts. This wear typically codes and goes into limp mode preventing OD and TCC lockup. The last thing we'll do before we move on to the Torque Converter Clutch settings is to take care of the Torque Reduction table. But driving it now for a while, I don’t think the converter is really locking up. Last edited by Steeveo; 12-27-2006 at 09:47 AM. possible easy fix 4L80e converter unlock I have been driving around fine tuning my transmission settings trying to maximize gas mileage and I am just convinced that the converter unlocking everytime I let off the gas is killing the mileage. We often take torque converters for granted, but their implementation was a tremendous breakthrough in the development of modern automatic transmissions. Rear End & Suspension. Replacement of all worn or damaged hubs; 100% new Friction Linings; 100% new Bearings; All Pistons machined to exceed factory trueness specs; Outer Diameter trimmed to assist with better balance and function; HD and HP. And of course probably a new. With the 4L80E transmission. Toyota part # 3200-35080". 95 Add to cart; PCM of NC Stage 3 Truck Cam (4. all that torque has to go somewhere and the weakest link in the system is going to take it and break. I am not going to slow down on hills, although always keep it around 65 mph for tire safety sake. 4L80E, 4L85E WHINE NOISE IN FIRST AND SECOND GEAR. Quick View. I have a buddy with a 700R4 with a lockup converter and his rpm drops a lot more than mine does when it shifts into fourth gear. 00 Add to cart HP Tuners Software MPVI2 $ 299. Welcome to the dark world of torque converters. 7 torque converter. The stock shift mapping in my 4L60E was horrible in my Express with 3. I thought these were 4 speed and OD was the torque converter clutch lock up that the button use to bypass. Yes, as long as you use high impedance injectors. all that torque has to go somewhere and the weakest link in the system is going to take it and break. 5" Lift-Vs 2. Get the best deals and fastest shipping on 62TE electronic parts and solenoids like this one for the TCC at Global Transmission Parts. Torque and motion are transferred from one shaft to another over a finite time interval. Manually locking the converter has the side effect of preventing the transmission from down-shifting. As it turns out, aside from a few minor tweaks to fluid routing, clutch return springs, and pistons, the two transmissions are basically identical inside. Vehicle-speed lockup is user Turbo Hydro 350 and 400, which were lockup converter with a loose torque adjustable, and unlocking is based on plenty strong enough for most applica- multiplication, you are basically slipping. Have a shop verify line pressure, and provided no valves in the TCC hydraulic circuit are worn, replace the torque converter. Will a 1992 1500 2wd Chevy Suburban - Cars & Trucks question. General Info. How to fix the problem. Shift point, torque converter clutch on/off, or shift feel changes cannot be made using a scan tool (i. 1979 IH 484 3 cyl diesel rebuilt engine and fully restored. F-BODY Oil Pan Kit. A shot in the dark. View all Torque Converters. As for the Torque Converter, it will do wild things IF the engine has a miss in it under a hard pull, as in a bad spark plug breaking down under a load, like going up a steep hill in lock up. Because of this, any repairs are best left to a professional. When the malfunctioning torque converter cannot deliver the proper amount of power needed by the transmission system, the engine will try to work harder in order to supply the required energy. It has about 740 ft-lb rated torque capacity, and operates at typically 98% efficiency. The basic function of torque converters is to multiply torque so as to cope up with the reducing rotational speeds. Close friends have a 6. Topics are subject to being moved if they can fit into another forum (i. If the cooling system is in good shape heat will not be an issue, Get a good trans cooler and install a lockup switch for the Torque Converter. I had let the car sit for several months while I was out of town. This service includes all new frictions, steels, bands, shift solenoids, rebuild labor, and dyno time. when you hit the brakes – it is used to unlock the torque converter when brakes are. Better to invest in a 6L90E swap, or a maximum-built 700R-4 / 4L70E with a custom torque converter. 3rd/reverse end plug not installed deep enough in VB bore. Both designs have been interchangeable. There's a youtube video of what it looks like on the 4l60e and where it is. We offer free performance advice for your Cummins, Powerstroke or Duramax. cnt Name Last modified Size Description : Parent Directory - à Ñ›. Camaro Questions - please post questions in the specific forums when possible. More in the next screen shot: We touched on it before, but the Dominator can control GM’s 4L60E and big boy 4L80E electronic control transmissions. Tap into this wire, make sure not to cut it, and run from the wire to your switch, through the firewall. Some of the extra wires are for paddle shifting, manual torque converter You can set the % of throttle needed before the converter unlocks. 2 and perhaps 6. Recently, I had the torque converter stop locking. Torque converter shudder in 4th while lockup is engaged; problem goes away when the brake pedal is pressed slightly to unlock converter. Upshifts will happen with the converter locked, but are quite harsh (and probably are very hard on the drivetrain if done during hard acceleration). It will take about 10 minutes before it get s into 2nd with s hard shift then holds a while then 3rd afterwards it’s smooth sailing and warmed up by then but once stopped and parked for a while it starts over again unless it’s not parked long. Will a 1992 1500 2wd Chevy Suburban - Cars & Trucks question. The torque converter is a sealed unit, and as such must be serviced or replaced as a unit. The TH 400 is a 3 speed, no computer required. Engage and Disengage Gears Using a Clutch. If you don't you will have all kinds of trouble. Shift suddenly become very hard. Since you have the 4l80e, you are very limited in regards to such swapping of stock TC's, but all is not lost. 4L80E Transmission Teardown Inspection - Transmission Repair. Ahh, not quite. Trans works perfect until it gets hot than doesn't wanna unlock the converter and wants. Lets say you drive an average of 400 highway miles per week, at that rate you could save as much as $1000. Only has 5000 miles on it but I need one with a higher stall speed to work with my combo. Also, Lubegard Shudder Fix will at least fix this for awhile. Locking the converter shell to the turbine shaft prevents this slippage from occurring. The gearing for the 700 is: First - 3. At 200 lb wet w/ converter, it weighs about 55 lb less than a comparable 4L80E. Note: Pre-1993 4L80E transmissions will need to have an updated internal harness/connector installed to be compatible with the TCU harness. The base engine in all 3/4 ton trucks and suvs is the Vortec 6. 253,000 miles 1992 GMC Jimmy 4. Trans works perfect until it gets hot than doesn't wanna unlock the converter and wants. The 8600 GVW has no catalytic converter or computer. GREEN (TCC LOCK): Switch to ground to lock Torque Converter Clutch in 2nd-4th gear regardless of vehicle speed. Rear End & Suspension. Next is the kit where a shift into 4th gear automatically and immediately engages the lock-up torque converter--one goes immediately from 3rd without lockup into 4th with lockup. Another symptom of a failed TCC solenoid is a fault code. 135-140 lbs, a TH400 weighs 135 lbs, a TH350 weighs 125 lbs. I thought these were 4 speed and OD was the torque converter clutch lock up that the button use to bypass. It does not include the converter cut and clean, or hard parts. Torque and motion are transferred from one shaft to another over a finite time interval. The car is a 2000 pontiac trans am, has a pretty big cam, and a 4000 stall midwest converter. 700R4 Transmission, Rebuilt 700R4 Transmission, 700R4, Monster Transmission offers free shipping on 700r4 transmissions, also offering completely rebuilt 700r4 transmission and overdrive conversions, 700r4 rebuild. Without a proper Park/Neutral position input from the transmission range sensor, the PCM will not be able to crank the engine over for starting. Only available with transmission package. The brake switch should be closed (not electronically connected) when brakes are not being applied and open (not electronically connected) when brakes are being applied. With the torque multiplication of the low first gear plus a high stall converter, I'm getting close to the limit. not allow adapt function. doc 2005trans6_4L80E_CNG. Is it not shifting into OD (4th gear) or is the converter not locking up? The temperature control only prevents lockup till warm. Torque converter not engaged in pump drive. Not the 700R4. Art Carr does not believe in using a lock-up torque converter in any aftermarket-engineered, high-performance application. July 17, 2020. You should have received the following items:. Only problem is I tow a 6000 #ish load regulary on some hilly roads and I don't want the torque converter lock up to burn out. I'm suspicious that its something pump related since higher rpms lead to higher temps, regardless of airflow on the coolers. 4l80 Main Shaft. But just listen and watch!. What about size/weight of the 4L80E? The 4L80E weighs 178 lbs in typical configuration. How to fix the problem. Re: Disco 2 Td5 auto torque converter lockup: advice please Whether it is n "S" or not didn't make any perceived difference for gearing down from 100 km/h. Not the 700R4. it was fine for like the first 6 months, then it started having some problems. 4 lock is locked in all the time and auto is not so on dry pavement auto is reall never fully engaged while lock allways is, all it take is front and rear tires to spin at slightly different rates and u have damage done. It has no slippage so heat can not be excessive. 56, 14 bolt FF 4. Click to get the latest Pop Lists content. The torque converter is set-up for drivability, and the driveshaft (from the driveshaftshop. FDA-Approved Indications. A C6 3-speed automatic transmission makes for easy cruising and unbeaten reliability, and it rolls on a set of slick 20-inch Luxx chrome wheels with low-profile rubber that looks right. If you've got an oil seal leak in a very inconvenient place, then this video by Scotty Kilmer will show you how a little bottle of re-sealer may be able to fix that leak. It is that simple. Toyota part # 3200-35080". 2000 Gmc Savana Technical Service Bulletins. Yanks Super charged series converters are built on a 10. So besides a bad torque converter clutch soleniod what could it be? I can not afford the time to drop it and looksee inside for issues. Both designs have been interchangeable. Performance Torque Converter Options for the GM 4L80E Transmission Our High Performance Torque Converter line is for the street car enthusiast with a few mods and is very budget friendly. Those last few questions may seem odd at first; gear selection may not appear to have an effect on torque converter function. Is this problem the torque converter, one of the sensors (I've replaced the 2-speed sensors) or the trans itself? Answer: Most likely the torque converter is stuck in lock up, so it could be the lock up solenoid or something internally wrong in the torque converter. I know of many 1991-1993 V6 Toyota dually trucks with V6s that were built without the lock-up torque-converters. Car does not start or cannot move. 5" Billet Lock Up Street Racer Torque Converters offer Unbeatable Performance & Reliability for the Weekend Warrior. 4l80 Transmission. And of course probably a new. Learn how to tune GM's 4L60E / 4L65E transmission using HP Tuners to get the drivability and gear shifting that you want and that suits your driving style. with your tcc disable above 100% tps it wont unlock till above 100%tps so i would set that to something like 50-60% and lower lockup decay time and set relock delay to about. Truck is C6P chassis, 8600 GVW, emissions exempt. 135-140 lbs, a TH400 weighs 135 lbs, a TH350 weighs 125 lbs. As it turns out, aside from a few minor tweaks to fluid routing, clutch return springs, and pistons, the two transmissions are basically identical inside. If you've got an oil seal leak in a very inconvenient place, then this video by Scotty Kilmer will show you how a little bottle of re-sealer may be able to fix that leak. I've ran it with fair success with lock up in 6th gear only using universal aftermarket transmission controllers that were or have been available but haven't been satisfied, especially shifting with the torque converter locked. 1992 GMC Sierra 2wd 6. The independent front suspension includes power steering, power front disc brakes, and a fat sway bar, while out back a GM 10-bolt rear end handles the torque. Your path: TSB Home >> 2000 >> 2000 Gmc >> 2000 Gmc Savana The following TSB(s) may apply to your 2000 Gmc Savana. When the converter is not locking up you will notice the engine’s RPMs staying higher under load at highway speeds. Tap the brakes or hit the gas, anything to cause the torque convert to release and it quits. Plus a crappy OD ratio. This service includes all new frictions, steels, bands, shift solenoids, rebuild labor, and dyno time. You should have received the following items:. Is there a precise way to know if/when my torque converter is locked up/unlocking on a Nissan Maxima 2002? Most answers I've found over the internet is "by feeling". Torque converter problems can be both very time consuming and expensive. You can use a scan tool to monitor the TCC slip speed. So it would be like starting out off the line with a gear that's higher than a t5's 2nd gear! So I see a very weak 60' time, or a very hot converter coming outa the hole. Normally connected to brake pedal switch to unlock TCC when brakes are applied. When the malfunctioning torque converter cannot deliver the proper amount of power needed by the transmission system, the engine will try to work harder in order to supply the required energy. Then pull the lever back two notches from Park through Reverse to the Neutral position. Turn off engine again and restart; Shifts correctly then repeat Items 2-6. 《美麗日報》堅持維護新聞倫理觀,在發揮媒體傳播功能的同時,堅持為社會樹立正確導向。我們希冀匯聚良善的力量,傳遞正面能量,促進人們的相互理解和尊重。. Making things even better, the search function works reasonably well, which is a feature most factory service manuals do not contain. ** Torque values for 1/4" and. 4L80E Torque Converters; 4L65E Torque Converter; 4L60E Torque Converters (1999 & Up) 300mm; Unlock the tab and slide housing towards bare cable 5/16" and lock tab. 2019 · The torque converter needs to be replaced, which requires between $300-$500 for a replacement, lockup, 4L80E converter. Chevrolet 4L80E Transmissions Torque Converters. and im curious what could cause this? besides a bad converter in general. Flip the toggle switch to position one, and the lock-up clutch is engaged, so transmission temperature remains low and the exhaust brake can work with 100-percent effectiveness (this is a manual setting and should only be selected under light load/light power conditions, such as highway. Same crappy ratios in first and second. The torque converter is a sealed unit, and as such must be serviced or replaced as a unit. I am not going to slow down on hills, although always keep it around 65 mph for tire safety sake. Using long tube stainless is great way to go for torque and longevity. Truck is used for hauling semi parts (hubs, brakes, fluids), and sports a snow plow in the winter. 4 Torque Converter whine US Shift Electronic Transmission Control Systems let you take charge of your 6R80, 4R70W, E4OD, 4R100, 4L60E, or 4L80E transmission and unlock its true potential. Quality Inspected for your peace of mind and ready to ship! Most orders can be delivered in a matter of days, if you need a transmission by a specific date please call 800-708-0087. Andrew Jessiman. My truck is new to me but well used at 188K. " First, hold the torque converter horizontally and face down (bolt holes facing towards the ground) so that the fluid will not drain back out. But driving it now for a while, I don’t think the converter is really locking up. Only has 5000 miles on it but I need one with a higher stall speed to work with my combo. Not Yet Reviewed. Re: 4L80E torque converter kicking out Jan 18 2017, 11:01am I just went through all the code definitions on a 2012 4Lseries trans and The only codes that may be set are TCC solenoid circuit faults and Solenoid stuck on or stuck off. I am trying to perform troubleshooting, as I had the transmission rebuilt, and a shift kit installed with a new Torque Converter due to the old transmission having milky fluid from sitting out at the junkyard, but showing the same symptoms as this newly rebuilt one. TECHNICIAN ABOUT VEHICLE THAT AFTER A TRANSMISSION OR TORQUE CONVERTER REPLACEMENT THE VEHICLE MAY HAVE A HARSH 1-2 UPSHIFT AND THE CHECK. They are bolted to the engine and provide a fluid coupling to the transmission. The housing of the torque converter is bolted to the flywheel of the engine, so it turns at whatever speed the engine is running at. 1 product rating - B&M 70431 Torque Converter, Traveler Converter GM 4L80E. When it comes to automatic-equipped street machines and drag-race cars, the torque converter is a welded-up magic box that few enthusiasts know much. 65" Hub 1998-UP Chevy Truck 5. Torque converter shudder in 4th while lockup is engaged; problem goes away when the brake pedal is pressed slightly to unlock converter. If I tap the brakes slowing down to unlock the tcc it will down shift just fine. A stuck valve, trash in the fluid or an air pocket, usually causes this. Once it got to 180 it would not come back. Included Connectors:. I spoke with the PO of the truck and found out that the transmission has been gone through 2 years ago Clutches, internals, Triple Disk TC, VB, Pressure Plates etc. So my 93 1 ton with a 4l80e will not go into forth or overdrive. Help with 4L80e torque converter lockup. Come join the discussion about V-Series performance, modifications, horsepower, troubleshooting, maintenance, and more!. Fuse Location and Description. NHTSA ID: 10017462 TSB ID: 050730017 4l60-e/4l65-e automatic transmission/torque converter clutch (tcc) shudder, water in transmission. Torque converter clutch: Variable Bleed Solenoid ECCC: Converter size: 300 mm: Fluid type: DEXRON VI: Fluid capacity with 258 mm converter: 9. 4L80E/4L85E Torque Converter 4L80E/4L85E Torque Converter Family: Torque Converter Remanufacturing Standards GM 4L80E / 4L85E. It has about 740 ft-lb rated torque capacity, and operates at typically 98% efficiency. Your Torque converter might be unlocking because of a bad temp sensor. 2 w/ 8L90E Standalone Harness. A stuck valve, trash in the fluid or an air pocket, usually causes this. in 1996ish and up gm auto's they will reduce the pressure to the tcc by adding a pwm solenoid so that it locks up smoother and keeps engine speed up by slipping the tcc clutch, sometimes for a very long time (minutes). 4-inch in width and 2-pounds in weight. These transmissions also contain gears, but an additional component called a torque converter, which uses the transmission oil we are talking about. com, of which inverters & converters accounts for 11%, go karts accounts for 4%, and auto shift lever accounts for 1%. I called all of the major Torque converter companies and only 1 or 2 recommended locking the converter in 2nd or 3rd under full throttle. Lucas Transmission Fix is a non-solvent formula that stops slip, hesitation and rough shifting in worn transmissions and completely eliminates most seal leaks. Sometimes my 4l80e will shift into 4th early and lock the converter at low speed. 11/08/05: Transmission and Drivetrain: NHTSA ID: 10017464 TSB ID: 05-04-21-003 Service 4wd light illuminated, diagnostic trouble code (dtc) c0374 set. *rm updated on 7/26/2013. It renews the warranty. All 6L80's are torque base shifted units. The 8600 GVW has no catalytic converter or computer. Only problem is I tow a 6000 #ish load regulary on some hilly roads and I don't want the torque converter lock up to burn out. Running a Pro torque converter and it is awesome. 1 JL slash amp/Recon f250 led. Locate your Powertrain control module, and on the connectors, locate wire B11. 4l80e Tcc Tuning. 1993 Instrument Panel Fuse Box GM 4. Truck is C6P chassis, 8600 GVW, emissions exempt. 56, 14 bolt FF 4. It does make a difference to the point that it gears back up though, it holds 3 for longer before gearing up. A couple weeks ago I took my 6th gen (3-speed auto, A131L) onto the highway, 65+ mph and I noticed it started unlocking the torque converter while cruising. Another unique thing is the 700R4 and controls. Converter shuttle in and out-scan tool shows converter unlocking Engine with worn distributor bushings throwing RPM signal out of range-most common on big. The base engine in all 3/4 ton trucks and suvs is the Vortec 6. August 03, 2020. But even with them, you will not see much because the torque converter is a sealed unit. First of all. If you find that the torque converter lockup experiences "busyness" (shuttles on and off rapidly) at cruise conditions it is probably because your engine vacuum under that particular condition is right where the switch turns on and off. KEYTRUDA may be used with the chemotherapy medicines pemetrexed and a platinum as your first treatment when your lung cancer has spread (advanced NSCLC) and is a type called "nonsquamous" and your tumor does not have an abnormal "EGFR" or "ALK" gene. Flip the toggle switch to position one, and the lock-up clutch is engaged, so transmission temperature remains low and the exhaust brake can work with 100% effectiveness (this is a manual setting and should only be selected under light load/light power conditions, such as highway driving). My question is he stated that the truck was super fast before he had the. Only problem is I tow a 6000 #ish load regulary on some hilly roads and I don't want the torque converter lock up to burn out. Performance Converter Kit GM-RK-485WC. the torque converter will not lock up at all. If you find out how, I will post it up as many are having this issue. It takes the place of a mechanical clutch, and, within certain operating speed ranges, multiplies input torque, providing the equivalent of a reduction gear. Classic Industries offers a wide selection of 1969 Chevrolet Truck parts, including 1969 Chevrolet Truck interior parts and soft trim, 1969 Chevrolet Truck exterior sheet metal, 1969 Chevrolet Truck moldings, 1969 Chevrolet Truck emblems, 1969 Chevrolet Truck weatherstrip and unique accessories, to nearly every nut and bolt needed for installation. A 4L60E weighs approx. So I was thinking of a 3. Just because the converter locks up does not mean the engine is going to be thousands of rpm lower. 0 single cab with a 4l80e. This is brand new complete Torque Converter comes with all parts necessary to fit it to your go kart or buggy. The torque converter clutch lock and unlock are based on the position of the throttle, actual road speed, and gear selected. Torque Converter, Yank Cadillac CTS-V, Supercharged, 6L80E/6L90E, 2800 Stall. $100 off major repair coupon. Oct 11, 2020 - Explore Scott Luman's board "4l60e transmission rebuild" on Pinterest. The seal is pretty cheap, but you have to pull the transmission off to replace it, which can take a serious amount of time. TCC Slip is between -15 RPM and +15 RPM Engine running > 400 RPM > 7. Diameter: 10". A common problem on many General Motors cars is the Torque Converter Clutch fails to release and causes the car to stall when it comes to a stop. To set idle on a LS1 computer is a skill best approached with practice. When the malfunctioning torque converter cannot deliver the proper amount of power needed by the transmission system, the engine will try to work harder in order to supply the required energy. A new replacement torque converter costs between $100 and $400, depending on the vehicle model and converter type. The torque converter is a sealed unit, and as such must be serviced or replaced as a unit. As far as heat; the GV doesn't get any hotter than a rear-end. I've scanned the trans temp in hptuners scanner and it isn't getting. It doesn't like to down shift once in 4th when slowing into a town. The system uses a miniaturized version of the same control software and electronics as the COMPUSHIFT Sport. 2005trans6_4L80E_CNG. The part was very well packaged. 5 hours, there is a few more things to wire when running an electronic transmission such as the torque converter unlock and vehicle speed sensor output. Stalling is when the torque converter locks up during a load. 6L80, 6L90 Torque Converter Tech Advisory: Inner Stator Race Edge. Here are the most A widespread symptom of a defective torque converter is that the transmission slips when I have a 2007 Volvo XC90 V8 with a Tf80sc transmission i keep having problems with the metal clad seal on. First the disclaimer. Torque Converter Clutch. The transmission itself is still a 3-speed with ratios of 2. If the torque converter does not unlock, the engine will stall. There's a youtube video of what it looks like on the 4l60e and where it is. The traditional torque converter, as many of our readers are acutely aware, is a fluid coupling device that’s used to transfer rotational forces from a power source, in this case an internal combustion engine, to a rotating driven load. You're at the upper limit of what the trans can handle without beating on it. The basic function of torque converters is to multiply torque so as to cope up with the reducing rotational speeds. i had him rebuild the tranny with commercial/heavy duty grade parts, a B&M shift kit and corvette servo. The cutaway below shows how everything is connected inside the torque converter. With these four parts you can convert your 727 transmission to a 518 overdrive transmission with locking torque converter. My truck is new to me but well used at 188K. When it comes to automatic-equipped street machines and drag-race cars, the torque converter is a welded-up magic box that few enthusiasts know much. 1 JL slash amp/Recon f250 led. Most often when I have a problem with the converter clutch lock up causing an engine stalling condition I find a problem with the tcc solenoid. Hard to say if your torque converter is the problem, or if its the victim of a problem. The torque converter will contain a few quarts of fluid. 3L 4x4 4L60E synthetic oil. 2019 · The torque converter needs to be replaced, which requires between $300-$500 for a replacement, lockup, 4L80E converter. Locking the converter shell to the turbine shaft prevents this slippage from occurring. I appreciate the information is the same as the factory service manual information. Increased Fuel Consumption. I'm only using 4th on long downhills now. A couple weeks ago I took my 6th gen (3-speed auto, A131L) onto the highway, 65+ mph and I noticed it started unlocking the torque converter while cruising. My truck is new to me but well used at 188K. When the malfunctioning torque converter cannot deliver the proper amount of power needed by the transmission system, the engine will try to work harder in order to supply the required energy. Torque Converter Clutch. Installing/using this switch is hard on your transmission and your torque converter, BUT so is racing in general. A wide variety of torque converters options are available to you, There are 465 suppliers who sells torque. The solenoid could be the problem. 5L F engine, 4L80E, torque converter lockup switch, rear airbags. Posted By: gitane59 on 09/28/09 03:11pm I found the limits of my 2-valve V10 gasser this week while towing on the I64 between Beckley, WV and Charlottesville, V. I have written about torque converter clutch problems in other posts but this one will be a little different. Shop 1970 Ford Torino Transmission parts and get Free Shipping on orders over $99 at Speedway Motors, the Racing and Rodding Specialists. Edge Racing Converters : 4L80E - Ford Dodge / Chrysler GM Sonnax Billet Servo's Racing Converters, Race converters horsepower, with more torque and low stall, high stall - Streetedge, proedge, racersedge & custom performance torque converters, powerglide. How do i unlock a lock -up converter; 4l60E blowing fuse; My th400 just stop working; Help- NSS switch install; What would cause this; Open House/Car Show Tomorrow; th400 tci ls/th400 torque converter not seating; bad transmission; Does all Manual Valve Body have Check Balls? torque converter getting very hot; Transmission Sale; 4L80e with HD2. I called a transmission shop and they said it could be as simple as the wrong transmission fluid used, to a bad torque converter, to a new transmission. Despite how it may be called out in the instruction sheet, the most common problem causing transmission failure is not engaging the torque converter on the input shaft. I have written about torque converter clutch problems in other posts but this one will be a little different. 8 as that is how long it takes for a shift to complete. I thought these were 4 speed and OD was the torque converter clutch lock up that the button use to bypass. Only problem is I tow a 6000 #ish load regulary on some hilly roads and I don't want the torque converter lock up to burn out. As the pressure regulator valve is being stroked toward the high pressure position, it also may be limiting the flow of charge/TCC release oil. 0 single cab with a 4l80e. Install the torque converter. Your path: TSB Home >> 2000 >> 2000 Gmc >> 2000 Gmc Savana The following TSB(s) may apply to your 2000 Gmc Savana. Buick 2003 3. The cutaway below shows how everything is connected inside the torque converter. It is similar to running over a rough spot on the road or running over a cattle guard. Note the simple drop down menus. It just picked up a '93 GC with a 5. 2 and perhaps 6. Street/Strip applications only. One of the reasons they are so aggressive with slipping in the torque converter is so you cant feel switching between 4 cylinder mode and 8 cylinder mode. Shifting to third gear was accomplished by engaging the torque converter lockup clutch. Making things even better, the search function works reasonably well, which is a feature most factory service manuals do not contain. A stuck valve, trash in the fluid or an air pocket, usually causes this. Will A 4l60e Torque Converter Fit A 4l80e. Shift point, torque converter clutch on/off, or shift feel changes cannot be made using a scan tool (i. I plan to try the Extreme Duty Power Raptor Lock-up. Converter shuttle in and out-scan tool shows converter unlocking Engine with worn distributor bushings throwing RPM signal out of range-most common on big. 6L80E Transmission HD Remanufactured Chevy Gm Six-speed Automatic 2WD Time commitments may vary as this is a custom built. Better to invest in a 6L90E swap, or a maximum-built 700R-4 / 4L70E with a custom torque converter. Cracked rear servo piston, or band anchor pins moved down in the case and band is rubbing drum. First the disclaimer. 11/08/05: Transmission and Drivetrain: NHTSA ID: 10017464 TSB ID: 05-04-21-003 Service 4wd light illuminated, diagnostic trouble code (dtc) c0374 set. There's a youtube video of what it looks like on the 4l60e and where it is. Trans works perfect until it gets hot than doesn't wanna unlock the converter and wants. Command the torque converter to stay locked, stay unlocked, or revert to OEM settings with the BD TorqLoc. 75:1 (Fourth), and 2. 253,000 miles 1992 GMC Jimmy 4. How to fix the problem. Quick View. The torque converter will slide onto the input shaft three times, each time seating further into the bellhousing followed by a "clunk. Easy to use parts catalog. To regain that efficiency, a lock-up clutch is introduced. The tcm in an 11 is pretty straightforward with a not nearly as many parameters as the 14 plus stuff. com, of which inverters & converters accounts for 11%, go karts accounts for 4%, and auto shift lever accounts for 1%. Lucas Transmission Fix is a non-solvent formula that stops slip, hesitation and rough. Normally connected to brake pedal switch to unlock TCC when brakes are applied. " First, hold the torque converter horizontally and face down (bolt holes facing towards the ground) so that the fluid will not drain back out. It does provide two different stall speeds in the torque converter, and this might be considered to be an "extra gear". Just my thoughts here, but usually they're in the range of 1. It doesn't like to down shift once in 4th when slowing into a town. Read up on TCC hydraulics. It normally used to stay locked up over 45mph unless I really floored it. Torque converter shudder is a shudder or brief shake in the vehicle after internal clutches apply in the torque converter. The transgo kit does 2 main thingsincreases line pressure and "dual feeds" the direct clutch. The drone you get is the lower RPM load but if the RPM's will somewhat stay put under load with slight pressure on the gas pedal then the torque converter clutch (TCC) is holding. I purchased a transmission in dec. Quick View. The reason for the relays is so you can run the 80e with the 60e tune so the torque converter stays locked while at 0% throttle. So I was thinking of a 3. What are the symptoms of a torque converter that won't unlock? I've been trying to understand how it works to see if I'm suffering from this problem. A torque converter prevents. If using a 4L60E or 4L80E transmission, you will need an add on MicroSquirt to control the transmission. Install the torque converter. it was fine for like the first 6 months, then it started having some problems. Use in any transmission for preventative maintenance. 5" blocks in the rear, tires are 38. Are you facing 4l80e Transmission problems? Well, the 4l80E Transmission is a 4-speed overdrive transmission. TECHNICIAN ABOUT VEHICLE THAT AFTER A TRANSMISSION OR TORQUE CONVERTER REPLACEMENT THE VEHICLE MAY HAVE A HARSH 1-2 UPSHIFT AND THE CHECK. Torque converter shudder in 4th while lockup is engaged; problem goes away when the brake pedal is pressed slightly to unlock converter: Need to verify line pressure, and provided no valves in the TCC (Torque Converter Clutch) hydraulic circuit are worn, replace the torque converter. It just slides into the front of the trans. position, vehicle speed and gear selec- most street rodders were using the converter lockup. Performance Converter Kit GM-RK-485WC. So I was thinking of a 3. Most often when I have a problem with the converter clutch lock up causing an engine stalling condition I find a problem with the tcc solenoid. Flex plate: You will need a flexplate and spacer from ¾ ton GM truck that originally came with a 4L80E. "No they did not. GM TORQUE CONVERTER, 4L80E, 4L85E, LS MOTOR, TRIPLE CLUTCH 3200 STALL. Could be the clutch itself in the converter is slipping from worn frictions. Dodge Cummins 5. 0L with a 4l80e transmission, for the past few days my torque converter hasnt been locking up. Shift suddenly become very hard. A Tip to Protect Your GM 6L-Series Converter Build. OIL PRESSURE (only on DBC, 1999-2002) - LIGHT BLUE. 2019 · The torque converter needs to be replaced, which requires between $300-$500 for a replacement, lockup, 4L80E converter. Some of the extra wires are for paddle shifting, manual torque converter You can set the % of throttle needed before the converter unlocks. in 1996ish and up gm auto's they will reduce the pressure to the tcc by adding a pwm solenoid so that it locks up smoother and keeps engine speed up by slipping the tcc clutch, sometimes for a very long time (minutes). 00 Add to cart HP Tuners Software MPVI2 $ 299. Torque Converter Clutch Circuit Malfunction. 8 as that is how long it takes for a shift to complete. Compare with similar items. 67 • Programming includes Tap shift feature can be controlled by paddleshifter or floor shifter with Tap control. I have a buddy with a 700R4 with a lockup converter and his rpm drops a lot more than mine does when it shifts into fourth gear. 2019 · The torque converter needs to be replaced, which requires between $300-$500 for a replacement, lockup, 4L80E converter. Your the web guy look it up. First the disclaimer. If you see the slip keep rising to about 220 - 250 RPM Slip it will kick the converter off. shift points, shift firmness for various throttle/torque level, Sport/Tow Haul calibration tables. not 100% sure how it all works and what years it was on and if it was 4l60e or 4l80e but if you go to a good transmisson shop they should check it. Command the torque converter to stay locked, stay unlocked, or revert to OEM settings with the BD TorqLoc. This is the opposite of a standard brake switch. Turbo 350 Torque Converter. I'm not 100% sure about this but If i remeber correctly there is a temp sensor and the convertor is supposed to not lock up until the trans is above a certain temp. 4L80E, 4L85E WHINE NOISE IN FIRST AND SECOND GEAR. com) is still in the box and has not been opened. Although not strictly a part of classic torque converter design, many automotive converters include a lock-up clutch to improve cruising power transmission efficiency and reduce heat. 6L80, 6L90 Torque Converter Tech Advisory: Inner Stator Race Edge. Now when my torque converter locks up, it doesn't slip in or out of it. If the cooling system is in good shape heat will not be an issue, Get a good trans cooler and install a lockup switch for the Torque Converter. 2 like 1993-1996, like used for small school busses and box vans. PCM Connector: Blue (C1) 1998-99 In this article, you'll find the Pin Out descriptions of the 4 PCM Connectors for the 1998-1999 GM 4. Even keep my torque converter locked at 0% TPS and during DFCO. No problem putting it in gear (drive). This series of converters are designed to work well with positive displacement super chargers. Not a good bang for the buck! Spend the money on the intake and exhaust track, muffler and pipe system. Performance Torque Converter Options for the GM 4L80E Transmission Our High Performance Torque Converter line is for the street car enthusiast with a few mods and is very budget friendly. Transmission solenoids are one of your automatic transmission’s many critical components. 2005trans6_4L80E_CNG. If you find that the torque converter lockup experiences "busyness" (shuttles on and off rapidly) at cruise conditions it is probably because your engine vacuum under that particular condition is right where the switch turns on and off. Last edited by Steeveo; 12-27-2006 at 09:47 AM. Tap into this wire, make sure not to cut it, and run from the wire to your switch, through the firewall. Is ther a way I can wire up a 'tow/haul' switch to manually unlock the converter like the newer trucks? Thanks!. 99 Add to cart Relocated Oil Pump Pickup Tube Kit TBSS & SSR. The basic function of torque converters is to multiply torque so as to cope up with the reducing rotational speeds. I never had a power pulling issues with it. Considering the requirements of dynamic performance and quality during the torque converter locking process, a two parameters latch-up control strategy was designed, and a simulation method to. The seal is pretty cheap, but you have to pull the transmission off to replace it, which can take a serious amount of time. About 10K miles ago, I started noticing that at lower speeds when the torque converter should be fully locked (50-60MPH), that it will lockup like expected, but then there will be a couple seconds of slippage, allowing the engine RPM to increase 200-400 RPM, and then back to full lock. The reason for the relays is so you can run the 80e with the 60e tune so the torque converter stays locked while at 0% throttle. 9 1/2 inch converter with 12" carbon fiber clutch rated for 700 hp and lock it at 70-80 mph. ive messed with the tune in HP tuners and tried commanding it in HP tuners but nothing will make it lock up. More in the next screen shot: We touched on it before, but the Dominator can control GM’s 4L60E and big boy 4L80E electronic control transmissions. 45RFE 45RFE. Replacing a failed transmission can be very costly, which is why it's so important to find the best price you can for a replacement online. Solenoids are electro-hydraulic valves. 0 shocks/PMF DSS w' Bilstein 5100s/Icon Adj Track Bar-upgraded steel bearing/RIGID LEDs/Kenwood DNX570HD w/idatalink maestro/Hertz5x7s/Memphis 12" slim/500. Take A Sneak Peak At The Movies Coming Out This Week (8/12) JoJo Siwa ‘super-duper happy’ after coming out as queer. If you find that the torque converter lockup experiences "busyness" (shuttles on and off rapidly) at cruise conditions it is probably because your engine vacuum under that particular condition is right where the switch turns on and off. Tips for Safe Pressure Switch Removal in U660E Transmissions. The valve body did correct my hard engagment and 1-2 hard shifting as I expected, it also fixed my torque converter shutter when lock-up came on, witch I did not expect. Unit Size: 265mm. The TH-400 switch pitch torque converter DOES NOT provide overdrive. 5" Triple Disc 3600 4l80e torque converter up for sale. Not true Jeff, that if it fails open it will lock up. 2 Torque Converters 101: Lock-Up Torque Converters. Trans works perfect until it gets hot than doesn't wanna unlock the converter and wants. We'll show you how we tuned a 4L65E to give us both a much more aggressive downshift schedule as well as a much cleaner and smoother short-shift schedule at light throttle that saved us a bunch of fuel during part-throttle cruise. Come join the discussion about performance, modifications, racing, restoration, classifieds, troubleshooting, maintenance, and more!. 340,000 K's and only problem I have is a torque converter stutter when it tries to unlock in drive and OD. As soon as it goes into gear the engine stalls. If you have a "busyness" problem the switch can be reset. It has about 740 ft-lb rated torque capacity, and operates at typically 98% efficiency. For example, the Torque Converter Clutch (TCC) for converter lockup bangs pretty hard if just ON/OFF, and an adjustable tapered PWM is usually employed to soften the engagement. Just as quick as it happened, it’s gone until. Torque Converter Not Locking Up: The torque converter on most modern automatic transmissions is made to lock up in order to allow for a physical connection 04. I have built thousands of 4l80e transmissions. You can unplug power from it and if the mechanicals are working properly (valve in pump and valve train in valve body) you can drive around without the converter ever alocking. where do i start to try. I have never heard of the 4L80E as a base trans in a 1500 either. It does provide two different stall speeds in the torque converter, and this might be considered to be an "extra gear". Trans works perfect until it gets hot than doesn't wanna unlock the converter and wants. TCC Brake Switch Signal is 12V+ when brakes are NOT pressed, and the switch OPENS. RockAuto ships auto parts and body parts from over 300 manufacturers to customers' doors worldwide, all at warehouse prices. For instance, if you have a car that has a 2,500 RPM stall converter, and then you hold both gas and brake at the same time, like you were going to power brake, then general RPM that the tires will break loose at is going to be 2,500 RPM. i have a 98 camaro with 4l80e and PSI wire harness and pcm. 4 cylinders did not have O/D because the engines did not have enough guts to keep it from unlocking at highway speed. A switch pitch converter requires some modifications in the internal of the gearbox: the input shaft has an internal passage that allows for an additional flow of fluid that changes the pitch of the converter. Next is the kit where a shift into 4th gear automatically and immediately engages the lock-up torque converter--one goes immediately from 3rd without lockup into 4th with lockup. Ford 6R80 High-Stall, Lock-Up Torque Converter (3800-3900 RPM Stall) 457020. I do not get the shudder in 3rd or at high speed (freeway speed) I took it back to the place where I got my service done and they said I need a new transmission. Has a 350, 4L80E, NP205 Tcase, Dana 60 4. The guy who I bought it from said the trans has a lockup converter and that everything worked great. These transmissions also contain gears, but an additional component called a torque converter, which uses the transmission oil we are talking about. 4 Torque Converter whine US Shift Electronic Transmission Control Systems let you take charge of your 6R80, 4R70W, E4OD, 4R100, 4L60E, or 4L80E transmission and unlock its true potential. In my opinion that is not the right way and kind of a hack job(no offense). With these four parts you can convert your 727 transmission to a 518 overdrive transmission with locking torque converter. PCM Connector: Blue (C1) 1998-99 In this article, you'll find the Pin Out descriptions of the 4 PCM Connectors for the 1998-1999 GM 4. 3 flex plate. It is lifted 6" via springs in front and 5. Drove and raced the car all year last year and parked it with everything working perfect. This example shows a gear being engaged, then disengaged, by a custom clutch. A torque converter is a hydraulic fluid coupling that is used to transmit power from one or more engines or motors to a driveshaft or other output shaft. So my 93 1 ton with a 4l80e will not go into forth or overdrive. Will A 4l60e Torque Converter Fit A 4l80e. There was what seemed like about a 3 mile grade of what must have been between 5-7% climb. Locate your Powertrain control module, and on the connectors, locate wire B11. If the torque converter does not unlock, the engine will stall. These transmissions are fully electronic and will not shift automatically without a transmission control system connected to it. CAUTION: FAILURE TO WIRE THE TCC SWITCH CORRECTLY WILL RESULT IN A DANGEROUS SITUATION IN THE VEHICLE WHERE THE TORQUE CONVERTER MAY NOT UNLOCK. Torque Converters Every unit passes through a 7-stage certification process and is backed by a 4-year, 100K-mile warranty. 4l80 Main Shaft. Is there a precise way to know if/when my torque converter is locked up/unlocking on a Nissan Maxima 2002? Most answers I've found over the internet is "by feeling". TH200-4R Swap The TH200-4R has been available almost as long as the TH700-R4 but is unanimously overlooked. Read up on TCC hydraulics. It came with great information for installation including commonly made installation mistake corrections. 4L80E’s used in motorhomes and trucks have a. I called a transmission shop and they said it could be as simple as the wrong transmission fluid used, to a bad torque converter, to a new transmission. Alright guys, I have a 91 chevy, crewcab, long bed 4x4. May want to find someone with a GM Tech II, or at least a GOOD scan tool to do this (a good scan tool being one that supports vehicle specific PID's, not just generic OBDII). To regain that efficiency, a lock-up clutch is introduced. So the question is, is that what I'm going to find in a 3500 cutaway van with 6. The 68RFE has a larger outer diameter and the impeller hub has four D- flats and the 45RFE. Part Number: NAL-19299804 Not Yet Reviewed. Transmission Removal - Part 1. This 30 Series TAV2 Torque Converter will get the most performance out of your go kart. Lets say you drive an average of 400 highway miles per week, at that rate you could save as much as $1000. The 3/4 tons used the 4L80E in them. There should be one next to the Injector pump on the water crossover. You must put a 4L80E lock up converter back in it. Now after a long drive it won't come. The 8600 GVW has no catalytic converter or computer. If you have a "busyness" problem the switch can be reset. 7 Powerstroke H&S XRT Pro Race(550hp/1100tq)/ 4" flopro exhaust/H&S EGT kit/SPE Full diff unlock/S&B CAI/H&S motorsports upcharge pipe kit/ DPF,CAT,EGR,UREA Deleted/Icon 3. I have a 1999 1500 2wd Chevy Suburban and my transmission went out. This service includes all new frictions, steels, bands, shift solenoids, rebuild labor, and dyno time. All other torque values are in foot lb. The main symptom of a TCC solenoid failure is the converter is not locking up. This allows slipping as fluid bypasses the valve instead of holding the clutch. At 2300 RPM that's 278 ft-lbs required to deliver that power. This is a discussion on Transmission Removal - Part 1 within the Automatic Transmission forums, part of the Drivetrain category; Subscribed cuz my ugly mug is in there. These transmissions are fully electronic and will not shift automatically without a transmission control system connected to it. 4L80E’s used in motorhomes and trucks have a. Push the manual lever at the transmission fully toward the torque converter end of the transmission. Converter weights will be similar for a given combination with the same size converter. Locking the converter shell to the turbine shaft prevents this slippage from occurring. To prevent slipping at certain speeds (normally speeds exceeding 37 mph) a lockup clutch located inside the converter locks the engine’s output drive to the transmission’s input shaft to achieve a 1:1 ratio – meaning 100% of the. The speed limit here is 55mph, if I ran 4. Torque converter not engaged in pump drive. PCM Connector: Blue (C1) 1998-99 In this article, you'll find the Pin Out descriptions of the 4 PCM Connectors for the 1998-1999 GM 4. they promised to send with it, again 3. The only draw back is that you can kind of notice the tcc lockup, just like you used to be able to on older 4l80e's and 4l60e's that didn't have that stupid tcc pwm valve. 2 w/ 8L90E Standalone Harness. 0 single cab with a 4l80e. Also, Lubegard Shudder Fix will at least fix this for awhile. Dodge Cummins 5. The shift pattern is not affected. If the torque converter does not unlock, the engine will stall. Torque Converter Stator Failure. It just "shifts" into it. the torque converter will not lock up at all. Did not use 3rd gear/ TCC locked nearly enough. Torque Converters Every unit passes through a 7-stage certification process and is backed by a 4-year, 100K-mile warranty. For a while there were indeed vans that were equipped with the Vortec 4. The TH700 uses a unique torque converter that will bolt right up to a TH350's flexplate. Most torque converter shudders happen at about 45MPH. A shot in the dark. Street/Strip applications only. Just my thoughts here, but usually they're in the range of 1. and if it gets too hot it goes into hot mode and will keep the converter locked up. Using long tube stainless is great way to go for torque and longevity. This must be installed to a +12V source (as most brake light switches are). This input is used to unlock the torque converter when the brakes are applied. If you can tell me how,I will post the mod up here with fotos. Use in any transmission for preventative maintenance. all 2014 and prior gm pass. 6L80E Transmission HD Remanufactured Chevy Gm Six-speed Automatic 2WD Time commitments may vary as this is a custom built. 0 sec Sys Volts > 8. You re wire the harness and change the tune to run the 80e. It just "shifts" into it. A torque converter multiplication factor automatically lessens as the vehicle picks up speed so when the transmission is in first the overall ratio can change from the maximum of 11. Only problem is I tow a 6000 #ish load regulary on some hilly roads and I don't want the torque converter lock up to burn out. Users are able to adjust lock is based on road speed, unlock on the basis of throttle position, or lock based on gear the transmission is in. I have a question about my lockup torque converter in my 4L60E. Torque Converter Replacement Cost. Patience and experimentation is critical. The system uses a miniaturized version of the same control software and electronics as the COMPUSHIFT Sport. Even tho the DW will not like it, I'm getting headers, probably $400 shorties from Summit. This lets the torque converter lock in "gear" or unlock out of "gear. i had him rebuild the tranny with commercial/heavy duty grade parts, a B&M shift kit and corvette servo. Art Carr does not believe in using a lock-up torque converter in any aftermarket-engineered, high-performance application. 4 lock is locked in all the time and auto is not so on dry pavement auto is reall never fully engaged while lock allways is, all it take is front and rear tires to spin at slightly different rates and u have damage done.