You have two alternatives on this one to make it work properly. FT/LB. In 2006, with the introduction of the landmark and innovative upstart, the 6L80 6-speed transmission, the 4L80 began to be replaced in several applications, which was, doubtless, GM engineers' ultimate intention. seal your new gasket … amzn_assoc_ad_mode = "search";
Even if these transmissions look pretty much the same on the pictures, there are a lot of things that are different between these transmissions. There is a big difference when it comes to the electronics of these transmissions. as well as the Hummer H1. A portion of the PCM's strategy is shift stabilization, which reduces hunting. I think I have covered the most important parts when it comes to the difference and the swapping between the 4l60e and the 4l80e transmissions. 4L80E Transmission. LT). Sometimes, the car models come with both 4L60e and 4l80e from the manufacturer and in these situations, you have to bear this in mind. When compared to the popular GM 4L60E transmission, the GM 4L80E is better suited to handle the high torque levels found in today’s street performance and race vehicles. m) of torque. Remember that these are the main differences and you can find other small differences if you carry out more in-depth research. This is both a return to and a departure from previous automotive control systems in the industry in that earlier electronic transmissions used a separate control module, later to be integrated into the Engine Control Modules which were thus termed Powertrain Control Modules. 4L80E Performance Specs The 4L80E is a manual transmission that has a maximum engine input torque of 440 lb-ft and is capable of providing an output torque of up to 885 lb-ft. To ensure the new TCI ® Flexplate was equally as strong as the transmission, the TCI ® design engineers made them 0.067-inch thicker than the stock flexplate from precision-ground A36 steel plate to deliver years of reliable service. vehicle weights. Because the transmission requires a speed signal for shift control, conversion installers should be aware of their different configurations. It's impossible to cover the 4L80E without discussing the great, , from which it was directly developed. The rear tailhousing bolt pattern remained the same, but its indexing bore diameter was changed. and it can handle a total gross vehicle weight of 8,600 lb, which makes it a great transmission for LS swaps with no modification needed whatsoever. However, with its 26-1/4" length, it is a longer transmission and is not compatible with short-wheelbase Jeeps such as the CJ5 in any scenario, or CJ7's if they have a lot of suspension lift. The PCM can command the engine to momentarily drop power during a shift if there's a possibility of clutch damage - a too-common problem in transmissions of other makes. If you are going to swap your transmission, try to get as many parts as possible from the 4l80e transmission that you are purchasing, like the torque converter, flex plate, dipstick etc. The 4L60E is differentiated into an early version and a late version. Please don't hesitate to … The Quick Ship 4L80E Transmission ships quick and includes a 4L80E torque converter, free 3 year warranty I created this blog because I was tired of finding false information on the web while looking for repair information. and can weight up to ~268 lbs. These numbers can differ a lot and you will get a lot of different answers about how much these can handle. The HydraMatic can be adapted to the popular Jeep transfer cases, including the: Essentially all factory GM 4wd applications available with an OEM configured 4L80 have adapters and transfer cases that are prohibitively long for a Jeep, and transfer cases whose sizes and gearing fall short of desirable for most Jeep applications. The 4L80e is much larger and heavier than the 4L60E. This is a BIG job. Although this transmission is certainly not in production as wi… This transmission makes an excellent conversion transmission due to its adaptability into most Jeeps longer than CJ5s. From 4L80E, the 4 indicates that the transmission has 4 gears. Here are the things you have to consider: Because of the larger size of the 4L80e transmission, you may have to modify the transmission on the car that you are going to swap it to. -. It has better power flow for big power applications, much more clutch capacity and apply area than the 4L60E. 4L80E Transmission Identification. GM used as many TH400 parts and designs as possible in the 4L80E, but the added overdrive gear would require an extra gearset and slightly longer (~1-1/2") case. There is a big difference when it comes to the wirings and sensors for the transmissions. Both 2wd and 4wd versions of the 4L80 can be used equally well, and there are no inherent advantages to either one once you have installed our adapter assembly. Unlike the later 4L60E transmission, the 4L80E did not feature a removable bellhousing, but an integrated bellhousing with only the Chevrolet 90 degree engine bolt pattern being available. 4L80E Transmission Specs: Dimensions (inches) A: B: C: TH400: 28-3/4: 27-1/4: 2-1/2: 4L80E: 32: 30-1/2: 4-3/8: These dimensions are for a typical 4L80E but … 71. The transmission also received an improved Park/Neutral safety switch and improved transmission line pressure solenoid. The TH400 was so enduring at GM and other marques, that it was actually the last hold-out of the old-school automatics without a lock-up torque converter or overdrive. Identification of the 4L80E is pretty easy. The replacement began in 1996 but was not fully phased in until 1998. m) of torque. This is a very straight forward installation in most cases. In 2006, GM superceded Dexron III as the recommended fill with Dexron VI, which is backwards compatible with the earlier versions. Or, the controller can be an external GM or aftermarket unit designed for earlier engines. Because of the expanding success of the. It should be noted here that Gen IV style 4L80's do not mix and match well, as they have an integrated Transmission Control Module and require a CAN bus network signal to an appropriately matched engine combination. In fact the input torque rating is 440 lb. For the purposes of some adaptations, this omitted sensor and its internal reluctor ring may need to be installed by a transmission building professional for proper operation. light duty trucks for 1991. The 4L80 features ratios in each gear as follows: First: 2.48, Second: 1.48, Third: 1.00, Fourth: 0.75, Reverse: 2.07. 4L80E/4L85E Torque Converter Family: Torque Converter Remanufacturing Standards. There are also differences when it comes to the sensors, mainly that the 4L80e has 2-speed sensors that are different than the sensor on the 4l60e. It’s a longitudinal transmission (that’s what the L in 6L80E stands for). Grade braking and clutch line pressure (for greater holding power) are additionally great features that are activated by Tow / Haul mode on the truck platforms. As to length, this transmission is 26-1/4" … It uses the Input Speed Sensor to monitor input speeds to compare against engine speed and output Shaft Sensor speed, using this data to adjust shift speeds under instantly detectable conditions. HD and HP versions available. Though not entirely without glitches, the 4L80E was essentially successful and the transmission continued to be improved throughout its production span, with incremental changes entering as available. amzn_assoc_default_search_phrase = "4l60e";
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