Transmission tuning is key here guys. The 6L80 was used in trucks, particularly in the platform. Everything they do is geared towards a stock vehicle with light tires and crappy gearing. Now confirmed working for the 8L90 too! When it shifts from 1st to 2nd its got a really smooth shift and it puts a smile on your face. The transmission consists primarily of a four-element torque converter, an integral fluid pump and converter housing, a single and double planetary gear set, friction and mechanical clutch assemblies, and a hydraulic pressurization and control system.
The 6L90 has a beefier set of gears and many internal upgrades. If it's just annoying to you, your cheapest option is to pull the shifter in to M5 mode and run the grade in 5th. Offroad you will be fine with the stock 241J transfer case and whatever gear you choose. It began replacing the transmission in many vehicles starting in the 2006 model year. Performance Algorithm Braking Performance Algorithm Shifting is available on some applications. The 13 has 3:42's and I would give anything if it had 3:73's.
The torque converter acts as a fluid coupling to smoothly transmit power from the engine to the transmission. Silky smooth shifts and very generous overdrives allow for less gearing and better fuel mileage. I am going through the same thing. You have plenty of power now so lets use it. Nice job on the chart I also had been wondering about this. See the pictures below to help you tell if you have the right transmission. According to that chart at 60-70 you should stay around 2000- 2400 rpm's depending on tire heights.
The compound output gearset uses three sets of pinion gear pairs, with one set of pinions meshing with the sun gear and the other set with the ring gear. Electronic safeguards prevent over-revving should the wrong gear position be accidentally selected. Although it is not uncommon to have a transmission-control module that adapts to the specific transmission with which it is mated, and to also have programming that optimizes transmission performance characteristics according to a variety of vehicle inputs, the new Hydra-Matic six-speed automatic adds another level of adaptability. Modular construction also enables an easy plug-and-play approach to delivering features and hardware for specific vehicles. All applications feature adaptive shift controls.
Bishop I definitely recommend a look at these transmissions, you've got to have a look. While the basic aluminum housing for 6L80 transmissions can remain identical for a wide variety of applications, including front- and rear-mounting, car and truck applications, and rear- or four-wheel-drive applications, the case extensions and bell housings can be modified for nearly any longitudinal drivetrain vehicle. It consists primarily of a four-element torque converter, an integral fluid pump and converter housing, a single and double planetary gear set, friction and mechanical clutch assemblies, and a hydraulic pressurization and control system. Advanced Control System Advances in transmission control modules allow them to exist reliably inside the transmission, where temperatures remain fairly constant compared to a body-mounted module. Personal preference here guys, you want bark the tires and snap necks? It is not utilized in many vehicles.
There is one compound output gearset and one simple output gearset. Used transmissions, since there is no way to know how many miles are on them, may fail at any time. The additional cost may be higher than installing a reman or rebuilt transmission--not to mention the extra downtime. Structurally, the 8L90 is similar to the , except that it is made to handle more power and torque. Th e 6L80 features a generously deep first gear for an automatic, making for favorably powerful starts from a standing stop. Please to purchase a proper speedometer gear for your application or if you are unsure if your tail-housing will need to be reused.
But it won't be anywhere near calibrated for the big heavy Jeep, tires size or gear ratio that your running. If you pull a camper or boat, we will set it up for max towing. There is no leaking coming from the front seals, rear sears or oil pan. Certain vehicle specific tail-housings may not be available with this unit. This allows a greater degree of smoothness at lower vehicle speeds. Be sure to order the correct input adapter to match your trans. The 6L90 flexibilty extends to the clutches where the 6L90 has one more clutch plate than the 6L80 in each clutch for heavy duty applications.
This allows the transmission to be tailored for optimal fuel economy while delivering excellent acceleration traits. I know if I had 4. The 8L90E is an 8 speed automatic transmission developed by General Motors and introduced for the 2015 Model year. Got all the little things hooked up and this weekend the tranny goes in. It is a heavy-duty version of the 6L80 six-speed automatic, with a strengthened input gearset which has two additional pinion gears for six total, and a strengthened output gearset, that uses wider gears than the 6L80.