Announcement

Collapse
No announcement yet.

Transmission options

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • #61
    I have been following this and other threads, pertaining to transmission/adapter options for the Cummins 2.8L diesel engine. Has anyone looked into the GM 8L90e transmission? Just by the model, it may be a good 'fit', if the 6L80e adapter will work with it (?). Only downside may be that it only comes in a 2WD version (unknown). In my case, that's what I'm looking for anyway - a 2WD / RWD option for my project... Thoughts? Has anyone looked into the GM 8L90e transmission?

    Comment


    • #62
      I thought I'd heard of an 8 speed used with one of these, but it may have been one of the Dodge transmissions.

      This engine does have a nice RPM range where a lot of 4 speed and above transmissions, gearing wise would work well. I'm running an AX-15 and I really like where I can shift to fall into the next gear/RPM range. I still need to change out my axle ratios though to meet my "best" gearing, but my change is very slight from 3.07s to 3.55s, with 33" tires. I figure if I want to tow more , I can put on my 31s or smaller if I need a bit more, but I've pulled over 3k lbs with my current setup and it's been pretty good. Take off with a slight incline was noticeable though. Until the turbo kicked in the load seemed too heavy. That's not a typical trailer I'd pull though, but my truck batteries died and I needed to haul some junk.

      Comment


      • #63
        Another adapter option for transmissions - http://www.zerogravityperformance.co...transmissions/

        Comment


        • #64
          I have a 95 Hardbody with an FS5R30A 5 speed transmission and need to know if the Cummins will bolt up or there is an available adaptor.

          I am completely restoring my 95 Hardbody XE V6 4X4 and am very interested in the Cummins, if I can make it work.

          Comment


          • #65
            R150 isn’t hard. It does require 2 adapters or possibly quick draw might have a bellhousing now but not sure. Running the 2 adapters is no issue. It’s an adapter and a bellhousing. Advance adapters is the best choice to get the required parts.

            Comment


            • #66
              New to the thread and forum,

              I have read most of the posts and didn’t notice much other than GM tranny adapters. I was wondering if anyone had information on adapters from the R2.8 to a 42RLE (stock tranny in my 07 Jeep Wrangler) any advice or websites to further help out would be great. Thank you!

              Comment


              • #67
                I believe the 42RLE is an issue because there's no controller support for the transmission. I've never messed with programming much, especially a transmission, but I've repeatedly read through swaps where they've tried to use it and simply have to give it up for another transmission.

                Comment


                • #68
                  Hi everyone,

                  I'm new to the forum. I'm wanting to build a cj7 with the R2.8 on 33s and I would prefer a 6-speed manual because I plan on driving the jeep daily but also use the jeep to pull a small trailer for kayaks and camping gear. I was looking at different 6-speed and came across the Tremec Magnum close ratio 6-speed. Has anyone heard good or bad about this transmission for the R2.8 Cummins? One thing I really liked about the transmission is that it has 3 different placements that you can set it up to shift from. I was playing around with the gear calculator and with 3.73 on 33s with different speed and it seems to look like a good setup. The link is info about the t56.
                  https://americanpowertrain.com/shop/...magnum-for-gm/

                  Comment


                  • #69
                    Has anybody heard of using a Getrag g56 with the r2.8?

                    Comment


                    • #70
                      Originally posted by CjCummins View Post
                      Hi everyone,

                      I'm new to the forum. I'm wanting to build a cj7 with the R2.8 on 33s and I would prefer a 6-speed manual because I plan on driving the jeep daily but also use the jeep to pull a small trailer for kayaks and camping gear. I was looking at different 6-speed and came across the Tremec Magnum close ratio 6-speed. Has anyone heard good or bad about this transmission for the R2.8 Cummins? One thing I really liked about the transmission is that it has 3 different placements that you can set it up to shift from. I was playing around with the gear calculator and with 3.73 on 33s with different speed and it seems to look like a good setup. The link is info about the t56.
                      https://americanpowertrain.com/shop/...magnum-for-gm/
                      I didn't see a 1st gear ratio that I'd want to do much towing with for the transmission. As far as compatibility, you could probably get a custom adapter pretty easily. I've towed some with my Jeep (most was about 3k lbs, but fairly regularly I'll tow about 1,500 lbs) and my first gear is 3.83 x 3.07 and I'm running 33s. It's ok, but I would really like more gear. I've looked into the 4.3 gear change in my transmission, but it seems like a pain, so I'm going to just go with an Atlas 4-speed eventually. I've got some other stuff I've got to do first before I get the Atlas ie gear ratio swap to 3.55.

                      In stock form the R2.8 seems to be pretty nice with the AX-15. I wish the Ax-15 was a bit deeper in 1st gear, but the steps to go to 4.3 or 5.15 aren't something I want to do. Of course you could also run that transmission and get an Atlas and run 2lo or 2 lo lo for some really easy towing (run through your gears in 2lo then shift to 2 hi and go through a bunch more gears), but then I wouldn't probably look at anything but the Atlas 4 or something similar so you can get all the useful ratios.

                      Comment

                      Working...
                      X