[skid2964]

I made mention of this setup in another post and was asked to supply more info here.

I bought my 79 Jeep Cherokee earlier this year and found the 401 in it needed a rebuild, the more I researched the AMC, the more I hated sinking any money into it. I used to race Pontiacs years ago so I decided a 455 would be perfect! 4x4's (especially 5000lb ones) need lots a low end torque!

The swap is fairly easy as far as the drivetrain goes. The Jeeps with the Quadratrac 4 wheel drive system used an AMC bolt patterned GM Turbo 400 transmission, so I acquired a Buick-Olds_Pontiac bolt patterned TH400 and will have the original output shaft installed in it to mate up to the Quadratrac transfer case.

The motor mounts, I thought would require a big fabrication job, but I have found this is not the case. I mocked up the empty 455 block and empty TH400 case in my Jeep this past weekend and found the motor mounts are VERY close! (see pics). This makes things very easy! All I need is some flat adapter plates. ( I may market the adapter plates ).

The only things left will be the AC compressor and brake booster. "vintageair.com" makes brackets for a Pontiac to mount a new style compressor, but I think I will fabricate mounts for my original York compressor. The brake booster looks like it will interfere with the driver's side valve cover, two options; use GM hydroboost or get a reduced diameter brake booster from summit racing, I think I will do the latter. (actually 3 options, a 2 inch body lift will make it clear also)