Conflicted regarding powertrain direction.
I have a NV3500 from a 1995 GMC Sierra 4WD (with the transfer case) but adaption to 2WD is a challenge. Considering using the NV3500 with an adapter to the original mid-drive shaft (torque tube) but requires parts and machining to end up with a two-piece drive shaft that may not be ideal. Locating a manual transmission with OD for a 2WD truck application appears to be challenging and possibly expensive. Clutch actuation from the pedal to the throw out bearing will also be challenging.
Automatic transmissions seem to be readily available but newer versions are electronic which raises the question of doing a complete LS engine and transmission installation rather than using the 1991 350/383 engine option. If I go the LS route, I could purchase either an engine/transmission combination with the wiring and ECUs but programing the ECUs for the existing rear axle ratio etc. would require something I don’t know how to do. I could also consider purchasing a wrecked truck to obtain the required LS engine/transmission parts and possibly some additional items such as rear axle, seats, steering column, etc.
Anyone out there that has done an LS swap with electronic automatic transmission that could provide insight regarding fit issues and ECU programming issues would be appreciated.
