i have a 91 crewcab and want to get rid of the 454 for a 12 valve, i wanted to know if i can leave the 4l80e along with the transfer case and just swap out the motors , i have tryed researching this and have found mixed reviews on whats best, thanks for any and all info that pops up here
CK5
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91 chevy with 95 cummins conversion
- Thread starter 91v3500
- Start date
It's doable but be prepared to shell out the money for adapters and a stand alone controller to run the 4L80. Not to mention the motor mounts and crossmember
What would have to be done to the crossmember and i should only need one adapter for the engine to tranny, also if anyone sees this and knows of some sites or places in new york that specialize in conversions would be greatly appreciated as i have never done this before but want to do this on my own if possible
You'll need the adapter plate for the GM auto as well as a flex plate
4btswaps.com
The front axle is the big hangup there, completely different suspensions between the two trucks. You wouldn't be able to use the GM axle with the OE NP241DHD transfer case as the driveshaft is on the opposite side.
What tranny does the donor rig have?
Check out usshift.com for a controller for the 4l80e
Im pretty sure its the 47rh
