Thread: Engine swap / Trans swap 2001 gtp v. compatible years

Originally Posted by Fivefingerdeathpunch

Wiring harness should be super similar, not much will be different if anything. Depends on if the car has cali emissions or not.

You will need a 99+ throttle body and MAF sensor through if you are using the 2001 computer.

The motor will swap over fine.

Any transmission that is a 4T65e HD from 1997-2002 is a direct swap. 2003 was the change over with valve body and internal controls.

Thank you for the reply. I did have a 2002 gtp tranny sourced but the salvage shop selling it swore up and down to me that the gearing was different and that it wouldn't work.