Thread: My latest custom project- 4T80E swap in our 1997 Grand Prix UPDATE- Its on the road!

Subd

This transmission is from a 96 Aurora and has the 3.48 ratio. When I build a replacement it will get the 3.11 ratio.

James- the tune issues have been sorted out so that is not longer an obstacle . I will be using a 98 GP harness and pcm for this project. Trans type alone doesn't seem to get the whole job done so there will be a lot of toying with this but solenoid state is covered, and hey if I can get a 4L60E to work with an L67 file this will be a cake walk lol.