Recent content by zcherry

The only reason I mention the computer is to get the right mapping. After looking at some of the other posts on the subject it looks like the cams the same. the rewire doesn't bother me...put factory AC in and reprogrammed the computer once. That said, I'll keep the stock harness and computer.

I have a 89 4.0L with almost 250K and have been thinking of updating to an HO 4.0L. I have access to a 93 motor and ECM. Will I have to change the ECM and will it plug into my wiring harness? Some have suggested putting my intake and exhaust manifolds on it and keep my ECM. I'm lookng for a...