K Will try ...thanx
Type: Posts; User: Chevelle454
K Will try ...thanx
I have a 1989 GMC K3500 with a 454 and a TH400 with a 1227747 ecm with the soldered in chip. I want to put a 4L80e in the truck. Was wondering if anyone knows if I can use the ecm out of the 1991 GMC...
Just though I had better learn to tune something. New to it all. No one in northern Alberta seems to do any tuning. I am working on a 89 GMC dually resto. It has a 454 tbi with th400 and half moon...