new to the site

[pickup man]

Which ECM are you thinking about learning to program?

dave w

I am looking at the gm 122747 in my 95 z-71. I bought a rebuilt 5.7l engine built for a drag car and I was told it had a mild cam, not much more than a towing cam. So I don't know muck about the motor except 4 angle valve job,flat top pistons and the heads were opened up. The problem I am having is ruff Idle not alot of power for what it should be, and not to sure where to put the timming. I havent put to much time into this but I am looking to start to get it all fixed. and help would be great. From what I have read my map sensor is no getting any vacume at Idle due to the cam.