Ive put a.455 lift holley cam in a 350 chevy, have been setting timing by vacuum gauge, ie highest reading then back off 1 in. Doing this believing distributor got installed wrong. Readingis 15 in. Have no pinging on accl. Am I doing harm. Plugs do look a little hot. Motor is a 1990 gm crate 4bolt main
have the same problem?
Monday, November 22nd, 2010 AT 3:55 PM