Sounds logical. -Staten Island Frank- In a message dated 10/23/2009 9:24:27 A.M. Eastern Daylight Time, jryan@xxxxxxxxxxxx writes: Well, in theory, I have a '90 Caprice police car engine and fuel system. The difference is that I have a hotter-than-stock camshaft. I'll advance the timing when I get home. It has all the symptoms of not having enough advance. I'll add between 4 and 6 degrees and I'd be surprised if it doesn't improve dramatically. Remember, with the too-small injectors it would have been lean and prone to pinging, so the timing would be retarded to keep it from pinging.