Thread: stock car power loss

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i rebuilt a chevy 350 motor. i put in a new cam, anti pumpp up lifters. 1.6 ratio rockers. and had the heads redone with all stainless valves and they were milled down. my car this year which is the same car as last year only with a fresh motor is slower than last year and last year i had stock heads, stock lifters stock rockers. the only other thing i did was advanced my cam 4 degrees to get my power a little quicker. please help

If you stepped up on the cam timing (delaying the intake closing point) without changing the static compression ratio, that would explain it. Happens all the time when builders don't understand the relationship between scr and the closing point. Just an educated guess.

[QUOTE=8ballracer]i rebuilt a chevy 350 motor. i put in a new cam, anti pumpp up lifters. 1.6 ratio rockers. and had the heads redone with all stainless valves and they were milled down. my car this year which is the same car as last year only with a fresh motor is slower than last year and last year i had stock heads, stock lifters stock rockers. the only other thing i did was advanced my cam 4 degrees to get my power a little quicker. please help[/QUOTE All you did was rob Peter to pay Paul.

Before you start making charges to your engine,do you know what rpm you are already spinning before you go wide open to bring it out of the turn? You may be making lots more power,but just throwing it away on wheelspin. Are your tire temps still about the same,especially the right rear?Have you rejetted the carb to go with the cam and head work? You've got a lot more homework to do to dial that engine setup to your track. Hank