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Author Topic:   vaccuum
posted May 20, 2004 10:38 AM
I am running a 400 stock exhaust and quadrajet carb. I put a new cam in it designed to pull 18 inches @ 800 RPM and it is only pulling between 15-16 inches i have adjusted the carb. doesn't seem to help i can screw the air/fuel jets all the way in and the motor doesn't bog down or anything when adjusting it doesn't bring the vaccuum up at all I thought maybe a vaccuum leak but have put new carb. base gaskets on it doesn't change have 1.6 rockers on intake 1.5 on exhaust please help would like to race this weekend i have been fighting it for 2 weeks thanks.

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