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Old 05-11-2005, 06:07 PM
403pontiac 403pontiac is offline
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how far can u bore a 403 olds engine

Hey my name is carl i need to know how far can i bore a 403 over with out overheating.if u got any info on how i can set this motor to high performance and what i will need to buy plase let me know.I atleast want to run a low 10 or 9. please tell me everything including what i need to do to the gear in the axle
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