papa_smurf49319 Posted May 30, 2007 Report Posted May 30, 2007 Im 853 ft above sea level run 93 octane, how much should i shave my stock head? And will it be noticible, make it heat up any faster, or any other downfalls. Quote
Bansh-eman Posted May 30, 2007 Report Posted May 30, 2007 you can get away with 20 thousandths most of the time. but the only 100% way to know for sure is a compression test. Quote
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