Thread: I will build a 1967 428 ci HO YK Code Pontiac with the help of a machine shop
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  #19  
Old 02-11-2024, 06:52 PM
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242177P 242177P is offline
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Join Date: Oct 2004
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Originally Posted by Gach View Post
You don’t comprehend too well do you I said more cam and more compression.
Did mike's head mechanic mill the 067 heads?
If it's detonating with more cam, it's user error.