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most you can mill GM heads?

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Old 03-13-2006, 05:16 PM
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Default most you can mill GM heads?
What is a safe number you can mill the heads without having intake manifold fitment issues?
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Old 03-13-2006, 05:44 PM
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Originally Posted by Greg Fell
What is a safe number you can mill the heads without having intake manifold fitment issues?
I did .040 no problem. Ive heard you can go up to .050, but watch you P to V clearance if you dont have valve reliefs.
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