Milling 317's

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10-19-2009, 06:31 PM

JDC

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Milling 317's

Whats the most anybody has milled a set of 317 heads. My son wants to put a set on his 4.8 with out losing the stock compression ratio. Ive figured you need almost 070. off them. what do you guys think.

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10-19-2009, 06:39 PM

dirt track racer 81

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thats alot to mill off. milling them .070 will get you around a 60cc chamber.. but personally i get the 243s and mill them .030-.040

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