lq4 wth 243 heads

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01-30-2012, 12:06 PM

sickdime

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lq4 wth 243 heads

doin some reasearch before i build.....i was thinkin lq4 wth 243 heads but i heard u had to mill them down .35-.50 because of cr is this true? an is it worth it?

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01-30-2012, 12:44 PM

TXSZ66AVLANCHE

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243 or 799 heads stock and unmilled have more CR than stock 317's

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01-30-2012, 01:18 PM

Mangled03gmc

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Yah, you might have been reading that you have to mill the 317's to use on a 5.3 -4.8 5.7

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