BRAND NEW 317 heads for sale

Brand new in box set of 317 heads for sale. $400 + shipping.

sorry but which ones are these?

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Originally Posted by flynn78us

sorry but which ones are these?

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They are the 72/70cc heads. They come off a 6.0, and flow the same as the 243/799 heads, but just have bigger chamber. Good for going boost.

what compression ratio would they yield on a 5.3?

low. Im thinking like 8.5-8.8 CR. Good for a turbo. But would be a gutless pig for NA.

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Originally Posted by ff_jeff

low. Im thinking like 8.5-8.8 CR. Good for a turbo. But would be a gutless pig for NA.

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Yeah thats what I thought, thanks for the info.

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Originally Posted by ff_jeff

low. Im thinking like 8.5-8.8 CR. Good for a turbo. But would be a gutless pig for NA.

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Yup, was gonna put them on my LS6 but didn't want to sacrifice the HP loss. Looking for some 243's.:hyper2:

SOLD! They're going on my engine, new plans, see my sig. :D

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Originally Posted by 00shortbox

SOLD! They're going on my engine, new plans, see my sig. :D

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Awesome man. Good luck with the build!

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Originally Posted by 00shortbox

SOLD! They're going on my engine, new plans, see my sig. :D

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So you plan on runnin 2 sets of 317s! Lol