question on milling heads

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07-03-2010, 02:36 PM

cwalker2006

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question on milling heads

Have a set of 317s for my lq4. How much do I need to mill to get compression around 10-10.2:1cr? Bottom end is stock.

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07-03-2010, 08:27 PM

lethalperformance

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well there 9:5 stock so im guessing milled 40 not sure

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07-03-2010, 08:48 PM

Beatdown Z

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Quote:

Originally Posted by lethalperformance

well there 9:5 stock so im guessing milled 40 not sure

Yep, that should put him right around 10:1. Add some .040" Cometic gaskets and then you should have approx. 10.3:1. http://www.summitracing.com/parts/CGT-C5317-040/

Here's some gaskets that would bring your c/r even higher, like 10.6:1:
http://www.jegs.com/i/Cometic+Gasket...1-030/10002/-1

Last edited by Beatdown Z; 07-03-2010 at 08:58 PM.