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Sep 23, 2008 | 10:29 PM

05gmc

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Launching!

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quick question i have a 01 LQ4 and had the 317 heads shaved .030 what might the compression be i know stock its like 9.5:1 and useing stock headset

Sep 24, 2008 | 12:39 AM

05RST2NV

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From: Brandon, MS

Quote:

Originally Posted by 05gmc

quick question i have a 01 LQ4 and had the 317 heads shaved .030 what might the compression be i know stock its like 9.5:1 and useing stock headset

Normally .030 is good for 1 full point of compression. So you should be around 10.5:1 now.

Sep 24, 2008 | 11:17 AM

InchUp

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Ask the machine shop who did the milling. We cannot tell you because the more you mill the more the variable changes so ask the machine shop.

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