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How much to mill LS6 heads to get 59cc combustion chambers

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Old 02-28-2008, 04:19 PM
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Default How much to mill LS6 heads to get 59cc combustion chambers

I have an LQ4 block and want to get LS6 heads, but I want to raise compression due to the dished pistons... How much would I have to mill 243 heads to get 59cc or 10.9 compression


Also I am looking for 243 heads and LS6 intake
Thanks, Jon
Old 02-28-2008, 05:03 PM
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it's .006 per CC roughly. 243's are 65cc stock (1cc smaller than the 66cc 241's), so 65-59= 6, 6x.006= .036

About 36 thousanths should get you there. Have the machinist check of course.
Old 03-07-2008, 12:33 PM
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Thanks for the quick response!
Old 03-31-2013, 01:35 PM
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Originally Posted by Asmodeus
it's .006 per CC roughly. 243's are 65cc stock (1cc smaller than the 66cc 241's), so 65-59= 6, 6x.006= .036

About 36 thousanths should get you there. Have the machinist check of course.
can you do that with an gasket? my ls6 heads are check mill by tea to 64 cc. can a gasket take me to 11.1 or more safe?



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