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Compression ratio question???

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Old 06-11-2013, 02:21 PM
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Default Compression ratio question???

What compression would have with a LQ9 with 243's heads? Would have problems with flat pistons and LS3 heads?, I had observed some LS3 pistons with valves relief?
Old 06-11-2013, 04:49 PM
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Originally Posted by Mike Cordero
What compression would have with a LQ9 with 243's heads?
Pretty much the same as a stock LS2.

Originally Posted by Mike Cordero
Would have problems with flat pistons and LS3 heads?, I had observed some LS3 pistons with valves relief?
Depends on the cam specs. Stay conservative with the cam specs and you should be fine.
Old 06-11-2013, 07:29 PM
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Default Cr????

Originally Posted by Know_It_All
Pretty much the same as a stock LS2.



Depends on the cam specs. Stay conservative with the cam specs and you should be fine.
Thanks; someone else?
Old 06-13-2013, 11:39 AM
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What compression would have with a LQ9 with 243's heads?
Pretty much the same as a stock LS2.

Would have problems with flat pistons and LS3 heads?, I had observed some LS3 pistons with valves relief?
Depends on the cam specs. Stay conservative with the cam specs and you should be fine.
Old 06-15-2013, 11:35 PM
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Ls3's have flat top pistons, L99's have the -2cc valve reliefs due to VVT.

Here's a link to help out. I believe 243's are 64cc's

http://mobile.dudamobile.com/site/wa...ng.com%2F#2707



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