Did I calculate my compression right? The engine is a 6.0L LQ4 stock pistons L92 heads with a 65cc-camber volume. I suck at math I should have stayed in school, I came up with 9.87:1 is this correct?

Bore 4.0
Stroke 3.62
Head Chamber volume 65cc
Pistons are dished (relief pocket) I used 8cc for this
Head gasket .040 Cometic
Deck height 9.240
My pistons do stick up .009 above the deck surface @ TDC
I used 1cc for the crevice volume

 

I come up w/ 10.3924:1

 

I got 10.39 as well.

 

Thanks Junk..... I think I'II take a Math class this summer

 

same thing im doin..only i got 62 cc 243 heads

 

Calculation:

Assumption: 4.039" bore head gasket