I know that the LS and GSR blocks are nearly identical in height, but have heard there is a slight difference- From my research I gain that the piston to deck height would be .022

With a stock GSR or LS it is at .03 correct?

So using C speeds calculator, I would have 9.9 compression using:
81mm bore
89mm stroke
GSR head
LS pistons
and .022 piston to deck height-


Am I doing my calculations correct? Is the piston to deck height .022?


Thanks!

 

It should be 0.035 with LS pistons... The GSR/Type R blocks are taller... Hence the greater piston to deck clearance....

 

Thanks! good info- anyone confirm this?