Originally Posted by Däs Schmoo
Ahhh, you are right. I forgot that the LS block has a smaller deck height than the GSR.
The C-speedracing compression calculator sucks.
h:
it has the same deck height, it's just that the compression height on the pistons are higher and the that along with the extra stroke pushes it into the head, it makes the headgasket volume .5665cc, as you can tell theres it's past the first two layers and almost in the head. c-speeds calculator has been known to go awry when the pistons go past the deck.
:edit:
the deck hiehgt is different, but what i meant to say is that you already took care of that by saying the stoke is different.