Assuming the Stealth heads measure the advertised 80cc, the block is the stock 10.725†height, and you use a .040†gasket(and that the stroke is actually 3.750†and the rods are actually 6.768â€)....... the CR would end up at around 10.8:1.
Swapping only the pistons to Icon IC822’s would drop the CR to about 10.2.
With some head milling and a thinner gasket you could get back to that 10.8 range, only you’d have much lighter pistons and effective quench....... and proper valve pockets.
