Calculation for Compression Ratio?
Lets say I have a
347 CI motor
Stock Pistons
Stock Head gaskets
PRC LS6 CNC Ported Heads - not for on chamber size but they have never been milled
So how do I get a comp ratio of 9.5??
What would
347 CI motor
Stock Pistons
Patrio Stage 2 heads with 52mm chamber
Head gasket not sure which to use.
Also how does the calculation work?

