Thanks for the info on the piston cc's. The combo is going to be for a high compression vp-44 powered 24v with a 6.7 crank.The goal will be super high efficiency and low rpm power.
The 6.7 crank gives you .16" more stroke so you'd be shaving .08" off your crowns. Any speculation on CR using '03/'04 pistons? I've thought about doing something similar after reading about the VP rig Moster Pump Mike set up around 21:1 CR.