Mild 383 build

273,
This is for you. I know from your posts that you are quite knowledgeable. Not wasting time with Turk, he doesn't know how an air bleed works.
Last one, I don't agree with you and you don't seem like your gonna agree with us, lets just focus on the OP build, he's not stroking it anyways.
You are confusing force with pressure [ loading ]. Look at the formula in post #112. Pressure= force divided by area [ not multiplied ].
In post #91, you said energy can neither be created or destroyed. 100% correct
In post #114, you used an example of 1000 lbs of force in the com chamber. Let's work with that.
Combustion creates pressure, psi, my eg.. Was a 1000 psi (the psi of a average engine, full throttle) not a 1000 lbs of force, so the force from the piston would be F = P x A, larger piston more area for pressure to be applied = greater force to the rod.