Here you go, Piston area and force.
More piston area does not automatically mean more force on the rod!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
For one really were talking an average psi through out the power stroke, it's not a static amount it's forever changing evolving. Your assumption is the 383 B will have less overall average psi over a 383 RB or 408 B vs 408 LA etc.., you have offered zero proof for your position.
The overall surface area for both is basically the same at bdc and at tdc the larger bores full chamber, head gasket, cylinder wall, piston area etc.. Does have more surface area but for a small fraction of the power stroke. The larger piston has less bore surface area (cylinder wall) in the exact opposite percentage ratio. The smaller bore has a longer stroke so the piston moves away from tdc faster at same rpm to cover a greater distance which doesn't take far down the bore for the smaller piston to have more total area but even though the smaller bore will have more total area the larger piston will have more percentage of area for the part that the psi actually moves the piston.
1. Were talking average psi.
2. The larger bore has more surface area only at tdc, shortly after the smaller bore has more surface area and for a greater percentage of the power stroke (the rest of the power stroke) .
3. With the larger bores overall total surface area a higher percentage is the piston area compared to the smaller bore, the part the actually applies force to the crank to be multiplied.
You got to prove that the larger bore for some reason can't have more average psi applied to the piston.
Just assuming and implying it doesn't make so.