383 Stroker?

jamesdart said
around 2000 i wanted to build my 383 and wound up using the 440 steel crank and resized ly rods. 30 over pitons had to be custom made at that time. it is a 431, 9.2:1 compression stock rebuilt 906 heads torker intake 1 3/4" headers 3" exhaust 9.5" converter 3.73s and it has gone a best of 11.81. i just made some changes and am curious how its going to run. stealth heads rpm intake 2" headers and a new exhaust. i dont want to put a bar in this car so ill gladly slow it down with gear and carb changes and make it more streetable while making more power.

IMO,
If you were 9.2:1 CR with the Cast Iron Heads on pump gas ?
to remain "comparable" for peak burn Pressures,
you will want around 10.2:1 CR for the ALUMINUM Stealth Heads on pump gas, 1 full point higher,
due to,
the Aluminum Heads greater dissipation of Combustion Heat.
Think of it as maintaining "Apples to Apples" for power parameters.

Once the above is attained, the better breathing Stealths & Intake/Exhaust combo should produce more power as long as the camshaft profile is conduscive to utilizing the greater Flow potential.