have you looked at Wallace racing site? They have a Piston Inertia calculator, and a piston speed calc also..
http://www.wallaceracing.com/Calculators.htm

[color:"red"]65 Hemi Belvedere coming soon [/color]
[color:"#00FF00"]557" Indy engine 1.07 60ft 144mph in the 8th 2100 lbs package [/color]