BIG BLOCK FORD for Std Valve Location CYLINDER HEADS (FoMoCo, Edelbrock, TFS, Blue Thunder, Etc.) 521cid 4.390 x 1.350CH, 4.300stroke,6.800rod,0.990pin,-38cc,506g,9.3CR, 4032.
SMALL BLOCK CHEVY HIGH OUTPUT 2bbl 22?/23? FLAT TOP Gasported / Asymmetrical Valve Pockets PowerPak Plus 358cid 4.035 x 1.250CH, 3.500stroke,6.000rod,0.927pin,- 4.1cc,395g,10.6CR, 4032.