I want to build a iron headed 440 using either 915s or 906s and I will be using the Edlebrock performer rpm manifold old school solid cam using isky adjustable rockers. I want the build to be around 500-550 hp with only mild porting since I already know the cost vs aluminum heads so could you guys help me with the specifics what or how you would go about this kind of build? Thanxs
Step by step, using a bunch of old parts we had laying around, to take a 440 using the old replacement 6-pack pistons, 346 iron heads, 8.9:1 compression with an RPM manifold making 404 HP and 483 torque to 524 HP and 509 TQ. Then to 650 HP with EZ heads using the same shortblock and an old roller cam ground in 1968.
440 from 404 HP to 650 HP 
