Quote Originally Posted by 1gary View Post
Honestly my suggestion is no one will recognize the older style heads unless they see the effort on accessory brackets needed to mount things like the later yr alt,power steering pump because the early heads don't have the holes for that.I do suggest your going to be spending time explaining oh those are double hump heads and not have any of the performance to show for it.

Before you make that move on the heads,might I suggest the following.Your spending all this money for a stroker and then limiting it's output on a topic your going to have to explain to people.To compare them to the Vortec's is a bad example because those stock Vortec heads given how limited they are as well would not be a good choice.Either the Vortecs or the older heads are a bad match for the 383.We leaned alot since the first 383's where built and the how and why you see the difference in ET times from yrs ago.Bottom line is the head are counter productive in building a 383.

So that said,maybe you would be better off not building the 383 and rather build a 355 which isn't a good match either but alittle closer.

Oh I think it was Richard that posted once the formula of .5 X CU= the needed intake runner size.So for a 383 it would be .5 X 383 =190 CC's.Or in that range and if you wanted to tailor the torque output with a lower torque curve in abit smaller intake runner.If you check that out on line anywhere on the net,you would find how dead on that formula is.

I wanted to pass on to you that these things are not guess work.It is more over yrs of R & D in development in the SBC's.
C'mon Gary, the guy said clearly
I've already decided to put them on.
He's made the decision, right or wrong, and seems to understand the limitations. Sounds to me like a done deal, so why beat the drum?

Wannt77, if you're set on that combo I'd call the tech guys at Comp Cam, explain exactly what you've got, including your final compression ratio, and let them guide you to a cam selection. You're obviously not searching for that last foot pound or last couple of horses in this build. What's this engine going to be dropped into, and what's the rest of your driveline going to be?