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It's not a small block. Does have what I think are bigger than average heads and a smaller cam. We were doing some factory iron head tests and had the Indy EZ heads in the shelf.

440 .030 over, old TRW 6-pack pistons w/ stock rods, 10.5:1 compression, EZ Max Wedge heads flowing 360 cfm @ .700", Edelbrock Victor intake, 850 Mighty Demon carburetor, XE285HL camshaft 241/247 @ .050, .545/.545, 1.6 rockers.

Start dyno pull at 3,500rpm. 500 lb-ft from 3,500-6,000 rpm. Peak torque 543 @ 5,200 rpm and peak HP of 595 @ 6,400 rpm. Don't know if that's good or bad, just is what it is. Never pulled it lower in the rpm range with this combination so can't speak on that.

So your posted combo uses approx 262 cfm from those heads? That's the kind of combo that would be a bummer to me. Heads that are capable of real output on a street hp build. We have a NSS car 3730lbs 452 cid that makes 650hp with much weaker heads,pump gas,small roller cam,crappy intake,etc and I am pissed that it's such a turd. Match the parts and good things happen. I'm not knocking you as I'm sure you see limiting parts to that build.



Sure, I see. Was just attempting to show from my experience a big head/small cam build. The 451 build with the Edelbrock RPM heads pulled the same 500 lb-ft @ 3500 rpm but was still carrying 565 lb-ft @ 7200 rpm. Like you say, just a better match to the parts.

Last edited by LaRoy Engines; 01/16/15 12:19 PM.