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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.



Can you provide specifics of the engine? Too vague to use as a datapoint...

452" Victor heads, bowl blend,VJ and guides corrected,10.8to1 comp, mid 250's/.640gross 108lsa 105 ICL,Indy modman intake(yuck), 2 edelbrock 600 carbs(MORE YUCK),2" hooker headers. It's getting more comp and cam as we type. The other restrictions will stay as they are not for me to change.