I wanted to say a few more things about dyno numbers.
I'm in no way insinuating that guys doctor their numbers. What I am saying is that different brands of dynos yield different results. Period.
I've seen engines from a lot of well-known builders and I can attest that numbers vary. Greatly.
I wasn't cutting your engine combination Rod. What I was trying to say was, your engine, which is the typical 482 inch combo, with Edelbrock heads, Performer RPM intake, hydraulic roller, etc., just won't make 600 hp here. I have built numerous 482's just like that, even using cylinder heads and camshafts from other well-known builders. Again, not insinuating that people doctor numbers, but stating the fact that different dynos yield different results.
Does it make any logical sense that an engine with cylinder heads that flow almost 350 cfm on the intake side and over 260 cfm on the exhaust side, along with a camshaft that probably has over 20 degrees more duration, along with a ported single plane intake *only* makes 23 hp more than your combination? Really?
Also, if I were that worried about "selling numbers", I would go else-where to dyno my junk. But I would rather have a 400 hp engine that outruns all the 500 hp engines.
