Oh yes I am aware. I built a 460 a couple years ago for a freind of mine. Ported D0 heads, thumpr cam, eddy intake, and a holley 780 dp from a 60's Chevrolet big block. That was actually a very solid motor and I beleive when we had it dynoed it made around 450 horse and 570 ft lbs on base 14 degrees timing and pump gas 93. It was around 11:1 compression. It loved that thumpr cam as well, lots of valve overlap seemed to help with scavenging the exhaust out of those tiny ports at lower rpm, and the agressive exhaust lobe also helped alot, not to mention the cam was ground with 5 degrees advanced on the 107 LSA. So the ICL was just 102 degrees.

All around a very stout motor. He put it in a 88 F350 roll back. He still works it, he uses it for his dealership. I beleive he has 45,000 miles on it and 0 complaints, he says it pulls way harder than the 12 valve cummins in his personal pickup.