[Bob Broberg SPF667 460BB]

I beg to differ.
1972 Ford 460 block. 0.030 over built with all aftermarket parts. 550hp on motor plus 150hp NOS. Got 60,000 miles on it now. No clearance problems, no overheat problems. Canton race pan, Ford Blue Thunder intake. Just keeps on tickin. On 5th set of rear tires for some reason.
AZ Bob