Biggest smallblock?

Hows he doing that?
Whats he using :S


Biggest ive heard or read about was around the 450 mark
using a mopar block with a deck height of 9 odd inches.

He's already built a 474" engine. Figured he'd kick it up a bit.

http://board.moparts.org/ubbthreads/showflat.php?Cat=0&Number=5439966&page=0&fpart=1&vc=1