Is 426ci 360 a small block?

Got the engine back on the dyno today. The crank scraper/windage tray trick was worth 8 peak horsepower. We now stand at 611 horsepower @ 6,300 rpm and it will carry 600 hp from 6,100 to 6,600 rpm where we shut it off. Three pulls made 610, 611, 611.

Man I wish we had better heads.

Wait! Was that an echo?