My small block was in one of the engine master contest. It did not win but it made 662 hp @ 7300 rpm on pump gas at 394 ci.and has a 255/266 @ .050 roller cam. I do not consider that a whole lot of duration. Heads are Indy 360-2 and flow 337 @ .650 on intake.

1.33 60 ft,6.21 at 110.59 in the 1/8, pump gas small block,2950lbs,drag radials,mufflers and driven to track ...