Previously posted Mar.25th 2011 in the After Markets Heads section as, "Pump Gas Dyno Test." I'm surprised there wasn't more apparent interest shown, at the time, particularly from those clamouring for 4" bores & 400 H.P.! That 337 cu" street engine, tested at approx 393 H.P. & 420 lb.ft. of torque, at a max of 5400 rpm.! ... In comparison, I was just perusing a new cars buyers guide today & noted that one of Gov't Motors new Ls 6.2 L /378 cu. in. Ca-a-o engines, is rated at 400 H.P. & 410 lb.ft. It's a substantially bigger & modern electronically controlled engine, that has little if any more peak power than a revamped version of our favorite 50+ yr old engine... Interesting.

Paul