So this is a 516 Big Block head? The heads are key, but what is the rest of the engine? Big diff in well ported 1.73 exh and 2.14 intake heads vs stock takes off's from a 67 383 with 1.6 exh valves. Id say a moderate effort 400-450 hp should be rather easy with pump gas.
[color:"red"]65 Hemi Belvedere coming soon [/color] [color:"#00FF00"]557" Indy engine 1.07 60ft 144mph in the 8th 2100 lbs package [/color]
