The camel hump heads flow well enough to be rated at up to 365 H.P. on fuelie Vettes. Don't know how much power you want to make, but I have these heads on my 400 and it has dyno'ed over 450 H.P. If that is flowing like crap, so be it. I used a Carter 825 Cfm carb for the dyno runs on a Corvette high rise manifold. The combination ran middle 11 sec. in 1/4 mi. drags back in the early '70's in a 1966 El Camino
