This is for 340 builders

im asuming those hues heads would be a significant improvement over the 340 j heads. and it wouldnt be nesecary to go 202 valves for up to 500hp. what kind of cam would you need to feed it.

I am going to use a XE284 from Comp, Hydraulic Flat Tappet. Cheap price also at Summit $120.00

This cam is .537/.540 lift with 241/246* Duration @ 50
C/L is 110*