Originally Posted by jl4020
whitch dart cast heads would be better to run on a 582?
If you need Iron you'll need the largest head they make, 345cc.
even at that the port cross sectional area and airspeed will limit the power
you can make, airspeed will be high.
what's the application?
John858, ask your engine builder if he's tried the RFD 24*, he might be surprised.
Curtis