Best 273 and 318 builds (NO 360's please)

Not having the "A" pool of knwledege, to draw upon,(this forum), I purchased a pre magnum, roller cam 318, complete engine. This to power my 67' cuda coupe. Plans have change since then and this build is to propell a 2,400 lb., Jensen Healy roadster. I have magnum "eddy's" and performer rpm, dual plane, of which I believe will tend to limit power over 6k rpm. ? Steel crank and .02" "hyper" pistons, shot peened magnum rods with ARP. bolts. I'm thinkin this should hold more rpm. ? Edelbrock says this is "only" manifold for Magnum heads. Thoughts ? Thanks, ateam.:cheers:

What LXguy said and;

I do not beileve the Magnum heads or intake will limit RPM in anyway except the prfile of the cam and the springs abilty to control the valve at high RPM's.

Shotpeened rods are a plus but do not hld a key to more power or RPM but the abilty to be there for any length of time with high power levels.

Edelbrock only has the RPM for the Magnum engine. MoPar has the M1 series in dual and single plane versions, and several types of single plane intakes. Hughes engines has a couple of versions as well.