Good 400+ HP 360 build

YY1 said
I wish that Hot Rod mag article had gone a head and tested the cam (or one that didn't require machining) with out the high dollar heads and rocker assemblies.

I used to know what the diff was between the 300 and 380 HP versions of that crate motor. Were the pistons different?

the 300 horse is a stock magnum with a carb and headers, which actually came out to 320

the 380 has a m1 single plane and a hyd flat tappet 292 @ 501

I have read that the 380's will pull close to 400 hp on the dyno