360 Magnum vs 340 mild street build

360 Magnum vs 340 mild street build - my experience

65TTCuda said
The Duster with the cheap Speedmaster heads , I'm assuming they are PCE281.1773. First what kind of power do you think that car is putting out? secondly do you think these heads could support 450hp? thirdly do you think that stock magnum heads with a full porting including bowls would flow like the speed master heads?

They are the "unported" SM heads. 730 to my front door on Black Friday Sale is what I paid.
I don't know the power of the engine, there are "ball park calculators" online that can try an guess. It runs 12.9's with 3.23's, stock converter, and about 3400 lbs at the start line. My cam is very small (less than a factory 340), so I am NOT taking advantage of the heads.
Fully ported Magnum heads would outflow my "untouched" SM heads is what I'd guess.
Keep in mind, the car only went about 2 tenths faster with the SM heads vs untouched stock 360 heads. Again, that would be due to the small cam in my opinion.