Best 360 magnum cam specs oregon regrind
Hoping to get it to run strong race application
If it's a street car, you first have to decide how much streetability your willing to sacrifice, how deep of gears and high of a stall your willing to use. Heads are where the power is at, cam intake, headers etc.. allow you to extract that power, weaker heads gonna need more aggressive cam and cr to try and reach any hp. Stock magnum heads can get around 400 hp without going too crazy of a cam (230-235 ish) to gain 80 hp is gonna take a combination of porting cr and more cam depending how well you can port heads, do you have a flow bench, have you ported before ? I'd don't know how crazy of a cam you can get with a regrind.
Like Jersey Devil said 425 hp is a more realistic goal maybe 450 hp if you do a really good job porting and anything over is a bonus.
Plus Magnum heads are known for cracking, you probably don't want to sink a ton of money into them, you'd be miles ahead to pick up a set of speedmasters or second hand aftermarkets heads like older EQ's or Eddies etc...
480 hp 360 is a fairly serious engine gonna have to spin it into the 6000-6500 rpm to get it probably shifting 6500-7000 rpm. Not something you just throw together.