5.9L Magnum questions

skep419 said

I'd disagree with #2 (I wouldn't trade bottom end for anything on a street car (choose wisely))

#3 good converter>headers

#4. Depending on what he's doing with the car I've heard headers on an early A are an absolute pain in the butt!
I'd take whatever power loss manifolds brought for the possibility of power steering and money being saved from the swear jar installing them.

Click to expand...

Well you know what they say about opinions. Opinions are asses. Everyone has them. Some folks have better asses than others. I think that's how the saying goes ☠️

Anyway...

Nothing in this build screams high mpg daily driver. 350+ gears, 3000stall, 750 carb, etc.

At 360 cut in, you're not losing low end power with a slightly larger cam. But you are gaining a lot of general area under the power curve as the RPMs climb to 3000 and higher. I'd absolutely not go lower than a 218 duration on the intake side cam. Especially not with a 3000 stall.

Also, honestly, you're not gonna replicate what Charles Servidio does on his YouTube channel. Ootb Magnum heads are just fine for this combo. If you're smart you'll have no problems whatsoever getting to 350 HP.

Put those 273 manifolds on though and indeed... you'll choke that engine down and it's not gonna be nearly peppy as you'd like.