[frankenstein]

ive got 32lb injectors, 75mm throttle body and spacer, 76mm mass air, high flow fuel rails, ported (75mm) cobra upper and lower, and soon to have my gt40 cast heads ported and B cam? do i need to go with bigger throttle body/injectors/maf?

[mdvaldosta]

Your injectors are gonna get maxed out pretty quick, you'll need at least 42#'ers.... 18# of turbo boost is pretty serious, 500hp will be pretty easy and that's where blocks start to break. I wouldn't use a B cam with a turbo, you'll be bleeding off alot of boost. Find something with a staggered intake / exhaust duration... something designed specifically for boosted 5.0's.

[mikes93fox]

I would like to add the most bang for your buck cam that FRPP makes for boost is the F cam. And I would take MD's advice on the 42's with that much boost. You didn't list your fuel pump in your mods, you definitely need to upgrade to a 255 lph and possibly a boost a pump or t-rex unit to help with the fuel pressure. I would really watch how much you try to get away with on that block, 500 is almost always the universal maximum and then it's just a ticking time bomb. Your probably going to be happier with lower boost numbers for maximum horse and longetivity out of your setup. I'm thinking somewhere around 12-14 psi.