PonyRider98

When I have my engine rebuilt, what parts should I swap out for aftermarket ones ? Should I keep the same engine block ?

Mach1

It depends on what you want to do with it. For sure i would do all seals gaskets, sensors, plugs wires stuff liek that. As for cams and heads and cranks and stuff, like i said, depends on what you want.

PonyRider98

what can I put in it to make horsepower without supercharging it ?

Mach1

How much would you liek to make at the crank?

PonyRider98

since its an auto, I have no idea how much power I could get out of it, from what I understand eventhough the 98 GT is rated at 225, the autos produce much less HP, I'm thinking somewhere near 300 HP would be good.

Mach1

Your prolly gonna wanna beef up that tranny. For that much power, your gonna need pretty major work. Full exaust, heads, cams, a little bit of boost maybe. You could also swap another 4.6 in if you could find a nice one for a good price. Im not really an expert on those shoc 4.6s but im tellin what i know.

stonemonk9

im definately gonna say do the long tube headers while u have it out liek that, because there is no room to put headers on there with it in

EJ23

Go with a full forged lower end, ported & polished stage 3 heads, stage 3 cams, richard racing intake manifold, big throttle body,big MAM & a good CAI with a big *** K&N air filter!! For exhaust go with long tube headers, Dr. Gas Off road X pipe & a 3" Cat-Back with 3" Borla Stinger Mufflers!

04ShakinSteed

There are many things that you need to do for this project:

Heads, cams, longtubes, o/r x, straight through exhaust, pullies, timing advanced, maf upgrade, and a ported intake to name a few

EJ23

btw if you want a real beast add a Twin Turbo kit to what I listed above.