fazm

first, why do you need to do forged internals to hit 400rwhp? ive had 400+rwhp for nearly 2 years now on the stock engine.

try again. the 4.0 has forged rods. that is it. the pistons are not forged, the crank is not forged.

it is not better to mod than the gt. the GT has a MUCH MUCH better valvetrain.

also how do you plan on doing heads, cams, longtubes and an intercooled FI system for $4000?

3rd if big power is your goal, as nice of a system as the xcharger is, its not the right system for big power. average is about 280-290rwhp through a manual, little bit lower through an auto.

basketballord

illin

You may want to check prices. My old man just picked up a brand new 08 GT auto(they had 20+ to pick from) for $20K cash out the door.

There is a glut of leftover out there. You would better off going with a new GT for now...waiting a year or two and going FI. Cheaper int he long run and bigger power for sure.

tfyzorg2

your right. im tired of this car

im looking at my dealership, they got bullets for 29k and gt converts for 29k..

sounds tempting

Sancho805

what up legend. trying to get a t-shirt printing biz going so i've been off the forums more than usual. a cool mustang shirt is in my plans of future t-shirt designs so we'll see how that turns out.

internals would be interesting. very curious on the results. its just that most end up opting for F/I.

Mustang_Joe

Thank you for explaining your situation, they way your first post was I misinterpretted what you had.

A newer style GT is probably the better way to go for bigger power cheaper. Or if you really don't have that much money to spend, look into new edge gt's (99-04). They make big power pretty well with f/i and have a pretty good supporting system to take the power (rear end and I hear people DD the manual trans with 400rwhp+ and a new clutch, not sure about the autos but probably the same). I probably should have gotten a new edge gt for the same price I got my 6, but my plans weren't high hp at the time and I got a great deal $11k tax included for an 05 V6 with 26k in september. Good Luck on your car journey! In time everything will fall into place

Prancer_grunt03

I've been lookin to twin turbo my 4.0 after i get back from iraq but i know if im gonna be runnin 15-20lbs of boost outta each turbo it not gonna go very well so what all can i do to the engine so it can take it? also my syncronizers arent doin to good so whould i either get ball bearing or stay with syncronizers????

Mustang_Joe

I don't know the difference between the turbos on the market, so can't help you there. But would like to tell you as stated, at that psi per turbo you will definitely need forged internals and a crap load of other upgraded stuff. What rwhp are you shooting for? Fazm has 12psi through a single turbo with a few supporting mods and has just about run 11's on a little over 400rwhp on stock internals. The car is his daily driver too.

Most I've seen run on our cars psi on stock internals was wise-
12psi-turbocharger
14psi centri (vortech/paxton/procharger)

I would say with a good tune that psi is pretty safe, but beyond that is asking for trouble. So on stock internals I'd guess 6psi per turbo would be safe, but that is a guess. I'd suggest a single turbo over twins though.

Acid_Ghost

fazm you said that you've reahed 400 rwhp a while ago , can you more or less tell me your set up so i can have something of a guideline?

rygenstormlocke

Weisco makes pistons for the 4.0, I had them in my car. I had a fully built block with the works, fasteners, studed, bearings, polished crank, cams, p&p heads, cobra valve springs (everything but rods). It was fun, it held up to 600ft lbs of tq till one of the stock rods blew a hole through the bottom of the block.