Looking for opinions to reach my 400 rwhp goal

Paladin0027

New Member
Oct 11, 2009
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With so many bolt ons and other mods out there its hard to pick and choose which are worthwhile to purchase to attain personal goals. I have a 2001 GT convertible, automatic and made a goal to reach 400 rwhp. I purchased this vehicle less than a week ago from a dealership so did not have the opportunity to ask the previous owner what mods he bolted on. From what I can tell the previous owner bolted on an aftermarket catback, full length subframe connectors, and lowering springs. If anyone can provide me with guidance and/or experience as to what mods I would need to reach this 400 rwhp goal I would greatly appreciate it. Things to keep in mind the car has 77k miles on it, would like a combo to include a positive displacement supercharger, must stay California emissions legal, or easily reverted back to legal. Any suggestions would be helpful. Thanks!
 
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A Kenne Bell (the smog legal one), off road x-pipe (gotta swap it out when you smog), a cat back, and some comp cams stage ones (the only cams I know for sure pass). I would assume that would get you pretty close to 400 rwhp, maybe a little more, I not positive what KB's are making.

Or go the procharger route if positive displacement isn't a must. With nothing but the procharger on my car dynoed at 394hp/405tq. No exhaust or anything. The only difference would then be the Bullitt intake.
 
Tork Tech makes a nice setup to run an 03-04 cobra blower with intercooler setup I have seen 402 @ the tires through an auto. Look it up @ Tork Tech Inc. It's an awesome setup for about $5,000 plus tuning and install
 
Ok, another question pops into mind when you mention that just a supercharger will put me over the 400 hp mark. I would like to keep the car reliable so I was thinking of a more conservative psi. Would a 6-9 psi boost on say a kenne bell put me close or over the mark while maintaining reliability of my engine?
 
Go with a Kenne Bell. You can change your pulley size from 6psi to 14psi. Depends on your elevation too. I have a 9psi pulley and I'm only getting 6psi out of it at 6350' elevation. Not sure what my hp is since I haven't worked in two years so funds for Dynos and tuning are non-existent.
 
I've got an 04 GT Vert Auto, here's my current setup:

FRPP 3.73'S
BAssani O/R X-Pipe
Accufab Plenum
Accufab 75MM TB
Flowmaster 40'S
Vortech V3 Supercharger Non-Intercooled Kit running about 6-7psi

Dyno'd at 364rwhp

Today I'm adding an Anderson Powerpipe and will be adding a 3.33" pulley as well. Current have the stock 3.60" pulley

Will get a new tune done and hope to be around 400rwhp about 10-12psi

My car is my daily and it has a conservative tune

Good Luck