I've got a 2004 Mustang GT and was wondering which one of these mod's would show the best improvement at the track? I'm basically stock other than a CAI. The track open's at the end of the month and I'm hoping to start the year off in the high 13's.
3.73s or o/r H pipe?
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johnnyt03gt
5 Year Member
http://www.stangnet.com/mustang-forums/746653-1-4-mile-track-progress.html
Gears will wake the 2v up quite a bit. The PI 2v lacks the torque that you might be used to. Gears will wake your car up quite a bit, and get your car in to the powerband quicker.
If you are racing your car at the track on street tires, 3.73's will help you out if you can slip the clutch and get traction. The one problem with this gear is, you will be shifting the car from 3-4 right before the traps. It is really not the best gear for the 1/4. I would suggest 4.10's for the track with a drag radial.
An offroad H Pipe is worth a solid .1-.2 gain, and 1-2mph in the quarter. You will gain 5-10rwhp, and you will drop quite a bit of weight over the stock mid pipe.
I would start out with the h pipe. You will gain ET and MPH, and will like the improved sound, which I am sure you are aware of. Gears would be the next mod after the mid pipe, followed by pulleys and a timing adjuster.
With an offroad h pipe, gears, pulleys, timing adjuster, and drag radials, you will have a low 13 second car.
Gears will wake the 2v up quite a bit. The PI 2v lacks the torque that you might be used to. Gears will wake your car up quite a bit, and get your car in to the powerband quicker.
If you are racing your car at the track on street tires, 3.73's will help you out if you can slip the clutch and get traction. The one problem with this gear is, you will be shifting the car from 3-4 right before the traps. It is really not the best gear for the 1/4. I would suggest 4.10's for the track with a drag radial.
An offroad H Pipe is worth a solid .1-.2 gain, and 1-2mph in the quarter. You will gain 5-10rwhp, and you will drop quite a bit of weight over the stock mid pipe.
I would start out with the h pipe. You will gain ET and MPH, and will like the improved sound, which I am sure you are aware of. Gears would be the next mod after the mid pipe, followed by pulleys and a timing adjuster.
With an offroad h pipe, gears, pulleys, timing adjuster, and drag radials, you will have a low 13 second car.
You answered my question and more. I think your right about the H pipe being the best choice. The car is a little to quiet for me anyways. As for the gears would the 3.73s do anything in the 1/4? 4.10s are a little too much for all the highway driving i do. Thanks for the info.
The difference in top-end performance between 4.10's and your STOCK gears is not much at all. The difference in top-end between 3.73's and 4.10's is neglegable.
Besides, its not how fast you can go.....its how fast you can get there.
DONT FEAR THE GEAR
98COBRA281
10 Year Member
+1 i have 4.30's now, and might go to 4.56's or 4.88's, with my 430's, the car will still do 150+mph....
+1
In 5th, at 75 mph I'm at 2500 rpm. Easy to remember, 75 at 25.
To the OP, start with the h pipe. Cheap to buy, easy to install, and will give us time to convince you that 4.10 gears really are better than 3.73s
32ValveRom
Member
4.88s? That is one I didn't even know existed.
Op, keep in mind when you get gears you have to reflash your Ecu. But If I were you I'd get the gears first. I'd save the H-pipe for when you're getting headers.
1low03gt
Dirt-Old 20+Year Member
I say neither!!!
4.10's will be your best investment.
This is my plan down the road.4.30's to replace my 4.10's.
4.10's will be your best investment.
This is my plan down the road.4.30's to replace my 4.10's.
Well, I think I'm going to end up buying the H pipe first. It seems like the perfect mod for the price right now. But you guys have convinced me to go with 4.10s when the time comes. Thanks for the inputs.
