what do u think it will run?

[5literstang]

ok i took my 99 cobra to the track a few months ago and my best time was a 14.4 at 101 with a 2.4 60 foot. i have 18's on it and still have the IRS the only mods i have are x pipe w/ cats, catback, tri-ax, springs, and cold air. in the spring i'm goin to swap out my IRS for a solid axle if i can find a donor, and will be gettin gears put in, what gears should i do 4.10's or 4.30's? how much difference in mpg are they? and will that put me in the 12's? if so how far into the 12's? i also will be running on DR's with pro stars. thanks -Jeff

 

[jmk97GT]

If you're daily driving this, I would go no higher than 4.10s unless you really dont take it on the highway.
You should have ran a lot better time than 14.4 with those mods - thats a time I could almost get with my 97 GT (well...a few tenths off).

Anyways, I'm just assuming you couldnt get much traction because that 60' time wasnt very good. Drag radials should help a LOT and you have to remember that cobras can run a lot quicker times than what you did WITH IRS, but a solid axle will definetly help.

If you really want to get in the 12s, just get blown - it wont be too hard then if you get a kenne bell .

EDIT: I saw your trap speed (101) so your problem is definetly traction. Solid axle + DRs will help tremendously.

 

[bbueschel]

Yeah u should definitely get 4.10s. I have a 2000 GT and they talked me into getting them. You should also probally run better than a 14.4. My car, with basic bolt on's and bald 245's ran a 13.9 with two people in the car. It also had 32psi tire pressure. If you get what you plan to, and practice launches 13.5-13.7 is possible. Good Luck!!

 

[5literstang]

i know that my car is capable of mid to low 13's, it's jsut that it's kinda hard to launch that IRS, and i know there not good for the track so i'm goin to swap it out, so in the spring gears and a solid axle are on the list. i think i can get a high 12 with gears, solid axle, and DR's, if i'm wrong please correct me, and i do not want to superchage just yet, i would rather get cams and prep my shortblock up and get a T56. then after that i would superchage, but i dont know if iwould go the kenne bell route being there expensive and i have heard they dont make the power they say they do, i will be goin the procharger route. thanks

 

[RED92VERT]

For drag racing get the 4.30s i have the 4.10s in my mach and wish i went with the 4.30s. This summer i will be swapping them out. Going from 355s to 4.10s i noticed 2mpg diff.