Gears+Cobra=?

[fox87stang]

i have a 99 cobra with flows and CAI. My question is have any of yall ran your cobra with stock gears, then with your current gears? What mods did you have at the time of 3.55 gears and what mods at the time of your new gears?

I'll probably go with 4.10s but would like advise about 3.73s up to 4.30s. One guy has told me that with 4.10s, you shift just shy of the 1/4 mile mark.

With traction not being a problem, what kind of decrease in 1/4 times can i look forward to with these different gears? Thank you for you input

 

[Uncle Meat]

Popular upgrade for the pre- 03/04 Cobra's is a set of 4:10's. Need to get that 4v spinning quicker and the lower gear ratio really wakes the car up. Never heard anyone complain after they performed the upgrade. Not sure what gains you'll see in the quarter mile though. I'm sure one of the other guys will pipe in and say though.

U.M.

 

[fobra559]

I seen some with 4.10's get high 12's with some decent traction.

 

[fox87stang]

alright guys, i appreciate it..any input on the other gears

 

[blackfang]

I never wasted my time with anything below 4.10's on my 99 and my 97. The 3.55's and 3.73's suck and aren't worth the time and money on a 96-01 4V.

 

[fobra559]

Don't even consider the other gears. 4.10's is where it's at on the 99-01 cobra's.

 

[WANNA_BE_GT]

4.10's FTW!

 

[fobra559]

4.30's

 

[hvcobra99]

Gears

I have a 99 cobra and I love my 373 Gear
I have magnaflow catback system which sound awsome in my opinion

BBK throttle bodie
SCT Maf 90mm
Diablo Chip dyno tuned
Steeeda Underdrive pulleys
PHP intake spacer
JLT cold air induction
Steeda tri axe shifter
Ngk Spark plugs just installed
Suspension
Eibach Pro kit springs
Tokico adj shocks and struts
Steeda camber caster plates
all rolling on 255/35/18 front 265/35/18 Rear
Saleen powder coated 18x9 (Glossy Black wheels)
Saleen body kit
Waiting on Saleen decals Going black
Upr Engine Dress up kit level 2
Dallas speed calibrator
Soon I will get bassani Mid lenth headers*

SO my question is what do you think of my set up. I love it but if you guys could offer any suggestions I would appreciate it.:SNSign:

 

[blackfang]

You need more gear! 3.73's do not cut it.

 

[hvcobra99]

373 a bad gear why?

Why is 373 a bad gear for 99 cobra? What makes the 410 better and why?
How is it on city/highway driving in terms of gas usage or just how high the rpms will be at lets say cruising at the speed of 70mph

 

[blackfang]

Why is 373 a bad gear for 99 cobra? What makes the 410 better and why?
How is it on city/highway driving in terms of gas usage or just how high the rpms will be at lets say cruising at the speed of 70mph

The DOHC loves to rev. The power band doesn't come on in the lower RPM's but in the higher range and the 3.73 just doesn't cut it when you need to get into the power. Take a ride in a 3.73 gear Cobra and then ride in one with 4.10's or even 4.30's and you will be amazed and notice a big difference. Even if they were equally matched mods wise, the 4.10/4.30 gears really wake up the car a lot. I had 4.10's in my 99 and went 4.30's on my 97 I have. Now 4.10s kinda hamper 1/4 mile times being you have to shift into 4th right before the traps, where the 4.30's will put the car in the power band when it crosses.

A Mustang owner should not be worried about MPG!! However, I have gotten 24 mpg with 4.30's.

Oh I would also venture to say a stock 99/01 Cobra with just 4.30's could take your car as it sits with all those mods.

 

[hvcobra99]

410 gear

Hows the 410 on highway driving and everyday summer car driving

 

[blackfang]

Well what are you looking for?

If it helps, I drove my Cobra as a daily driver with 4.30's in it from Jan 2003-Jan 2008. I have driven from Virginia To Missouri and back, gone from Virginia to Kentucky and back.

 

[hvcobra99]

373 gear

how much to change from 373 to 410 gear

 

[blackfang]

how much to change from 373 to 410 gear

As in?

 

[hvcobra99]

373 gear

Labor and Cost.

 

[blackfang]

Anywhere from 350-500 for parts and labor depending on the shop

 

[V6&V8SHO]

I went with a 3.73 on my 01 with the T56 6 speed. I have no problem getting into the power band. And it is manageable on the street with summer tires as opposed to tire smoking 4.10's. 4.10's and up are great for the dragstrip with a good tire.

 

[blackfang]

I went with a 3.73 on my 01 with the T56 6 speed. I have no problem getting into the power band. And it is manageable on the street with summer tires as opposed to tire smoking 4.10's. 4.10's and up are great for the dragstrip with a good tire.

T56 is a different transmission than a T45 so you can't compare that one.

The 4.10's aren't the best gear for the dragstrip for reasons I previously mentioned. They are a great fun gear for the street though.