I talk to the shop that is doing all the work and they suggested 4.30 gears would be good for the 98 Cobra block swap they are doing for me. What do you guys think? I do not use my GT everyday and sees highway every once in a while. Anyone have 4.30s?

 

With those gears you would get the most out of the cobra motor but you would have sucky gas mileage if you did run it on the highway. I would get your driveshaft properly balanced if you have em installed otherwise youll probably get some vibration at any highway speeds.

 

With my SUV at 15mpg Im use to bad gas mileage.

 

this is your weekend warrior huh? if you drag race alot and have slicks to use those 4.30's are gonna rule, you will love them.

 

Your gas mileage won't be greatly affected because of the way your 5th gear is geared, but it all depends on your right foot :violent1:

 

4v engines love the really high gears so i say 4.56 you'll love it

 

Yes its just a weekend car so I think it should be ok with 4.30. Spike Africa you live in FL, how do you think it will handle when we hit the rainy season? :toothy2:

 

i just got my 4.30s installed in my 96 gt. Holy wow!!!! what a difference those gears made! i thought they were going to be too much but wow!!! i love them! dont fear the gear! :glasses10

 

it should be fine, my truck had 4.10's with 3k stall convertor, just had to a little less aggressive at stop lights or it would spin and slide

 

I have 4.30's on a daily driver. I get 21 mpg at 75 mph on trips. I would go either 4.30's or 4.56's on a 4v.

 

not to impose on this thread.....but i got a 2001 gt with a couple of mods..should i get 3.90's or 4.10's.....i am on the highway often.......i want a better 0-60...but i want my car to be an effecient daily driver too.....thanx the :newbie:

 

im in the same boat but i bought the 3.90s already and i have an auto. 4.10s are a perfect gear. im installing them in 2-3 weeks.

 

As far as highway mileage these cars do well with 4.10's, remember you spend most of your time cruising in overdrive. I get 21 mpg with 4.30's @ 75 mph. I have never checked out what I could get @60, too impatient I guess.
I found my torque converter sucked a couple mpg off on city driving.

 

Ditto. Mine too.

 

Another vote for 4.30's....I have a 96 gt, with an 02 motor with all the bolt ons. I'm sticking a 4000 stall converter with a set of 4.30s in the car. And yes, this is my daily driver...actually its the only car I own since I sold the other stang 2 years ago.

 

With a Cobra motor i would go with 4.56's !

Lew

 

I will get a turbo in about 2 years what gears would you go with.

 

With a turbo I would go with 373's . Gears aren't that much so I would still do 4.56's while your N/A .


Lew