945LSTANG

3.73s shouldn't really hurt you at all.

btw..i recognized that name before i came in the thread. stlmustangs lol. small world.

Veets44

I switched to 4.10's this summer and I noticed a drop in mileage, but it is definitely due to the pedal to the floor thing. I got used to driving pretty conservatively with the 2.73's, so with the change, I'm all over it. I'm getting 16 mpg, but not much highway driving. I gotta say it is a great deal more fun with the 4.10's gas mileage or not.

H0SS302

I have 4.10s, and full bolt ons and got a steady 24mpg on a trip to the coast a few weeks ago. Thats going 80 the whole way with mixed city/hw...AND a t45 tranny(turns more rpm than a t3650 in 5th).

BIGMAC9940

i got 3.73 and when my drove from San Antonio to OKC i got 27mpg on the highway averaging 80mph

02pewtergt

yeah small world. THanks for the help everyone i have got a chance to get a set of nex in box 3:73 gears and the matching speedometer gear for 100.00 bucks so i wanted some general information before i buy them.

H0SS302

You dont need a speedo gear, you need a tuner or speed cal.

98redstang

+1 ^ i lucked out with my year only need the 5 dollar plastic part

sweetcoupe

I got the 4.10s and I wouldnt go any lower. Gas mileage wasnt really an issue. You do burn more but its barely noticable if you drive the same as you did before. And the speedo gear may be cheaper but you do need the tuner and youll be glad you got it once you tune that beast

MJH78

20mpg vs 22mpg driving 10,000 miles per year and $3 gas is $135 a year in extra fuel costs. so not really a big deal even if you did get 2mpg less.

02pewtergt

I am going to get it tuned early next year most likely for now the speedo gear will work with christmas and a 2 year old i have to wait for my toys LOL But it is worth the wait