Lateralus782

Now that i use my car as a DD, the 4.10's are beginning to be a real PITA. i was thinking of switching them to some 3.55's to get some driveability back. does anyone have any other suggestions? also is the install i can tackle myself with a friend and a good bit of experience? im new to working on stangs

P.S. looking at gas prices, any hope i might gain some fuel economy back? i drive the 4.10s pretty carefully to keep fuel mileage as high as possible

sprostang

Whats wrong with 4.10`s?? I still average 20 mpg with mine city/highway combined.

Lateralus782

I hate going slow on the highway. around here, everyone goes 80.. 60 is downright dangerous at times.
i can live with them, and they are really fun when i can mess around, but im just trying to see if i will benefit from making the switch

karmstrong_2

The "best" gears for daily driving will be stock of course...that's what they're made for. Any others are really just gonna depend on how you drive it, which goes for stockers too I suppose

lizzyfan

Well put

Hoppers04Gt

Keep the 4.10's spend the money on something else.

Reed44

just buy a $500 pooper

cliffyk

As I drive 600 to 800 miles a week I went around this issue for a couple months. My normal daily drive is a 50 mile each way commute with 15 miles on one end at 50-70 MPH, 33 miles in the niddle (I-95) at 75-90, and a couple miles at 45-60. Doing this with the stock 3.27 gears I got 23.5 to 24 mpg--after a lot of reading and calculating I went with 3.73s.[/align][/align]So, after a couple fill-ups I find the 3.73s have cost me 0.5 to maybe 1.0 mpg, crusing on I-95 at75-90 is 2350 to 2800 rpm, and driving around town is a lot more fun! I know a lot of folks say get 4.10s or you'll regret it, but I bet they don't drive 40k a year with a 93 octane tune--I'm blowing $100 a week on gas right now...[/align] [/align][/align]Andas forthe $500 S-box idea--I bought the GT to drive it, not so it could be a garage queen. I figure the more you have to drive, the more you should get to enjoy it![/align]

svt_97cobra

[hr]

I would not recommend installing the gears yourself. If you have them off by just the slightest bit you'll start hearing gear whine and might mess other things up also.

cliffyk

Here's the best DIY write-up I've seen; you will need a hydraulic press (6-10 ton) to remove the pinion bearing (and maybe to re-installl it), and if you do as told in this write-up it is quite possible to get the clearances correct.[/align][/align]You will also need anaccurate 6" measuring caliper to get the pinion depth correct, and a dial indicator to set the backlash--Harbor Freight has both of these for less than $50 if you hit them right.[/align]