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Rear end gear ratio [Archive] - StangBangerz Forums
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mustang_gt88
10-25-2011, 06:02 PM
I need to know what my gear is im makred the drive shaft to the rear end and the tire to the inner fender and the drive shaft made 3-1/4 to 3-1/2 turns to one. Can anyone help with this?:D
Stangman
10-25-2011, 06:24 PM
Sounds like a 3.27 or a 3.55
mustang_gt88
10-25-2011, 07:04 PM
Would a373 be better
Stangman
10-25-2011, 07:23 PM
Depends......
2-8-1
10-25-2011, 09:23 PM
A 3.31:1 gear would be dead in the middle between 3 1/4 and 3 1/2 turns, but very unlikely.

Rear gear choice depends on what the car is going to do, the trans gearing, HP and TQ curves, peak HP RPM, and even what size tire. I find that a 3.73 is a catch all for a street/strip car though, but if you want to compete, your choices may be vastly different.
mustang_gt88
10-25-2011, 09:55 PM
The car will mainly be a street car.
blown96cobra
10-25-2011, 09:56 PM
I'd say it's a 3.27. Pretty common gear for a 5spd car.
Stangman
10-25-2011, 10:11 PM
I agree... i think a 3.73 is like 3 and 3/4 turns last time i checked
mustang_gt88
10-25-2011, 10:25 PM
i have a carbed 302 with headers, edelbrock performer, 650 double pumper holley, e cam, over under pullies, headers, msd ignition, and h pipe. Would the 373 be a better gear for me.
Stangman
10-25-2011, 10:31 PM
With a 3.73 and a T5 youll be at 2k rpm at 60mph. A 4.10 would put you at 2500rpm.
mustang_gt88
10-25-2011, 11:08 PM
What would it cost for a 373
Stangman
10-25-2011, 11:14 PM
Google is your friend. Theyre aaaallllllllllll over the place.