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Mustang T56 Guys..... What rear gears are you running?

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Old 08-11-2011, 02:37 PM
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Default Mustang T56 Guys..... What rear gears are you running?

I'm getting ready to build my 8.8 and not sure what gears I want. I'm thinking 4.30s? What's everyone else run? Looking for something for a occasional strip car.
Old 08-11-2011, 04:16 PM
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You're high. If only an occasional strip car, 4.30 is no good. Final depends on tire diameter. If your tires are in the 27" + range, I'd say 3.90's max. If tires are in the 26.5 - range, I'd say a 4.10's max.

Not a Mustang spec T56, but, in my Viper spec T56 & 26" tires, I use 3.90's & it's just about perfect from great 0-whatever acceleration through low highway RPM @ 65 + MPH..
Old 08-11-2011, 07:14 PM
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I had 3:90's in a 440rwhp car with T56 and it was great. (not an 8.8" diff)

Get some 3.73's or 4.10 gears from FRPP (Ford). They are the quietest. Richmond gears whine.
Old 08-11-2011, 08:25 PM
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Back up the bus, what is your engine combo? What are your intentions for the car? Is it near stock weight, what tires are you running?
Old 08-11-2011, 09:45 PM
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I have 4.10s and a 28 inch tall tire. I am stepping down to a 26 inch tire so i can actually use the 4.10s.
Old 08-11-2011, 11:51 PM
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4.8 with about 350 hp at the crank, for now. Little lighter then stock. LX w/ power windows.
Old 08-11-2011, 11:54 PM
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I've got 373s. Stick with them for now?
Old 08-12-2011, 01:40 AM
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Yea 3.73s should be perfectly fine.
Old 08-12-2011, 02:17 AM
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Tires are 335/30-18s
Old 08-12-2011, 07:00 AM
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I would stick with the 3.73s, the 4.8s like rpm, your car is fairly light. If you had a 6.0, I would say 3.55 or even 3.27 only because of the torque difference. Also, this is for a car that actually gets driven around and not a track star.

Run the 3.73, you could change it later.
Old 08-12-2011, 10:24 AM
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Originally Posted by classic_speed
Tires are 335/30-18s
Those are around 26". As noted earlier, 4.10's or maybe 3.90's.
Old 08-12-2011, 10:54 AM
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373s it is then. Thanks guys. Ill post my results.
Old 08-12-2011, 10:59 AM
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I had a buddy put richmond 4.88's in his stang with his viper spec t-56 and it was the dumbest thing he's ever done. Zero traction and horrible gas mileage. Feels way faster than it really is too.
Old 08-12-2011, 01:26 PM
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I've got 3.73's in my 94GT with a 393W and a T56 in it. It runs about 1900 rpms @ 75 mph in 6th gear.



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