Common Transmission Gear Ratios
COMMON TRANSMISSION RATIOS
MANUAL TRANSMISSIONS:
Richmond Gear T10 4-spd manual
2.43, 1.61, 1.23, 1.0 PN: 13040000070
2.64, 1.75, 1.34, 1.0 PN: 13040000069
2.64, 1.60, 1.23, 1.0 PN: 7021090
2.88, 1.91, 1.33, 1.0 PN: 13040000072
Richmond Gear R.O.D. (Richmond OverDrive) 6-spd manual
3.27, 2.13, 1.57, 1.23, 1.09, 0.76
4.06, 2.22, 1.57, 1.23, 1.09, 0.81 (optional 0.88)
3.01, 1.88, 1.46, 1.19, 1.09, 0.62
Richmond Gear (Doug Nash) 5-spd manual
3.27, 2.14, 1.57, 1.23, 1.00
Borg Warner T56 6-spd manual
3.36, 2.07, 1.35, 1.00, 0.80, 0.62
Ford Mustang 5.0l 5-spd manual:
1986-1988
3.35, 1.93, 1.29, 1.00, 0.68
1989-1994 5-spd manual
3.35, 1.99, 1.33, 1.00, 0.68
Borg Warner Close Ratio T-5
2.95, 1.94, 1.34, 1.00, 0.63 (0.80 optional)
Tremec 5-spd manual (aftermarket)
3.27, 1.98, 1.34, 1.00, 0.68 Model: 3550
3.18, 2.06, 1.39, 1.00, 0.65 Model: 3750S
1987 VW GTI 16V 5-spd manual
3.45, 2.12, 1.44, 1.13, 0.91
ZF 6-spd manual (Used in '93-up Corvettes, including ZR-1)
2.68, 1.80, 1.31, 1.00, 0.75, 0.50
AUTOMATIC TRANSMISSIONS:
PowerGlide 2-spd Automatic
1.82, 1.00
1.76, 1.00
Ford C-4 3-spd automatic
2.46, 1.46, 1.0
Ford C-6 3-spd automatic
2.46, 1.46, 1.0
Ford AOD 4-spd automatic
2.40, 1.47, 1.00, 0.67
AOD Wide Ratio 4-spd Automatic
2.84, 1.55, 1.00, 0.67
Ford AL4D (1987-1989) 4-spd automatic
2.47, 1.47, 1.00, 0.75
Ford E4OD 4-spd electronic automatic
2.71, 1.53, 1.00, 0.71
TH-700R4 (1991 Chevrolet)
3.06, 1.63, 1.00, 0.70 rev-2.29
200-4R (Grand National transmission)
2.74, 1.57, 1.00, 0.674
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