Transmission Information
The Official 20th Anniversary Mustang Website and Registry
Transmission Ratios
| Tranny | 1 | 2 | 3 | 4 | 5 | 6 | R | Torque Capacity lbs-ft |
Weight lbs.1 (tr2, tc3) |
| T5 (83.5 - 84) 5.0 |
2.95 | 1.93 | 1.29 | 1.00 | 0.73 | -- | 3.15 | 265 | 75 |
| T5 (85 - 89) 5.0 |
3.35 | 1.93 | 1.29 | 1.00 | 0.68 | -- | 3.15 | 265 | 75 |
| T5 (90 - 93 excl Cobra) 5.0 |
3.35 | 1.93 | 1.33 | 1.00 | 0.68 | -- | 3.28 | 300 | 75 |
| T5 (93 Cobra - 95) 5.0 |
3.35 | 1.93 | 1.33 | 1.00 | 0.68 | -- | 3.28 | 310 | 75 |
| T5 (84 SVO) 2.3 |
4.30 | 2.37 | 1.50 | 1.00 | 0.76 | -- | ?? | ?? | 75 |
| T5 (85-85 SVO) 2.3 |
3.50 | 2.14 | 1.36 | 1.00 | 0.78 | -- | ?? | ?? | 75 |
| Normal 4 cyl T5's | 3.97 | 2.34 | 1.46 | 1.00 | 0.79 | -- | 3.71 | ?? | |
| Cobra R Tremec 95 Cobra R 5.8 |
3.27 | 1.98 | 1.34 | 1.00 | 0.68 | -- | ?? | 350 | |
| T5 A M-7003-A |
2.95 | 1.94 | 1.34 | 1.00 | 0.63 | -- | ?? | 305 | |
| T5 X M-7003-X |
?? | ?? | ?? | ?? | ?? | -- | ?? | ?? | |
| T5 Z M-7003-Z |
2.95 | 1.94 | 1.34 | 1.00 | 0.63 | -- | ?? | 330 | |
| T45 | 3.37 | 1.99 | 1.33 | 1.00 | 0.67 | -- | 3.22 | 375 | |
| T56 93 Z28 std. |
3.36 | 2.07 | 1.35 | 1.00 | 0.80 | 0.62 | 3.28 | 360 | 140 |
| T56 93 Z28 G92 |
2.97 | 2.07 | 1.43 | 1.00 | 0.80 | 0.62 | 3.28 | 400 | 140 |
| T56 94-95 Z28 |
2.66 | 1.78 | 1.30 | 1.00 | 0.74 | 0.50 | 2.90 | 450 | 140 |
| T56 ZF | 2.68 | 1.80 | 1.31 | 1.00 | 0.75 | 0.50 | 2.50 | 89-93 450 94 400 |
140 |
| TR3550Tremec | 3.27 | 1.98 | 1.34 | 1.00 | 0.68 | -- | ?? | 350?? | |
| TR3750 S | 3.18 | 2.06 | 1.39 | 1.00 | 0.65 | -- | ?? | ?? | |
| TR4250 | 3.27 | ?? | ?? | ?? | 0.68 | -- | ?? | 425 | |
| AOD | 2.40 | 1.47 | 1.00 | 0.677 | -- | -- | ?? | ?? | tr - 1504 tc - 34 |
| WR AOD11 | 2.84 | 1.55 | 1.00 | 0.70 | -- | -- | ?? | ?? | tr - 1504 tc - 34 |
| E4OD12 | 2.72 | 1.53 | 1.00 | 0.71 | -- | -- | ?? | ?? | |
| C4 | 2.26 | 1.46 | 1.00 | -- | -- | -- | ?? | ?? | tr - 1104 tc - ?? |
| C6 | 2.46 | 1.46 | 1.00 | -- | -- | -- | ?? | ?? | tr - 1404 tc - sb5: 30, bb6:31 |
| WR C610 | 2.72 | 1.54 | 1.00 | -- | -- | -- | ?? | ?? | tr - 1404 tc - sb5: 30, bb6:31 |
| SROD8
aluminum |
3.07 | 1.72 | 1.00 | 0.70 | -- | -- | ?? | 265 ?9 | |
| SROD8
cast iron |
3.29 | 1.84 | 1.00 | 0.81 | -- | -- | ?? | 265 ?9 | |
| GM 200-R4 | ?? | ?? | ?? | ?? | -- | -- | ?? | ?? | |
| GM 700-R4 | 3.06 | 1.62 | 1.00 | 0.70 | -- | -- | ?? | ?? | |
| GM TH 350 | 2.52 | 1.52 | 1.00 | -- | -- | -- | ?? | ?? | |
| GM TH 400 | 2.48 | 1.48 | 1.00 | -- | -- | -- | ?? | ?? | |
| GM 4L80-E | 2.48 | 1.48 | 1.00 | 0.75 | -- | -- | ?? | ?? | |
| Muncie m20 (63-65) Wide Ratio |
2.56 | 1.91 | 1.48 | 1.00 | -- | -- | 2.63 | ?? | |
| Muncie m20 (66-74) Wide Ratio |
2.52 | 1.88 | 1.46 | 1.00 | -- | -- | 3.11 | ?? | |
| Muncie m20/m22 (63-74) Close Ratio |
2.30 | 1.64 | 1.28 | 1.00 | -- | -- | 2.27 | ?? | |
| WR TL | 2.78 | 1.64 | 1.28 | 1.00 | -- | -- | 2.27 | ?? | |
| T10 A | 2.54 | 1.92 | 1.51 | 1.00 | -- | -- | 2.61 | ?? | |
| T10 B | 2.36 | 1.78 | 1.41 | 1.00 | -- | -- | 2.42 | ?? | |
| T10 C | 2.20 | 1.64 | 1.31 | 1.00 | -- | -- | 2.26 | ?? | |
| T10 D | 2.54 | 1.89 | 1.51 | 1.00 | -- | -- | 2.61 | ?? | |
| T10 E | 2.54 | 1.89 | 1.51 | 1.00 | -- | -- | 2.61 | ?? | |
| T10 F | 2.20 | 1.64 | 1.31 | 1.00 | -- | -- | 2.26 | ?? | |
| T10 G | 2.54 | 1.89 | 1.51 | 1.00 | -- | -- | 2.61 | ?? | |
| T10 H | 2.73 | 2.04 | 1.50 | 1.00 | -- | -- | 2.80 | ?? | |
| T10 J | 2.36 | 1.76 | 1.41 | 1.00 | -- | -- | 2.42 | ?? | |
| T10 K | 2.20 | 1.64 | 1.31 | 1.00 | -- | -- | 2.26 | ?? | |
| T10 L | 2.36 | 1.76 | 1.41 | 1.00 | -- | -- | 2.42 | ?? | |
| T10 M | 2.36 | 1.62 | 1.20 | 1.00 | -- | -- | 2.42 | ?? | |
| T10 N | 2.54 | 1.74 | 1.30 | 1.00 | -- | -- | 2.61 | ?? | |
| T10 P | 2.43 | 1.76 | 1.47 | 1.00 | -- | -- | 2.35 | ?? | |
| T10 Q | 2.64 | 2.10 | 1.60 | 1.00 | -- | -- | 2.71 | ?? | |
| T10 S | 2.43 | 1.61 | 1.23 | 1.00 | -- | -- | 2.35 | ?? | |
| T10 T | 2.64 | 2.10 | 1.46 | 1.00 | -- | -- | 2.71 | ?? | |
| T10 U | 3.44 | 2.28 | 1.46 | 1.00 | -- | -- | 3.33 | ?? | |
| T10 V | 2.23 | 1.77 | 1.35 | 1.00 | -- | -- | 2.16 | ?? | |
| T10 W | 2.64 | 1.75 | 1.33 | 1.00 | -- | -- | 2.55 | ?? | |
| T10 X | 2.64 | 1.61 | 1.23 | 1.00 | -- | -- | 2.55 | ?? | |
| T10 Y | 2.88 | 1.74 | 1.33 | 1.00 | -- | -- | 2.78 | ?? | |
| T10 Z | 3.42 | 2.28 | 1.46 | 1.00 | -- | -- | 3.51 | ?? |
Notes From Chart
1.
All Weights are approximate, but are as accurate as possible.
2. tr = tranny weight
3. tc = torque converter weight
4. Transmission weight without torque converter
or fluid
5. sb = small block tc weight
6. bb = big block tc weight
7. AOD overdrive ratio is sometimes listed
as 0.675:1
8. SROD indicates single rail overdrive
9. When SVO was closing them out, they rated
the SROD at 265 ft-lbs
10. WR C6 is a SVO Wide Ratio
C6
11. WR AOD is a SVO Wide Ratio
AOD
12. E4OD is Fords Heavy Duty AOD tranny
- torque rating (strength) of a tranny is based on:
- 1st gear ratio
- mainshaft - to - countershaft-centerline distance (T5: 77mm)
- width of gears
- Note: ALL T5's use ATF...yes thats right good ol' Mercon Dextron II / III ATF. This is due to the fact it has very tiny oil transfer holes to lube the needle bearings...using normal gear oil (75w90 etc...) would be like running your tranny dry...definately not a good thing to try :)
- other T5's are available such as the popular T5 Z which is basically the same as the 93 Cobra - 95 T5 except the torque capacity is upped to 330lbs-ft due to the new first gear 2.95 vs the older 3.35
- gearing for the T5 Z is 2.95/1.94/1.34/1.00/0.63
- also the T5 Z's have a steel input bearing retainer vs the aluminum one usually used
- Note: the SN95 style T5's bearing retainer is 17mm longer than the fox body's T5
- Note: older weaker T5's can be upgraded with some of the SVO Heavy Duty gear-sets available (p 84 of 97 SVO catalog)
- Also available is the 95 Cobra R Tremec 5 speed Heavy Duty Transmission (M-7003-R58)
- can be used in both Fox's as well as SN95's
- gear ratios are 3.27/1.98/1.34/1.00/0.68 and is rated at 350 lbs-ft
Evolution of the Mustang's Borg-Warner T5
- T5 first appeared in Mustangs in 1983.5 and left with the 5.0 at the end of 1995 model year
- 1983.5 - 1984's Close Ratio T5 gear ratios are 2.95/1.94/1.34/1.00/0.73 TQ capacity is 265 lbs-ft
- in 1985 ( -1989) the T5 was upgraded to the 'World Class T5' improvements include:
- tapered roller bearings on the countershaft
- caged needle bearings under 1st, 2nd, and 3rd gears on the mainshaft
- double synchronizers on 1st and 2nd
- steel blocker rings with friction linings on 3rd and 4th
- torque capacity remains at 265 lbs-ft because of the new 1st gear ratio being 3.35 vs the 83.5-84's 2.95
- <new gear ratios include (85-89 T5's) 3.35/1.93/1.29/1.00/0.68 TQ capacity is 265 lbs-ft
- in 1990 the T5 was upgraded again with the following improvements:
- 4615 alloy steel for the cluster & 3rd gear
- 4620 alloy steel for 2nd gear
- a coarser pitch was used on 2nd and 3rd improving strength
- these upgrades upped the torque capacity to 300 lbs-ftdespite the 3.35 1st gear
- (90-93) gear ratios are 3.35/1.93/1.33/1.00/0.68 TQ capacity is 300 lbs-ft
- for 1993 Cobra's the T5 was further upgaded with: (upgraded T5's found in 93Cobra's and on till 95)
- stronger tapered roller bearing to replace the std needle bearings between the input and mainshaft
- the above mod gives better alignment to the gears thus improving durability
- torque capacity is upped to 310 lbs-ft
- (93 Cobra-95) gear ratios are 3.35/1.93/1.33/1.00/0.68 TQ capacity is 310 lbs-ft
- for the 94 Cobra the aluminum bearing retainer was swapped for a steel imput bearing retainer
- All Tremec versions accept T5 style shifter *handles* (the shifter is unique) and use small block Ford pilot bushings. All versions use have a T5 input shaft length but the TKO requires the use of a GM style 26 spline clutch disc and a C6 output yoke (included).
- At various times, Tremec has claimed the STD and HP models are good for 400 or 425 ft-lbs and the 480 to 500 ft-lbs for the TKO. Take these numbers (and the ones cited for the other transmissions) with a grain of salt.
3 versions of the Tremec 3550 tranny:
TR3550 STD - 350 ft-lbs?, long throw shifter,
T5 style 1 1/16" diameter, 10 spline input
T5 output (yoke not included)
TR3550 HP - same as STD but with short throw shifter
TR3550 TKO - claimed 500 ft-lbs, short throw shifter,
GM style 1 1/8" diameter, 26 spline input,
C6 style 31 spline output (comes with C6 yoke),
improved synchros and blocker rings
Year Model/Optn 1st 2nd 3rd 4th 5th 6th Final ---- ------------- ---- ---- ---- ---- ---- ---- ----- 1993 Manual/M28 3.36 2.07 1.35 1.00 0.80 0.62 2.73 (GU2) 1993 Manual/M29 2.97 2.07 1.43 1.00 0.80 0.62 3.23 (GU4) 1994 Manual/MN6 2.66 1.78 1.30 1.00 0.74 0.50 3.42 (GU6) The 95's have the same ratios as the 94's. Aside from the CAGS provision and different gearing/input shaft (on the post 93's), all of the 6-speed transmissions are basically the same. Because of differences in the ratios, the torque capacities are different for each model. The shorter the tranny gear (higher numerically), the less torque it can handle. Note that these ratings from GM can be are considered conservative as they are most likely measured at normal load over 100,000 miles: Year Model/Optn Torque Capacity ---- ---------- --------------- 1993 Manual/M28 360 lbs-ft 1993 Manual/M29 400 lbs-ft 1994 Manual/MN6 450 lbs-ft According to the Camaro technical reference page on the WWW, these are the ratios by year and option: Borg Warner T-56 Ratios 1993 3.36 2.07 1.35 1.00 0.80 0.62 (std) 1993 2.97 2.07 1.43 1.00 0.80 0.62 (G92) 1994 2.66 1.78 1.30 1.00 0.74 0.50 1995 2.66 1.78 1.30 1.00 0.74 0.50 According to these ratios, the later years would be a closer choice. It seems that the higher the first gear is, the stronger the box is, probably because of the lower torque multiplication, but I don't know. There were varying torque ratings between the above boxes. I don't remember them now, but any of them would provide plenty of range.
Sources:
1992, 1996 & 1997 SVO Catalogs, Muscle Mustangs & Fast Fords Nov 96 issue,
Mathis's Mustang Performance Handbook vol. 1, Cars & Parts Magazine's
Catalog of Mustang ID Numbers 1964.5 - 1993, WOT, Dan Jones, Trevor
Lee,