| 4 Speed Transmission | ||||
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| Muncie Transmission ID and Ratio Guide |
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| Series | Gear Ratio 1st, 2nd, 3rd, 4th |
Spline Input | Grooves Input | Cluster Pin | Tooth Count Input | Tooth Count 4th Cluster | Output Spline | |||
M-20 wide ratio 63-65 |
2.56 | 1.91 | 1.48 | 1.00 | 10 |
none |
7/8 |
24 |
29 |
27 |
M-20 wide ratio 66-70 |
2.52 | 1.88 | 1.46 | 1.00 | 10 |
2 |
1" |
21 |
25 |
27 |
M-20 wide ratio 71-74 |
2.52 | 1.88 | 1.46 | 1.00 | 26 |
2 |
1" |
21 |
25 |
32 |
M-21 close ratio 63-65 |
2.20 | 1.64 | 1.28 | 1.00 | 10 |
1 |
7/8 |
26 |
27 |
27 |
M-21 close ratio 66-70 |
2.20 | 1.64 | 1.28 | 1.00 | 10 |
1 |
1" |
26 |
27 |
27 |
M-21 close ratio 71-74 |
2.20 | 1.64 | 1.28 | 1.00 | 26 |
1 |
1" |
26 |
27 |
32 |
M-22 close ratio 65-69 |
2.20 | 1.64 | 1.28 | 1.00 | 10 |
none |
1" |
26 |
27 |
27 |
| M-22 close ratio 70-74 | 2.20 | 1.64 | 1.28 | 1.00 | 26 |
none |
1" |
26 |
27 |
32 |
| Borg Warner Transmission ID and Ratio Guide |
| Series | Gear Ratio 1st, 2nd, 3rd, 4th |
Spline Input | Groove Input | Output Spline | |||
T-10 Close Ratio - 57-62 |
2.20 |
1.66 |
1.31 |
1.00 |
10 |
none |
16 |
T-10 Close Ratio - 62-65 |
2.20 |
1.64 |
1.31 |
1.00 |
10 |
none |
16 |
T-10 Wide Ratio - 61-62 |
2.54 |
1.92 |
1.51 |
1.00 |
10 |
1 |
16 |
T-10 Wide Ratio - 62-65 |
2.54 |
1.89 |
1.51 |
1.00 |
10 |
1 |
16 |
| T-10 Close Ratio - 64-65 | 2.20 |
1.64 |
1.31 |
1.00 |
10 |
3 |
27 |
| (HI Nickle) | |||||||
| ST-10 - 74-95 | 2.43 |
1.61 |
1.23 |
1.00 |
26 |
2 |
32 |
| ST-10 - 74-95 | 2.64 |
1.75 |
1.33 |
1.00 |
26 |
3 |
32 |
| ST-10 - 74-95 | 2.88 |
1.91 |
1.33 |
1.00 |
26 |
4 or 5 |
32 |
| ST-10 - 74-95 | 3.42 |
2.28 |
1.46 |
1.00 |
26 |
6 |
32 |
