Calculators
| 1st | 2nd | 3rd | 4th | 5th | 6th | |
| Powerglide (sm. blk) | 1.76 | 1.00 | ||||
| Powerglide (big blk) | 1.82 | 1.00 | ||||
| Turbo 350 | 2.52 | 1.52 | 1.00 | |||
| Turbo 400 | 2.48 | 1.48 | 1.00 | |||
| Turbo 700R-4 | 3.06 | 1.63 | 1.00 | 0.70 | ||
| M20 (1963-65) | 2.56 | 1.91 | 1.48 | 1.00 | ||
| M20 (1966-74) | 2.52 | 1.88 | 1.46 | 1.00 | ||
| M21/M22 | 2.20 | 1.64 | 1.27 | 1.00 | ||
| Super T10 (S-code) | 2.43 | 1.61 | 1.23 | 1.00 | ||
| Super T10 (W-code) | 2.64 | 1.75 | 1.34 | 1.00 | ||
| Super T10 (P-code) | 2.43 | 1.76 | 1.47 | 1.00 | ||
| Super T10 (U-code) | 2.88 | 1.91 | 1.33 | 1.00 | ||
| Richmond 4+1 | 3.27 | 2.13 | 1.57 | 1.23 | 1.00 | |
| Richmond 6-speed (a) | 3.27 | 2.13 | 1.57 | 1.23 | 1.00 | 0.78 |
| Richmond 6-speed (b) | 3.01 | 1.88 | 1.46 | 1.19 | 1.00 | 0.62 |
| Borg Warner T56 | 2.66 | 1.78 | 1.30 | 1.00 | 0.74 | 0.50 |
| Borg Warner T56 | 3.36 | 2.07 | 1.35 | 1.00 | 0.84 | 0.62 |
| Borg Warner T56 | 2.97 | 1.94 | 1.35 | 1.00 | 0.84 | 0.62 |
| Borg Warner T56 | 2.97 | 2.07 | 1.43 | 1.00 | 0.80 | 0.62 |
| ZF 6-speed | 2.68 | 1.80 | 1.29 | 1.00 | 0.75 | 0.50 |
| Toploader (close ratio) | 2.32 | 1.69 | 1.29 | 1.00 | ||
| Toploader (wide ratio) | 2.78 | 1.93 | 1.36 | 1.00 | ||
| Toploader (overdrive) | 3.29 | 1.84 | 1.00 | 0.80 | ||
| 200-4R | 2.74 | 1.57 | 1.00 | 0.67 | ||
| 4L60E | 3.06 | 1.63 | 1.00 | 0.70 | ||
| 4L80E | 2.48 | 1.48 | 1.00 | 0.75 | ||
| Tremec 3550 | 3.27 | 1.98 | 1.34 | 1.00 | 0.68 | |
| T-5 (F-body) V8, 83-87 | 2.95 | 1.94 | 1.34 | 1.00 | 0.74 | |
| T-5 (F-body) V8, 88-92 | 2.95 | 1.94 | 1.34 | 1.00 | 0.73 | |
| T-5 (F-body) 83-87 | 3.35 | 1.99 | 1.33 | 1.00 | 0.68 | |
| T-5 (F-body) 88-92 | 3.97 | 2.34 | 1.46 | 1.00 | 0.79 | |
| Saginaw 3 speed (all) | 2.54 | 1.88 | 1.00 | |||
| Saginaw 4 speed (all) | 2.20 | 1.64 | 1.47 | 1.00 |
Installation Guides
& Technical Manuals
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Axle and U-Joint Identification
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Tech Videos
The technical information provided here is supplied as a resource for investigating product operation, installation, and troubleshooting. Many of these manuals and videos come directly from the manufacturer, so Seven Springs Customs / Complete Off Road can not guarantee 100% accuracy of the information provided. Please remember that with all automotive work, there is the chance that you may run into issues not discussed in these installation manuals, write-ups, or videos.
If you don't find the information you need here, give us a call at 563-583-5363 and we will do our best to answer your questions or figure out a solution to your problem.
Axle and U-Joint Identification