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GM Automatic Transmision Gear Ratios
| Transmission Type | 1st Gear | 2nd Gear | 3rd Gear | 4th Gear |
| Power Glide | 1.76 or 1.82 | 1.00 | ||
| TH350 | 2.52 | 1.52 | 1.00 | |
| TH400 | 2.48 | 1.48 | 1.00 | |
| 700R4 | 3.06 | 1.63 | 1.00 | 0.70 |
| 200R4 | 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 |
* The 4L60E and 700R4 are basically the same transmision except
that 4L60E is electronically controlled while 700R4 is not.
The 4L60E is hardly used for in non-EFI retrofit
applications because a MUCH stronger 4L80E can be used with the
same amount of difficulty and cost. Both the 4L60E and
4L80E require computer controllers from the aftermarket.
Manual Transmison Gear Ratios
Soon to come