Aisin AR5
The Aisan AR5 is a five-speed manual transmission built by Aisin. It has an identical bolt pattern and dimension to the Toyota R154. It's found in various vehicles across GM along with its sister unit in Toyota.
Power Limit
Forum users report regularly pushing this transmission upwards of 400-450hp, which seems like the reasonably safe limit. For a stock LS, this reportedly holds up just fine.
Swaps
- LS Swaps - This transmission is only rated for 255ft/lbs of torque, but forum members have reported hammering it with north of 400hp / 300+ ft/lbs of torque.
- Ecotec Swaps - Because this is the transmission that comes in the Ecotec powered Saturn Sky and Pontiac Solstice, it is a great choice for ease of use (if the shifter lines up with your project).
- 1UZ-FE Swaps - Because of the identical bell housing bolts of the Toyota R154, it's commonly used for swapping 1UZ-FE engines to manual. There are kits available, including this one by XAT Racing
Applications
- 2007-2010 Saturn Sky
- 2005-2010 Pontiac Solstice
- 2005-2012 Chevy Colorado / GMC Canyon
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Note: the Solstice / Sky transmissions have different placements of the shifter than the Colorado / Canyon version.
Below
| Model | 1st | 2nd | 3rd | 4th | 5th | Rev |
|---|---|---|---|---|---|---|
| A GMX020 | 3.25 | 1.96 | 1.31 | 1.00 | 0.75 | 3.18 |
| B | 3.83 | 2.06 | 1.44 | 1.00 | 0.79/0.84 | 4.22 |
| C GMT355/345 | 3.75 | 2.26 | 1.37 | 1.00 | 0.73 | 3.67 |
| D | 3.83 | 2.33 | 1.44 | 1.00 | 0.79 | 4.22 |
| E | 3.95 | 2.33 | 1.44 | 1.00 | 0.79 | 3.92 |
| F | 4.31 | 2.33 | 1.44 | 1.00 | 0.79/0.84 | 4.22 |
| G | 5.15 | 2.78 | 1.51 | 1.00 | 0.83 | 5.04 |
| H | 5.15 | 3.10 | 1.71 | 1.00 | 0.83 | 5.04 |
Source: https://www.transmissiondigest.com/identifying-aisin-5-and-6-speed-transmissions/
