Spicer 7231-A (auxiliary)
7231-A (auxiliary) is a 3-speed manual transmission created by Spicer and used in Chevrolet and GMC cars.
Auxiliary transmissions are used in combination with the main transmission where extreme grades, big payloads and widely varying operating conditions require a broad range of closely spaces, even gear steps.
Two power take-off locations on both sides of the transmission facilitate easy accessory power hookups. All gears are helical constant mesh for easier and quieter shifting. Shafts and gears are precision machined and carburized for resistance to wear.
Usually this transmission requires 8 pints of lubricant.
| Parameter | Value |
|---|---|
| Type | Manual |
| Gears forward | 3 |
| Gears forward ratios | 2.14:1, Direct, 0.74:1 |
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