General Motors transmissions
(→M20 or M21/22?) |
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====M20 or M21/22?==== | ====M20 or M21/22?==== | ||
| − | Put the transmission in 1st gear. Turn the | + | Put the transmission in 1st gear. Turn the input 10 times while counting how many times the output turns. If it turns 2.5 times, its an M20 (2.52 1st gear). If it turns 2.2 times, its an M21 or M22 (2.20 1st). |
If you determine it's a close ratio M21 or M22, remove the side cover and look at the angle of the gear teeth (refer to photo above) to see if it's a M22 or not. | If you determine it's a close ratio M21 or M22, remove the side cover and look at the angle of the gear teeth (refer to photo above) to see if it's a M22 or not. | ||
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