M20, M21 or M22?

musclecar fan · #1 08-01-2016, 10:40 PM

Can Anyone ID this by looking at the gears? M20, M21 or M22?

**L72Chevelle** · #2 08-01-2016, 10:49 PM

The two lines on the cluster gear would mean M20. Does it also have two lines on the input shaft?

**300deluxeL79** · #3 08-01-2016, 10:58 PM

not an M22...

musclecar fan · #4 08-01-2016, 11:02 PM

No lines, fine spline.

**Ls6 Ragtop** · #5 08-02-2016, 12:02 AM

That's an M20 wide ratio. Count the teeth on the input gear. Should be 21 teeth which identifies it as 2.52 to 1 wide ratio 4 speed.
That's a replacement input shaft which was available with no spline identification or "rings" located on the spline.
Chris