Description
PG1. Early Powerglide / 3 Speed Standard Speedometer Driven Gears. Comes in 20, 21, 22, 24 and 25 tooth. The 20 and 21 tooth Powerglide gears have a .785″ diameter head and the 22, 24 and 25 tooth three speed standard gear has a .865″ diameter head. The overall length runs 2.890″ to 2.900″. Also fit some other early GM automatic transmissions. If your speedometer is still off with one of these gears installed it can be corrected with a ratio adapter.
