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Overdrive Transmission Mainshaft Gears

To affect the ratio change, the three stock main shaft gears must be replaced. They're also machined from superior steel and feature fresh bushings (foreground).
Overdrive Transmission - Mopar Overdrive Conversion Kit

 To affect the ratio change, the three stock main shaft gears must be replaced. They're also machined from superior steel and feature fresh bushings (foreground).  View Related Article

 

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