Overdrive 3 Speed
My 62 3/4 ton truck has .456 rear gears and I would like to slow the motor down some at highway speeds. It has a 3 speed (SM318)transmission , I have access to a SM319 transmission with overdrive and was wondering if anyone has done a similar swap and if it was worth it. I AM going to keep my column shifter and am not interested in floor shift conversions. Thanks for any input. Dave
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