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over drive trans

  1. Drivetrain & Performance
    I am thinking of going with an overdrive trans for my 72 nova. i have the GM 350 h.o. crate motor with a 12 bolt posi rear end. the rear end has richmond 355 gears in it. horsepower is probably about 350ish. can anyone recommend an overdrive trans that can handle the power? i'm new to auto...