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oem tranny upgrade

  1. Drop In Bolt Up Tranny Upgrade?

    Transmission & Drive line
    Greetings fellow forum members, I recently purchased a 1984 GMC Caballero. Nice clean original car. Traded my Harley for it. It seems like it needs a fourth/fifth gear and or overdrive because with the stock 3 speed it seems like I'm going to kill the engine trying to keep up at turnpike...
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