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  1. S

    Gear Ratio upgrade for 69 GTX

    I just got a 69 GTX it's 440 4 barrel with a 727 auto trans. The car has 3.23:1 rear end gear ratio. I bought it knowing it had a rear end noise. The repairs require basically redoing most the rear end. My question is should I keep it the stock 3.23 or increase it? The shop where the rear...
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