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  1. M

    Rear end gear with 727?

    Hey guys, still thinking out my 71 charger build. I’m still between a 440 and 6.4 but my question is if I go with a 727 would I be able to run 80mph without killing the motor with rpm’s. I think the car has 200 something rear end in it now. Would a 727 be ok or should I swap out to a 4 or 5 speed?
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