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    1. #1
      Join Date
      Feb 2014
      Location
      SoCal
      Posts
      308
      Country Flag: United States

      Rear diff ratio recommendations

      1967 Gto
      474 roller motor ported cast iron heads
      All the aftermarket goodies
      600lb tq
      450-480hp
      Turbo 400
      275/35r18 rear tires



      Purely street. No drag

      Looking to have a 12 bolt built. I was thinking 3.27-3.55. I'm told my 10 bolt will break.





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