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12 bolt

  1. Brand new 12 bolt whining

    Drivetrain & Performance
    This past weekend I put an all new 12 bolt and I've noticed that it whines whenever I let off the throttle. It has at maximum 25 miles on it. Is this normal during the break in procedure or is this something to be concerned about?
  2. PLEASE HELP!!! REAR END PROBLEM 12 Bolt 72 nova

    Drivetrain & Performance
    hey, i just bought a 72 nova and when i bought it the guy said that the rear pinion bearing was going bad and just the other day i saw that the seal was broken and leaking fliud. the car vibrates between like 50-65mph i am going to try the fix myself, although i have never done any rear end...