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    Results 1 to 5 of 5
    1. #1
      Join Date
      Jan 2008
      Location
      Elk Grove, CA
      Posts
      179

      What Back Space?

      Ok, I have a question that Ive been meaning to ask. I have a 69 Camaro with a 10 bolt rear end which measures 60 width. I also have a 12 bolt rear end out of an earlier Nova that measures 57.57 width that I was planning on using. My question is: what back space would be appropriate for the widest wheel for the rear?



    2. #2
      Join Date
      Aug 2004
      Location
      Pittsboro, NC
      Posts
      186
      Decide on what size tire you want to run, buy the tires and mock them with rear diff in car. Measure with a tool like wheelrite, etc. This is the only proper way to get exact fit as all these cars can be off 1/4 to 1/2" which can make the difference between clearing and rubbing.

    3. #3
      Join Date
      Nov 2006
      Location
      Mountain Springs, Texas
      Posts
      3,925
      Country Flag: United States
      Stock Camaro would be 9.5” with a 5.5” backspacing.

      Subtract the width of the new rear end from the original. Divide the difference by 2. Subtract that number from the 5.5” backspacing.

      60-57.75=2.25
      2.25/2=1.125
      5.5-1.125=4.375 backspacing

      Don’t forget to adjust for any offset introduced by non stock brakes.

      If you want to give yourself a little wiggle room add .25” to the backspacing so you can adjust with a small spacer.

      Don
      1969 Camaro - LSA 6L90E AME sub/IRS
      1957 Buick Estate Wagon
      1959 El Camino - Ironworks frame
      1956 Cameo - full C5 suspension/drivetrain

    4. #4
      Join Date
      Nov 2008
      Location
      Lawrenceburg, TN
      Posts
      4,057
      Country Flag: United States
      Quote Originally Posted by dhutton View Post
      Stock Camaro would be 9.5 with a 5.5 backspacing.

      Subtract the width of the new rear end from the original. Divide the difference by 2. Subtract that number from the 5.5 backspacing.

      60-57.75=2.25
      2.25/2=1.125
      5.5-1.125=4.375 backspacing

      Dont forget to adjust for any offset introduced by non stock brakes.

      If you want to give yourself a little wiggle room add .25 to the backspacing so you can adjust with a small spacer.

      Don
      ^^^^ yep

    5. #5
      Join Date
      Jan 2008
      Location
      Elk Grove, CA
      Posts
      179
      Quote Originally Posted by dhutton View Post
      Stock Camaro would be 9.5 with a 5.5 backspacing.

      Subtract the width of the new rear end from the original. Divide the difference by 2. Subtract that number from the 5.5 backspacing.

      60-57.75=2.25
      2.25/2=1.125
      5.5-1.125=4.375 backspacing

      Dont forget to adjust for any offset introduced by non stock brakes.

      If you want to give yourself a little wiggle room add .25 to the backspacing so you can adjust with a small spacer.

      Don
      I agree, that is great information! Thank you