engine setback

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  • dfhotlm33c
    Senior Member
    • Apr 2011
    • 224

    #1

    engine setback

    Our rules allow for 8" of engine setback. We have already fabricated bracketry, etc. Was just curious what advantage we would be looking at over a standard 6" of setback. Steel block, aluminum head.
  • Matt49
    Senior Member
    • Jun 2007
    • 3123

    #2
    Originally posted by dfhotlm33c View Post
    Our rules allow for 8" of engine setback. We have already fabricated bracketry, etc. Was just curious what advantage we would be looking at over a standard 6" of setback. Steel block, aluminum head.
    1) Easier to get desired rear percentages without being overall over weight
    2) (and maybe more importantly) Decreased moment of inertia

    Comment

    • 7uptruckracer
      Senior Member
      • May 2009
      • 1336

      #3
      Better Polar Moment.

      Comment

      • zeroracing
        Senior Member
        • May 2007
        • 1014

        #4
        I would go through the work to move it back, take every advantage you can.

        Comment

        • jedclampit
          Senior Member
          • Mar 2008
          • 613

          #5
          Shorter drive-shaft!

          Comment

          • SuperEight
            Senior Member
            • Jul 2014
            • 318

            #6
            Originally posted by dfhotlm33c View Post
            Our rules allow for 8" of engine setback. We have already fabricated bracketry, etc. Was just curious what advantage we would be looking at over a standard 6" of setback. Steel block, aluminum head.
            Better handling, faster car, if you like that kinda thing.
            Left 4M and Dirt Late Model racing, 04/12/2016 @12:06AM.

            Comment

            • dfhotlm33c
              Senior Member
              • Apr 2011
              • 224

              #7
              Absolutely. Was just curious how significant the changes would be. We also have no weight rule. Last year we were at 2230 with me in the car, 15 gal of gas and 65 pounds of ballast across the back. That got us 54% rear. Was just curious whether it was possible to get our percentages possibly without even needing ballast...

              Comment

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