604 Gears

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  • wilke89k
    Junior Member
    • Sep 2017
    • 1

    #1

    604 Gears

    Looking for some help. I have a 604 late model with 4:11 rear end. Looking for a starting point on gears for a 3/8 mile and 1/2 mile track turning 6800 for rpm.Thanks!
  • CCHIEF
    Senior Member
    • Jul 2014
    • 399

    #2
    Try 5.34 on the half and 5.56 a 3/8. Or just walk up to someone running there..... and ask a few to get a feel and level of truth. Most guys will tell you if you don't seem to be a serious threat to their finish. If your getting left behind on starts, you don't have enough!

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    • DEKconsulting
      Senior Member
      • Apr 2015
      • 234

      #3
      560 on .5 mile and 621 on 3/8 will turn 6750 to 6800

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      • DEKconsulting
        Senior Member
        • Apr 2015
        • 234

        #4
        Also depends on driving style and track if it's fast and hooker up or slick an slow.

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