• The only material allowed for rear end components including yokes, hubs, drive plates and bearing supports is Steel unless specifically listed below.
   
• Housing
  • OEM rear ends must be stock steel
    (we reserve the right to refuse use of any rear end component with out reason)
  • Distance from center of rear end housing to the rear hubs left and right must be within one inch in length.
     
• Center Section (Carrier)
  • Must be steel
     
• OEM Ring and pinions
  • Any readily off the shelf available gears allowed
  • No custom ground or lightened gears
  • C-clip eliminators are optional
  • Welded spider gears or spool may be used if the original pin and carrier are maintained.
  • No ratchet, lockers, limited slip, torque bias, or aluminum center sections permitted.
• Axels
  • Full floating rear axle permitted
  • Heavy duty aftermarket axles allowed
  • Steel only
  • May not be gun drilled
     
• Gear Ratios  (Subject to change as needed)
  • Gear ratios and or Chip rule will be announced track to track.
  • Tracks 3/8 mile or smaller   the final drive cannot exceed 6.25
  • Tracks greater than 3/8mile and less then a mile final drive
    cannot exceed 5.25