Rule Clarification For Modified “R.W.Y.B” Trucks Utilizing Blowers/Pro Chargers


  • Maximum supercharger size: 14-71

    • 19-inch rotor case length, 11.25-inch rotor case width rotor case width to be measured internally

  • Note: For those utilizing 8-71 blower the following dimensions used:

    • 16-inch rotor case length and 11.25-inch rotor case width to be measured internally.

  • Screw type blowers are not permitted.

  • Variable multi-speed supercharger devices prohibited.

  • Pro Chargers are allowed as well maxim size of F-3R-130


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