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NMCA Tech Department Makes Mid-Season Holley EFI Factory Super Cars Parity Adjustment

July 5, 2023 - The NMCA Tech Committee made a Mid-Season parity adjustment today in Holley EFI Factory Super Cars based on performance numbers from the first three events of the 2023 season.  The Tech Department reduced the supercharger overdrive of the 2019 Ford Cobra Jet Iron Block combination by changing the upper supercharger pulley from 3.500 inches to 3.750 inches.  This rule change is effective immediately.  
2023 NMCA Rule Amendments can be found here:
Rules are posted on the NMCA website rules page:
Rule Requests or Questions should be directed to [email protected]

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