Definition of Classes:
Stock Ford, GM, Dodge Classes:
The turbocharger is limited to a stock, OEM/Factory make-specific charger only. No Injectables. No After- Market Compressor Wheels Allowed.
- Small Single Class: 70mm turbo size and smaller. No Injectables.
- Large Single Class: 71mm turbo and greater. No Injectables.
- Small Multi turbo Class/Compound Class: 80mm turbo size and smaller. No more than two (2) turbochargers. No Injectables.
- Large Multi turbo Class/Compound Class: 81mm turbo size and greater. . two or more after market chargers. No Injectables.
Any use of Nitrous, Propane, and/or Water Meth.