Work Stock:
Stock OEM turbochargers, water injection prohibited, hanging weights prohibited.
Hot Work Stock:
Street turbochargers that plug no larger than 2.55, water injection prohibited, hanging weights prohibited, licensed for street, DOT tires.
2.5 Street Diesel/2.6 Smoothbore:
Single turbo, 2.5 inch maximum inducer bore, turbocharger bushings prohibited or 2.6 smoothbore turbo, water injection prohibited, bolt in, removable solid rear suspension bars permitted, receiver style hitch required, hanging weights permitted.
2.6 Street Diesel:
Single turbo, 2.6 inch maximum inducer bore, turbocharger bushings prohibited, water injection prohibited, bolt in, removable solid rear suspension bars permitted, receiver style hitch required, hanging weights permitted.
3.0 Smoothbore Diesel:
Single turbo, 3.0 smoothbore, water injection prohibited, solid rear suspension, receiver style hitch required, drive shaft u-joint shields required, hanging weights permitted.
3.6 Single Turbo / Super Pro Multiple Turbo:
These classes will pull together, with 300# weight difference. Other handicaps may be used if there is an agreement of the majority of both classes. The 3.6 (3.6) Single Turbo is based on stock chassis and the Super Pro Multiple Turbo (SP) is based on a tube frame.
Street Legal Semis:
Road-ready, street-licensed semis.
See our DIESEL Motorsports sled pulling rule book for specific class guidelines.