NHRDA - National Hot Rod Diesel Association - Diesel Drag Race Rules!
This is the link to the NHRDA web site rules section. The only thing omitted is that the Sportsman ET bracket class has no ET restrictions. Conceivably, a 7 second dragster could be running against a 19 second truck.
Jim
NHRDA Top Diesel
» Heads-Up class with a 4/10ths Pro Tree, Laddered by ET, Auto Start on
» No weight limitations
» No tire limitations
» No wheelbase limitations
» Chassis must be certified for 9.99 or quicker
» Must meet NHRA tech and safety requirements for MPH and ET
» Must meet NHRA and/or IHRA licensing requirements for MPH and ET
NHRDA Pro-Stock Presented by:
» Heads-Up class with a 4/10ths Pro Tree, Laddered by ET, Auto Start on
» Minimum weight: 2350 lbs (w/ Driver) ±1%
» No tire limitations
» Maximum wheelbase: 125"
» Chassis must be certified for 9.99 or quicker
» Must meet NHRA tech and safety requirements for MPH and ET
» Must meet NHRA and/or IHRA licensing requirements for MPH and ET
NHRDA Pro-Street
» Heads-Up class with a 4/10ths Pro Tree, Laddered by ET, Auto Start on
» Minimum weight: 4500 lbs (w/ Driver) ±1%
» No tire limitations
» Tube chassis prohibited
» Must meet NHRA tech and safety requirements for MPH and ET
» Must meet NHRA and/or IHRA licensing requirements for MPH and ET
NHRDA Super-Street
» Heads-Up class with a 4/10ths Pro Tree, Laddered by ET, Auto Start on
» 2wd Minimum weight: 5000 lbs (w/ Driver) ±1%, slick tires permitted
» 4wd Minimum weight: 6000 lbs (w/ Driver) ±1%, DOT approved tires required
» Tube chassis, back halved, 4-link, 3-link style rear suspension prohibited
(Traction/Ladder Bars allowed)
» Hood Stacks prohibited
» Must have OEM Style transmission (Lenco, Liberty, Bruno, Clutchflite, Danco,
or similar prohibited )
» Engine must be forward of OEM Firewall
» Fuel Tank must be in stock location.
» Battery(s) must be forward of OEM Firewall
» Must meet NHRA tech and safety requirements for MPH and ET
» Must meet NHRA and/or IHRA licensing requirements for MPH and ET
NHRDA Sportsman ET Presented by:
» Bracket class with a Sportsman Tree, Laddered by Reaction Time, no Auto Start
» Helmet require if faster than 13.99 (Note: Some track require helmets for ALL racers)
» Must meet NHRA tech and safety requirements for MPH and ET