Top Fuel, Funny Car, and Pro Stock are just three of the more than 200 classes of vehicles featured in NHRA competition. Those classes are grouped into 12 categories, or eliminators, each strictly governed by NHRA rule makers. Class eligibility is based on various requirements and specifications, including type of vehicle, engine size, vehicle weight, allowable modifications, and aerodynamics.
The four Professional categories are Top Fuel, Funny Car, Pro Stock, and Pro Stock Motorcycle. They, along with Top Alcohol Dragster and Top Alcohol Funny Car and the three “Super” classes – Super Comp, Super Gas, and Super Street – feature a single class of vehicle in heads-up competition. The remaining categories – Comp, Super Stock, and Stock – are made up of a variety of classes and use a handicap starting system to equalize competition… More info