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 15 categories, or eliminators, each 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.
Funny Cars routinely run in the 4.0-second range and are capable of speeds in excess of 320 mph. Funny Cars are powered by the same supercharged and fuel-injected 500-inch engines as Top Fuel dragsters. Funny Cars are also similar to Top Fuel dragsters in that they do not use a transmission but rather transmit power to the huge Goodyear rear slicks through a multistage clutch assembly that is activated by timers.
