Understanding The Cars And Classes
Stock Appearing

Stock Appearing

Stock Appearing Overview

There are many classes based on production cars or trucks that utilize much of the vehicle's production components, but have been modified to varying degrees specifically for drag racing. The most popular are the NHRA Stock Eliminator and Super Stock classes. This is where many iconic Dodge and Plymouth muscle cars compete along with the new Dodge Challenger Mopar Drag Pak. The NHRA Stock and Super classes race off a full, five-tenths tree and there are numerous categories within these classes that have individual indexes based on shipping weight and horsepower, by which the racers qualify. Some classes don't allow driver aids such as delay boxes or trans brakes, while others are more open.

In other stock bodied classes, the cars may or may not incorporate a variety of lightweight body panels and stripped down interiors. Most racing sanctioning bodies require race seats/belts, roll cages (with complexity appropriate to the ET and MPH the car will run) safety nets, master electrical disconnect switch, fuel cells, and other safety equipment mandated by the race track and/or sanctioning body. Chassis may be modified to fit larger rear tires while the front and rear suspensions are drag-race specific and may be modified from the stock setup.

Every stock sub-class has its own rules for engine, drivetrain and chassis modifications, tire size, weight and horsepower. Classes exist for cars from import 4-cylinder, front wheel drive hatchbacks all the way up to HEMI® V-8 powered American muscle sedans.

A category growing popularity is the Drag Radial class such as Outlaw x275 and Outlaw 10.5. These are relatively new to the drag racing scene, but offer some incredibly exciting and sophisticated racing. Competitors are laying down up to 1000 horsepower to a tire with dimensions that might only be 28" x 11.5". Like many other classes, there are certain rules and guidelines racers must adhere to in order to compete.

Stock/Stock Eliminator

Stock Eliminator Race Car

  • Similar to Super Stockers
  • Rules regarding engine modifications and body alterations are much stricter
  • Cars are handicapped using an index system, and the breakout rule is enforced unless during a heads-up or class run-off eliminations
  • Tires are limited to 9-inch-wide rear slicks
  • As fast as 8.10 seconds @160 mph

Super Stock

Super Stock Race Car

  • Based on production passenger vehicles
  • Are highly modified back-half race cars in many cases
  • Cars are handicapped using an index system, and the breakout rule is enforced unless during a heads-up or class run-off eliminations
  • As fast as 7.80 seconds @170 mph

Super Street

Super Street Race Car

  • Compete on a fixed 10.90-second index
  • Run as close to the index without going over
  • Trap speed around 120 mph
  • Racers use full electronics and are all about cutting the light

Back Half/Big Tire

Back Half/Big Tire Race Car

  • Modified chassis and suspension, 15" slick tires
  • Race motor/race trans/race gas
  • Delay box and transbrake are common
  • 8.5 @ 165 to 9.9 @ 134

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