Trans Am rules require that vehicles be constructed with a purpose-built tube frame chassis. The top chassis builders include Riley & Scott, Roush, Weaver, Selix-Weaver, Hoerr and Rocketsports. The bodies are made of composites, such as carbon fiber, Kevlar and fiberglass. The rules stipulate that the cars should maintain the recognizable external features of the manufacturer's model while providing flares necessary to keep the tires inside the bodywork. SCCA Pro Racing uses body templates to ensure the shape of cars is within designated tolerances. Cars are required to use the stock windshield or an approved alternative, which has to be mounted in the original location and at the original angle. The rules also dictate the use of the stock taillights, which are often the only production parts on the vehicles. The popular models are the Chevrolet Camaro and Ford Mustang; however other vehicles eligible for the series include the Chevrolet Corvette and Lumina, Dodge Daytona, Mercury Cougar, Pontiac Grand Prix and Trans Am, Oldsmobile Cutlass Supreme and Toronado and Buick Regal. Car styles cannot be more than five years old. All cars are required to use an American-based engine. The rules allow a 335 cubic inch or 358 cubic inch 9:1 V8 engines with a car weight of 2700-lbs. Another option is a V6 with a 275 cubic inch engine weighing 2500-lbs. But the most popular choice is a 311 cubic inch motor. All options must be fitted with a 4150 Holley carburetor.

The thirteen race season began in February in Miami and is followed by a trip to Canada for race two at Mosport Park. Next, drivers compete at the Mid-Ohio Sports Car Course and then on a temporary circuit at Detroit. Teams travel to the west coast for round five at Portland International Raceway. On the calendar in early July are weekends at Des Moines and Cleveland, Ohio. The subsequent two events are in Canada at Toronto and Trois-Rivieres, Quebec. In August, the championship visits Watkins Glen International and Road Atlanta. The penultimate weekend of the championship is held at Road America, with the finale taking place September 18th in Dallas.

At the opening event of the 1994 Trans Am season, Tom Kendall in a Ford Mustang dominated qualifying and the race. Kendall’s performance caused the Sports Car Club of America to make adjustments to the Chevrolet Camaro and Ford Mustang to increase parity. Changes were made to the Camaro's splitter and rear spoiler in an effort to improve down-force. Teams competing with the Mustang were required to lower the hood.

Round two did not take place until May at Mosport, which gave the teams plenty of time to test the rule changes. Race day was sunny with unseasonably high temperatures – 29C/84F. There were twenty-five starters for the 40-lap event.