American Stock Car Challenge
Affordable road-course racing for late model stock cars.
American Stock Car Racing (ASC Racing) is a series for late model stock cars competing on road courses in the United States. It offers a spec class (ASC) with standardized components to control costs, alongside an unlimited class (ASC-U) open to any stock car. The series aims to make competitive stock car racing accessible to teams with smaller budgets.
Quick Facts
- Spec engines allowed
- GM 350 ZZ4, GM 350 ZZ4 Fast Burn, Ford 351 Windsor, Dodge 360 Magnum
- Spec shocks
- Sealed shocks
- Prototype weight
- 2,600 lb / 1,179 kg
- Prototype horsepower
- Over 400 hp / 298 kW
- Prototype chassis basis
- 1979 Grand Prix
Facts from the source article.
Did You Know?
- The series was originally influenced by GT America in 1995.
- The National Auto Sport Association (NASA) sought an affordable Big Bore V8 race car for grassroots road racing.
- The prototype was a Chevy Silverado pickup finished in NAPA auto parts livery, financed by Rich and Betty Rogers.
Development
The prototype chassis was based on a 1979 Grand Prix, retaining the original brakes and suspension control arms to keep costs low. Weighing 2,600 lbs and producing over 400 horsepower, the vehicle was expected to be fast. Both drivers set fast laps that day, and the car exhibited predictable handling. During the session, an engine pulley came off, causing a loss of power steering in Turn 2; Kraus spun the car but avoided contact and ended the day's running.
A second test occurred three weeks later at Laguna Seca, where the truck's high-speed capabilities made it the fastest car on track. At the last minute, it entered a three-hour enduro that afternoon. Starting last, Kraus led by the end of the first lap and built a two-lap lead after one hour. The first pit stop cost the lead due to slow refueling and a tedious driver change.
Rich Rogers then drove conservatively, losing two laps to the leading BMW M3s. The second pit stop went better, losing only one additional lap. Former Trans Am driver Lou Lerner took over, three laps down, and matched earlier lap times. On the final lap, he passed the lead BMW for the lead, having made up all lost laps.
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