Pratt & Miller Engineering Teams with GM to Race the Cadillac CTS-V
March 12, 2004
Friday 12 March 2004.../NEW HUDSON, Mich - Pratt & Miller Engineering is extending its portfolio of race programs with the debut next week of the Cadillac CTS-V in the opening round of the Sports Car Club of America’s 2004 Speed GT World Challenge.
This series for production-based race cars opens March 19 in Sebring, Fla. The 50-minute sprint race is one of the events in the Mobil 1 12 Hours of Sebring weekend.
Pratt & Miller has assisted GM Racing in transforming Cadillac’s CTS-V high-performance sport sedan into a competitive race car from the outset of development and is providing the team and infrastructure for the race program. In the seats of the Cadillac CTS-Vs this weekend will be two sports car racing veterans, Italian driver Max Angelelli and Andy Pilgrim of Delray Beach, Fla.
Pratt and Miller is a full-service engineering and fabrication supplier to the automotive and aerospace industries. The company’s world-class capabilities have been honed and proven with such successes as the Corvette Racing program. This team of specially developed Corvette C5-Rs won two straight GTS-class victories in the 24 Hours of Le Mans, scored an overall victory in the 24 Hours of Daytona, and has won three successive manufacturer and team championships in the American Le Mans Series. Pratt & Miller is again running GM’s Corvette C5-R race team in this year’s American Le Mans Series (ALMS).
“Creating a race car from the production CTS-V is an exciting challenge for us,” said Lynn Bishop, co-engineering director at Pratt & Miller, and team manager of the Cadillac CTS-V racing project. “We work with some of the most advanced engineering tools available anywhere, and this program has provided some unique opportunities to stretch their capabilities, as well as our skills as engineers and fabricators.”
Unlike the Corvette C5-Rs, the Cadillac CTS-V cars compete in short-distance sprint races, and the rules for the Speed GT series require that the cars remain much closer to the specifications of their production counterparts than is the case with the GTS-class Corvettes.
This presented a different but equally challenging set of developmental problems for the Pratt & Miller and GM Racing engineers. Pratt & Miller used its computational fluid dynamics (CFD) engineering tools to test and optimize aerodynamic performance, and ADAMS (automated dynamic analysis of mechanical systems) computer modelling to test and fine-tune suspension and chassis systems.
Race-ready, more than 70 percent of the Cadillac CTS-V is made up of components also found on the production car, including the 5.7-liter, all-aluminum V-8 engine, front and rear suspensions, and the steering system. While the OHV V-8 engine remains primarily stock, special tuning by GM Powertrain engineers has added more than 100 horsepower to the stock unit’s 400 hp output, and also increased its rev limit from 6,000 to 7,600 rpm.
Racing in the Speed GT World Challenge, the Cadillac CTS-V team will compete at tracks across North America in 2004. The circuits include Sebring, Florida; Lime Rock Park, Connecticut; the Mid-Ohio Sports Car Course; Sonoma, California’s Infineon Raceway; Portland International Raceway in Oregon; Mosport International Raceway in Ontario; Wisconsin’s Road America; Road Atlanta in Georgia; and Mazda Raceway Laguna Seca, Monterey, California.