For 50 years, the Camaro SS and the quarter-mile have stuck together like a drag slick on a well-prepped starting line, and Chevrolet is pushing that winning legacy forward with the new Camaro SS Drag Race Development Program and the 2017 COPO Camaro.
The Camaro SS Drag Race Development Program explores the quarter-mile capability of the Gen Six Camaro with concept parts designed to support 10-second elapsed times in a production-based model. The COPO Camaro offers the first look at the factory-built race car program for 2017.
“From sportsman classes to the pro ranks, Camaro has been one of the most popular cars ever to launch down the drag strip,” said Jim Campbell, GM U.S. vice president of Performance Vehicles and Motorsports. “For 50 years Chevrolet has supported Camaro drag racers and these new SEMA vehicles demonstrate our commitment to the sport, with parts development and the advancement of the historic COPO Camaro program.”
That commitment has helped put Camaro drivers in the winner’s circle, including seven class wins out of eight NHRA Stock classes and a Super Stock class win at the 2016 Chevrolet Performance U.S. Nationals in Indianapolis. COPO Camaro racer Jeff Lopez was the Stock Eliminator champion.
Drag Race Development
The Camaro SS Drag Race Development Program was created to develop performance parts for 2016+ Camaro models. A test vehicle was built to mimic the typical stair-step enhancements many amateur racers make with their production Camaro SS models, including swapping the differential for a numerically higher ratio and adding horsepower-building components such as a cam-and-heads package to push the SS’s LT1 engine to more than 530 horsepower — and about 600 horsepower with a power adder.
“More than simply achieving quick ETs in the Camaro, we are exploring the supporting components that help the car to go quicker with great durability,” said Mark Dickens, director, Performance Variants, Parts and Motorsports Engineering. “We’ve tested stronger axles and chassis components aimed at improving launch and traction attributes.”
Engineers have made more than 100 passes down the quarter-mile with the development car, including the evaluation of DOT-approved racing and slick tires and a variety of drivetrain combinations.
The engineering team also tested a higher-stall torque converter for greater launch capability, increasing the stall speed to 4,200 rpm with the LT1 engine. That’s approximately 30 percent higher than the stock converter. Along with a custom transmission calibration, the prototype converter allowed the car to launch harder, which improved the 60-foot time significantly and thereby improved the quarter-mile elapsed time.
The best performance to date includes:
- 60-foot time of 1.425 seconds
- Eighth-mile time of 6.764 seconds at 100.85 mph
- Quarter-mile time of 10.685 seconds at 125.73 mph
Consistency in the performance tests came in large part from the Camaro SS’ production eight-speed paddle-shift automatic transmission, which fired off quick, immediate upshifts.
“We worked this car just as hard as any serious racer would,” said Dickens. “We made pass after pass, pushing it harder, and were amazed at the capability and durability that came straight off the assembly line.”
To support the greater horsepower and channel it to the ground durably, the engineers borrowed some heavy-duty, proven parts from the Gen 6 Camaro ZL1 including the half-shafts and prop shaft and the beefier Gen 5 ZL1 and Chevrolet Performance driveline upgrade with a 250mm, 3.73-geared rear-axle center section. They nicknamed it “Gravedigger,” because they haven’t been able to break it. The parts might be included in a range of Gen Six Camaro drag-racing parts Chevrolet is evaluating.