Harkening back to the days where dealers collaborated with speed shops to produce branded high performance versions ala Baldwin Motion, the HTR-GS640/SC is the creation of Howard Tanner of Redline Motorsports and Dan Carlton of DeNooyer Performance Chevrolet. Take a Grand Sport Corvette, add an Edelbrock E-Force supercharger and host of other upgrades and you got a 640 horsepower ZR1-fighter for just over $82,000.
The base of the HTR-GS640/SC (Translation: Howard Tanner Redline Grand Sport 640 hp Supercharged) is a 3LT Corvette Grand Sport painted Cyber Gray and ordered with Competition Gray aluminum wheels, optional two tone seats and a full-width spoiler. Redline adds the go-fast goodies which include the Edlebrock E-Force supercharger with long intake runners, a new cam, valve springs with titanium retainers and chromoly push rods. A Borla exhaust and an MGW short-throw shifter complete the performance modifications.
DeNooyer Performance also adds the custom body-length red stripes, coloring the Grand Sports front quarter panel louvers red as well. Just in front of the rear tires is the label that designates the Grand Sport as an HTR-GS640/SC. It’s an interesting look for sure!
The modifications are covered by a three year or 36,000 mile warranty and as DeNooyer is a Chevy dealer, they can work with new buyers for setting up financing and trade-ins. About the only thing we don’t care for is the name, but that’s just semantics when you’ve got a blown Grand Sport with power equal to Chevy’s King of the Hill ZR1.
Learn more about the HTR-GS640/SC at DeNooyer Performance Chevrolet.