1993 Chevrolet Camaro Red Z28 coupe

This 1993 Chevrolet Camaro Z28 has a console plate that reads “ Granatelli-built prototype Paxton supercharged GSS R-Model SEMA car.” He goes on to say, “It was featured in Motor Trend magazine and was displayed at the 1994 SEMA show. Documentation since new is included.” 

It does appear to be the car that is on the SEMA show floor and in the Motor Trend article photos. And Motor Trend referred to it as a GSS R-Model. The seller continues, “The car had been sitting since 2004 until we brought it out of a collection from an estate sale. Full mechanical maintenance was done in the spring of 2024. That included installing a new Petris Automotive Optispark and a thermostat, filling with Red Line synthetics throughout, and flushing the cooling system. This car is in mint condition.”

• The seller believes the odometer reading of 6,908 miles is accurate.
• He indicates that the LT1 5.7-liter OHV V8 is original to the car.
• The modified engine produces 414 horsepower, per the Motor Trend article.
• A Paxton supercharger, headers, and GSS stainless-steel exhaust were installed, it said.
• Programmable fuel injection is fed by a high-volume fuel pump and adjustable fuel regulator.
• The six-speed manual transmission sends the torque to a limited-slip rear axle.
• This is fitted with a 3.73:1 gearset.
• No prior body damage has been reported.
• The red paint is original, per the seller.
• An aero body kit, rear spoiler, and the black hood stripes were added when the car was modified.
• The GTS headlight and taillight covers were installed.
• Paxton gauges were installed ahead of the shifter.
• A GSS shock tower brace, six-point rollbar, and subframe connectors stiffen the structure.
• GSS Secre-Trac lowering springs improve stance and handling.
• A tubular panhard rod, torque arm, and rear control arms further aid handling.
• A set of GSS 13-inch Brembo disc brakes reside up front.
• Larger-than-stock-Z28 GSS 17×9.5 aluminum wheels have bigger 285/40ZR-17 tires mounted.

• Documentation since new is included in the sale, the seller notes.

• No needs were listed for this vehicle.

• This 1993 Z28 is “ SEMA show car (a photo at SEMA is included).
• Documentation since new goes with the car, he adds.
• The car also features GSS EFI components, exhaust, body, suspension, brake, and wheel upgrades.

The seller states that this vehicle will be sold on the proper Alberta, Canada document in his wife’s name for transfer of ownership. This 1993 Chevrolet Camaro Z28 is stated to be an uber-rare Granatelli Signature Series R-Model that was displayed at the 1994 SEMA Show and in Motor Trend.