Chevrolet Camaro Z/28
The 1967 Chevrolet Camaro Z/28 is one of the most significant performance cars in American automotive history. Created specifically to homologate the Camaro for SCCA Trans-Am road racing, where engines were limited to 305 cubic inches, the Z/28 combined a specially built 302 cubic-inch V8 with a comprehensive chassis package that transformed the standard Camaro into a genuine road-racing weapon.
The Z/28's heart was the unique DZ-302 engine, created by mating the 327 block with the 283 crankshaft to achieve a displacement of 302.4 cubic inches -- just under the Trans-Am limit. Officially rated at 290 horsepower, the engine was widely understood to produce significantly more, with many estimates placing actual output closer to 350 horsepower. The high-winding small-block featured a solid-lifter camshaft, large-port Corvette heads, a Holley 800 CFM four-barrel carburetor, and an aggressive exhaust system that gave it a distinctive, mechanical soundtrack.
The Z/28 was not available with an automatic transmission -- only the Muncie M21 close-ratio four-speed manual was offered. This deliberate limitation emphasized the car's sporting intent. The package also included heavy-duty suspension with specially valved shock absorbers, quick-ratio manual steering, and 15-inch Rally wheels. Power disc brakes on the front axle were mandatory, addressing one of the standard Camaro's most significant weaknesses.
Critically, Chevrolet did not advertise the Z/28. It was a Regular Production Option (RPO Z28) that appeared only in the order guide, not in consumer brochures or advertisements. This unusual approach reflected the car's true purpose as a homologation special -- Chevrolet needed to sell enough street versions to qualify the car for racing, but did not want to attract buyers who would be surprised by the Z/28's demanding character.
Driving a 1967 Z/28 is an experience that sits firmly in race car territory. The DZ-302 is happiest above 4000 rpm, where the solid-lifter camshaft comes alive and the engine pulls with a ferocity that belies its modest displacement. Below 3000 rpm, the engine is lumpy and reluctant, the clutch is heavy, and the close-ratio gearbox requires precise matching of engine speed and road speed. In corners, the Z/28 feels planted and responsive, with quick steering providing excellent feedback.
On the race track, the Z/28 proved spectacularly successful. With drivers like Mark Donohue campaigning Penske-prepared Z/28s, Chevrolet dominated Trans-Am racing, beating the Mustangs and Cougars that had previously ruled the series. This racing success cemented the Z/28's reputation and created a performance legend that continues to this day.
Only 602 Z/28s were produced for 1967, making it one of the rarest and most valuable first-generation Camaros. Documented, matching-numbers examples regularly sell for well into six figures at major collector car auctions, with exceptional examples approaching half a million dollars. The combination of extreme rarity, racing heritage, and the raw driving experience ensures the 1967 Z/28 will remain one of the most coveted American performance cars ever built.
With only 602 produced, documentation is everything. Verify VIN, Protect-O-Plate, and engine pad stampings. The DZ-302 engine should have correct casting numbers and date codes. Many standard Camaros have been converted to Z/28 specification. The special close-ratio M21 transmission should be verified. Check for correct 15-inch Rally wheels and the mandatory front disc brakes. A documented provenance can add tens of thousands to value.
Assembled at the Norwood, Ohio and Van Nuys, California Camaro plants. Only 602 Z/28s were produced for 1967, as the option was not publicly advertised. The car was created specifically for SCCA Trans-Am homologation.