1968 Ford Mustang Shelby GT500: The King Cobra Strikes Again
The 1968 model year marked a significant evolution for the iconic Shelby Mustang, with the GT500 solidifying its status as the "King of the Road." While the previous year's GT350 focused on nimble performance, the GT500 was conceived as the ultimate street-legal predator, packing serious V8 power and a more imposing presence.
Engine and Performance:
The heart of the 1968 GT500 was the formidable 428 Police Interceptor V8. This big-block engine, though rated conservatively at 355 horsepower, was known for its immense torque and strong, usable powerband. For the GT500, Shelby engineers fitted it with a functional ram-air induction system, often referred to as the "Cobra Jet" or "Super Cobra Jet" setup, which featured twin Holley 4-barrel carburetors atop an Edelbrock intake manifold. This setup dramatically increased airflow and, unofficially, horsepower figures often climbed well into the 400s.
- Transmission Options: Customers could choose between a close-ratio 4-speed manual transmission (often a Ford Toploader) for a more visceral driving experience, or a 3-speed automatic transmission for enhanced street drivability.
- Exhaust System: A free-flowing dual exhaust system was standard, delivering a deep, throaty rumble that announced the GT500's presence.
- Suspension and Brakes: Shelby fettled the Mustang's suspension with stiffer springs, shocks, and sway bars to better handle the increased power. Heavy-duty front disc brakes were standard, offering improved stopping power commensurate with the car's performance capabilities. Rear drum brakes remained.
Exterior Design:
The 1968 GT500 was visually distinct from its standard Mustang brethren, showcasing Shelby's aggressive styling cues.
- Front End: A distinctive fiberglass hood featured prominent hood scoops for the ram-air system and brake cooling. The grille was often modified with fog lights, and the iconic Shelby Cobra emblem was prominently displayed.
- Side Profile: Side scoops were still present, channeling air for cooling and aesthetics. Unique side stripes with "GT500" badging denoted its performance pedigree.
- Rear End: The rear of the car received a complete makeover. A fiberglass spoiler was integrated into the trunk lid for improved aerodynamics. The taillights were frequently replaced with sequential units from the Mercury Cougar, giving the GT500 a unique and instantly recognizable rear-end signature. The "Shelby" lettering adorned the trunk panel.
Interior Enhancements:
Inside, the GT500 offered a blend of sporty appointments and comfort.
- Dashboard: Shelby often added additional Stewart-Warner gauges to the dashboard, monitoring vital engine functions like oil pressure, amperage, and coolant temperature.
- Seating: High-back bucket seats were standard, often upholstered in vinyl or leather. Some models featured comfort-weave upholstery.
- Steering Wheel: A wood-rimmed steering wheel was a popular option, adding a touch of classic sportiness.
- Roll Bar: A prominent roll bar was often installed behind the front seats, a nod to the car's racing heritage and a feature that added to its muscular appearance.
The GT500KR (King of the Road):
Towards the end of the 1968 model year, Shelby introduced the GT500KR (King of the Road). This iteration received the more potent 428 Cobra Jet V8 with specific performance enhancements, including a higher-performance camshaft and a more aggressive ignition system. The KR models are considered the most desirable and potent of the 1968 Shelby GT500s.
Legacy:
The 1968 Ford Mustang Shelby GT500 stands as a testament to the golden era of American muscle cars. It was a car that didn't just look fast; it delivered on its promise of exhilarating performance and head-turning style. Its potent V8 engine, aggressive styling, and limited production numbers have cemented its place as a highly sought-after classic and a true icon of automotive history.