History of Chevrolet K20
The Chevrolet K20 is a true icon of American engineering, blending rugged design with unmatched durability. As the ¾-ton, four-wheel-drive member of Chevrolet's legendary C/K truck lineup, the K20 earned its reputation as the ultimate heavy-duty workhorse.
Built for the Toughest Jobs
The Chevrolet K20 debuted as part of the revolutionary C/K truck series in the early 1960s. While the K20 nameplate officially appeared in 1962, the earlier 1960 and 1961 models were branded as Apache
trucks, featuring a distinctive pig nose
hood design. This first-generation C/K series (1960-1966), affectionately called Hamburger Trucks
by enthusiasts, introduced unique body-side styling and innovative engineering that would define Chevrolet's truck lineup for years to come.
Designed for drivers who needed a vehicle capable of handling the most demanding tasks, the Chevy K20 delivered exceptional performance on and off the road. With its reinforced chassis, robust drivetrain, and legendary four-wheel-drive system, the K20 was built to work hard and go anywhere.
The first generation (1960-1966) established the K20's reputation with its innovative drop-center ladder frame, providing superior ride quality compared to other trucks of its time. By the second generation (1967-1972), Chevrolet refined the K20's styling, powertrains, and off-road performance. Known as the Action Line,
these models featured muscular designs, improved interiors, and enhanced off-road capabilities, making them a favorite among outdoor enthusiasts and job site warriors alike.
The Square Body Era
The third generation (1973-1987) marked the debut of Chevrolet’s iconic Square Body
design, a name affectionately given by enthusiasts despite GM's official Rounded Line
designation. This generation saw the K20 evolve into an even more capable machine. Its boxy, angular styling remains an enduring symbol of rugged reliability, while upgraded axles, suspension systems, and drivetrain options solidified its status as the go-to truck for heavy-duty tasks and off-road adventures.
The Square Body K20 offered a wide range of configurations to suit various needs. From long-bed models optimized for hauling to short-bed versions prized for their maneuverability, the K20's versatility ensured its popularity among farmers, contractors, and off-road enthusiasts.
Heavy-Duty Capability
The Chevrolet K20's ¾-ton configuration was designed to handle heavy loads with ease. Whether hauling equipment, towing trailers, or navigating rugged trails, the K20 excelled in every category. Its advanced four-wheel-drive system paired with powerful engine options-including straight-sixes, small-block V8s, and big-block V8s-provided the muscle needed to tackle the toughest challenges.
The K20's robust construction and reliable performance made it a trusted choice for those who demanded uncompromising durability. Its adaptability, with options for long-bed and short-bed configurations, ensured it could meet a wide range of needs.
A Legacy of Strength
The Chevrolet K20's combination of heavy-duty engineering and four-wheel-drive capability cemented its status as one of the most versatile and reliable trucks of its era. Whether restoring a classic Square Body or upgrading a vintage Action Line model, the K20 remains a symbol of rugged American strength and ingenuity.
Original Parts Group proudly offers a complete selection of high-quality restoration and performance parts to keep your K20 running strong and looking great. With thousands of parts in stock and expert support, we're here to help you preserve and enhance the legacy of your K20 for generations to come.