They had changed the industry and left their competitors behind to start off a 15 year run for the 1973-1987 C and K Series Trucks. Optional transmissions included a three speed overdrive unit C-10 only and several different four-speed manuals, the Powerglide 2-speed automatic, or the 350 and 400 3-speed automatic. There were two engine choices: the V8 replaced the , while the venerable continued. The 1987 models continued to be built at , , and. To enhance durability the trucks featured extensive use of galvanized steel for corrosion resistance and a fully welded frame with a boxed front section for strength and rigidity. Studies showed that it would take about 4,000 side-impact crashes with such a truck to get one with fire, major injury, or fatality. Additional hood details were also added in 1979, along with power windows.
The wood grain inserts were replaced by bright inserts for model years 1978 to 1987. Engines choices initially consisted of six or eight cylinder engines with either manual or transmissions. A Z71 off-road package was also available with skid plates and Bilstein shocks. Fair use is a use permitted by copyright statute that might otherwise be infringing. Upper class trim levels also used materials for quieter ride comfort.
Trim levels consisted of the Custom Deluxe, Silverado, and Scottsdale, with the Cheyenne discontinuing. Side markers were now horizontal rather than vertical. Featuring a 133-inch wheelbase, the Longhorn added an extra 6 inches 15 cm to the bed. These packages consisted mostly of comfort features — nicer interiors, more padding and insulation, carpet, chrome trim, and upper and lower side molding and tailgate trim. The third safety advancement was the introduction of dual front lap-and-shoulder with emergency for outboard occupants in 1975 for the 1976 model year. K-Series pickups also featured an off-road oriented design, with the bolted directly to the transmission and running gear tucked up as high as possible under the vehicle to reduce the chances of snagging vital components on obstacles, as well as to achieve a low and optimal.
Exposed wrapped in steel were standard, with underbody armor optional for further protection. Some internal cab changes were also made, most notably the switch from a hand-operated parking brake to a foot pedal, and a more modern looking two-spoke steering wheel with plastic horn button replaced the previous year's three-spoke wheel with chrome horn button. The first was the standard passenger-side , and the second was the energy-absorbing. Three trim levels were available: Cheyenne, Scottsdale, and Silverado. The square body C10 came to an end as well as the C10 generation as a whole.
The new automatic locking differential was offered under the G86 code, replacing the Eaton NoSpin differential, and eventually replacing the old Positraction in 1974, at which point it assumed the G80 code. Cheyenne Super was also replaced by the Silverado Model as the Top Trim Level. The verdict was later overturned by an appeals court and the case settled before it could be re-tried. Conventional four-wheel drive pickups featured manual and a two-speed 205 transfer case with four drive modes: Two High, Four High, Neutral, and Four Low. Standard Catalog of American Light-Duty Trucks.
Also Chevrolet was 1 in Chevy Truck Sales. Once the shift from two-wheel drive to four-wheel drive was made, the vehicle could be driven at any forward or reverse speed. For the 1982 model year, the luxury trim levels were dropped, leaving the base, midrange, and top-of-the-line luxury trim level packages. This truck also had a weight reduction up to 300 pounds and would have moved the fuel tank to the driver side bed side. However, the leaf spring rear suspension was still available on those trucks, and standard on 30 series trucks. From 1975-1976, the grille features three horizontal bars and sits flush with the front.
The latter system was introduced for 1981. A quick release tailgate became standard for the Fleetside models and rain gutters were standardized across all models. Rather than circular wheel wells, the trucks featured a squarer wheel opening with rounded corners. Sculpted sides gave the trucks added dimension. There were two types of pickup boxes to choose from. In later years a four-cylinder diesel Q20B was also offered labeled as D-10 light truck only. Pena announced that a two-year investigation had found that the trucks posed a fire hazard.
Both steel and wood floors were available. The 1975 Chevy trucks were a hot product, with almost 750,000 vehicles sold that year. Since 1957, trucks were available from the factory as four-wheel drive, and the new class scheme would make this known. The same front sheet metal was used throughout the rest of the third generation until 1987. Along with the name change, came other major improvements and tweaks for the final model year of the conventional cab pickups.
New paint schemes were available to reach customers interest. New front door panels and new seats were also included. Enz used and a poorly fitted gas cap to create the impression of a dangerous vehicle. With a wider and larger frame, the trucks were coined the square body Chevys as they had a box-like appearance. The windshield wipers moved from behind the hood to the top of the cowl. The fenders were redesigned as well as the hood hinges and vent windows. Dual exhaust was also added during the '91-'93 model years.
There were no suspension or engine upgrades provided with any of the sport packages as this was an appearance only option. Also we are going to touch on the differences between the years and trim packages. The was relocated from the cab to the outboard sides of one or both beneath the cab floor extending under the leading edge of the pickup box, commonly referred to as a arrangement. There was another round of new grilles, revised inner door panels that left less metal exposed, a four-wheel drive, full one-ton chassis was added to the lineup, and a was used for the front axle, as well as an electric oil pressure gauge replacing the mechanical unit. Also the 700R4 Transmission came available as an option for an automatic transmission. Starting in 1979, the headlight bezels incorporated the front turn signals, while the previous grille designs had featured separate headlight and turn signal housings. The only noticeable change for 1970 was a minor update to the Chevrolet grille.