Ford F-Series (sixth generation)
The sixth generation of the Ford F-Series, also known as the "dentside Ford" to enthusiasts, is a line of pickup trucks and medium-duty commercial trucks that were produced by Ford Motor Company from the 1973 to 1979 model years. Produced by Ford in North America, Argentina, and Australia, this is the third and final generation of trucks derived from the 1965 Ford F-Series.
The sixth generation marked several functional design changes and an expansion of the model line. For 1973, the regular cab F-350 became available with a wide "Styleside" bed for the first time. For 1974, a "SuperCab" extended cab pickup truck was introduced, between the two-door standard cab and the four-door crew cab. For 1975, the F-150 was introduced; a higher-payload version of the F-100, the F-150 would become the most popular version of the model line. A second generation of the Ford Bronco SUV was released for 1978 on a shortened F-100 chassis.
In 1977, the model line surpassed the Chevrolet C/K to become the best-selling truck in the United States, a position it has held ever since.
Model history
This generation was launched in December 1972 for the 1973 model year. While retaining the same chassis of the previous generation, several revisions were made. To fight corrosion, Ford increased its use of galvanized sheet metal, zinc coated steel, and zinc-rich primer. To increase safety, the fuel tank was moved out of the cab, creating a storage area behind the bench seat.1973–1975
For 1973, a new model was offered: The heavy duty F-350 V8. This was a new heavy-duty pickup made with contractors and camping enthusiasts in mind. It rode on a longer wheelbase than an F-100 or F-250 but had the same overall length. Ordering the Camper Special package for the F-350 SRW made it a "Super Camper Special", which was designed for the much heavier slide-in campers coming on the market at that time.For 1974, the F-Series became available in an extended cab for the first time. Dubbed the "SuperCab", it offered the six-passenger seating of the crew cab in a shorter length, and competed with Dodge's Club Cab.
For 1975, the F-150 was introduced; this truck was designed with a heavier GVWR and maximum payload.
1976–1977
In 1975, this familiar "split-grille" design was given a slight facelift to feature black accents around the headlights and a refined overall appearance.For the 1976 model year, a limited edition Bicentennial Option Group was offered on Custom styleside pickups, in either Wimbledon White or Bahama Blue, with a golden eagle stripe on the side, and red, white, and blue cloth inserts on the seats.
1977 models received a redesign of exterior trim, with the cowl insignias made smaller and moved near the windshield. The bed received a rectangular fuel door to conceal the gas cap. The fuel tank located behind the seat was discontinued due to safety concerns. It also would be the last year of the medium-duty F-500.
Starting in the 1977 model year Ford dropped the "Super" from "Super Camper Special" in favor of calling the F-350 models with camper packages "Camper Special", a name that was previously only assigned to F-250's with camper packages.
1978–1979
For 1978, the split grille gave way to a larger single-piece item which no longer incorporated the headlamps, the turn signals, or the ' callout. The headlamps were located in housings outboard of the grille, with the turn signal lamps below them. A new chrome-plated ' callout was placed on the hood immediately above the grille. Round headlamps were used on the 1978 Custom trim level; the higher Ranger, Ranger XLT, and Ranger Lariat trim levels had new rectangular headlamps with optional chrome bezels and a chrome grille insert. Dual Fuel tanks in the bed became standard. New for 1978 was the option of part- or full-time four-wheel-drive on SuperCab models. Full-time four-wheel drive models had a chain-driven NP203 transfer case, while part-time four-wheel drive trucks were equipped with a gear-driven NP205.For 1979, all models used the rectangular headlamps, with bezels available in either black or chrome to match the aluminum grille frame.
Models
The GVWR ratings for these trucks was tied to a combination of wheel, spring, axle and brake combinations. The series code on the ID tag denotes which model and from that it can be determined what weight rating each vehicle has. 4x4 trucks can also be identified by the Vehicle Identification Number and on the ID plate as a serial number. For example, F10 is an F-100 2-wheel drive, but F11 is an F-100 4x4, and so on. Serial numbers beginning with an "X" are SuperCab models.Trim
The sixth generation F-Series underwent a slight revision of its trim lines. The base and Sport Custom trims were dropped. The Ranger and Ranger XLT returned, with the Ranger Lariat trim introduced in 1978 with cloth interior trim, specific two-tone body and tailgate trim.- Custom
- Ranger
- Ranger XLT
- Ranger Lariat
Production outside North America
Australia
Ford Australia assembled right-hand drive sixth generation F-Series that were fitted with a lineup of locally sourced engines. The base trim level was called Custom, with a higher spec XLT level only available on the F-100.1973–1975
Initially they were available with US sourced 240 and 300 CID Straight-6 engines. From August 1974 the 240 CID engine was replaced with locally sourced 250 CID Straight-6 and the 300 CID was replaced by the locally sourced 302 Cleveland V-8 engines. The 302 Cleveland was a destroked 351 Cleveland built using tooling exported to Australia after the closure of the Cleveland production line. The F-100 with a 302 Cleveland model was the first Australian Sixth Gen to receive an automatic transmission as an option, the six cylinder powered models and the larger F-250 and F-350 were limited to a four-speed manual. The Canadian built 4x4 F-250 was added to the lineup in 1975 with the 300CID Straight-6 engine to supplement the locally assembled rear-wheel drive F-100, F-250 and F-350.1976–1977
The 250CID Straight-6 was upgraded with a new crossflow head and rebadged as the 4.1 litre, increasing power and lowering emissions to meet new legislation being introduced in Australia. At some point during 1976, the GVM of the F-100 was quietly increased from to ahead of the release of the 1977 specs. In 1977, a locally assembled 4x4's F-100 with Australian built engines was added to the lineup to replace the fully imported 4x4 F-250.1978–1979
In 1978, the 351 Cleveland V-8 replaced the 302 Cleveland V8 in the F-250 and F-350. The 302 Cleveland continued alongside the 351 Cleveland in the F-100. The 4.1 litre inline 6 cylinder continued to be sold across the range.In 1979, the 302 Cleveland was discontinued, leaving the standard engine as the 4.1 litre Straight-6, with the 351 Cleveland, as the only upgrade, except the F-100 4x4's which was only available with the 5.8 Cleveland litre V8. The F-250 and F-350 had an automatic gearbox as an option for the first time in Australia, though still only on the V8 engine.
Argentina
Ford Motor Argentina also produced the sixth-generation F-series, continuing production through 1982. The F-100 was offered as a pickup truck, with the F-350 chassis cab.Sharing its grille design with 1968-1972 American medium-duty trucks, Ford Motor Argentina offered the F-600/F-6000 and the F-7000 through 1983.
Powertrain details
The F-100 was available with three engine choices, the 221 CID "Econ" straight-six, the 292 CID Y-Block V8 and a 203 CID Perkins 4 cylinder and 6 cylinder diesel engines. The only transmission on offer was a 3-speed manual.| Engine | Years | Power | Torque | Notes |
| 221 CID Straight-6 | @ 4,000 rpm | Argentina Market | ||
| 292 CID Y-block V8 | @ 4,000 rpm | Argentina Market | ||
| 203 CID Perkins I4 | @ 2,800 rpm | Argentina Market |
Variants
Ford Bronco (1978-1979)
For 1978, after several years of delays, Ford released a second generation of the Ford Bronco. To compete directly against the Chevrolet K5 Blazer and the Dodge RamCharger, the Bronco grew in size, adopting a shortened F-100 4x4 chassis. While continuing the two-door wagon bodystyle of the previous generation, the 1978 Bronco adopted a half-cab/hardtop design ; the configuration was used through the 1996 model year.Along with greater sales potential, the redesign of the Bronco allowed for product commonality with the Ford F-100 ; for the next two decades, the two model lines would share nearly all exterior body panels from the front doors forward, many interior and trim panels, and would also have powertrain commonality. The 1978-1979 Bronco was fitted exclusively with four-wheel drive; the 351M V8 was standard, with the 400 V8 offered as an option.
Medium-duty F-Series
Redesigned for the 1967 model year, Ford medium-duty trucks saw little change throughout the 1970s. For 1973, the cab was changed to the new bodystyle alongside the light-duty trucks, and the grille was revised slightly; along with changing two sets of slots in the grille to four, and the headlight surrounds were increased in size. After 1977, Ford ended production of the lowest-GVWR F-500 series. Produced without bodywork aft of the firewall, the Ford B-series was a cowled chassis designed to be mated with bus bodies.The medium-duty F-series was offered with both gas and diesel engines. For 1977, the a 370 cubic-inch version of the 460 V8 replaced the previous FE-series gasoline V8 engines. Shared with the heavy-duty L-Series trucks, the Caterpillar 3208 V8 became an option in F700 and F800 models; diesel-powered trucks were distinguished by an extra "0".
F-250 Highboy (1973-1977)
"Highboy" is an enthusiast nickname adopted by a version of the sixth-generation F-series, pertaining to 1967-1977 F-250 4x4s. The largest 4x4s sold by Ford, these trucks used the narrower frame rail spacing of the F-350 and a divorced transfer case. The model was not a distinct option, but the design configuration that Ford offered for its 4-wheel drive F-250s, deriving its name in reference to its higher ride height. While the highboy design was largely phased out of mass production vehicles by the mid-1970s, the Ford 1970s "highboy" 4x4 is historically significant, as its design formed the basis of the first commercially promoted monster truck, Bigfoot.The highboy design configuration saw its origins as American manufacturers introduced factory-produced 4x4 pickup trucks in the late 1950s. To minimize drivetrain complexity, the transfer case was not mounted directly to the transmission, but mounted separately and connected by a short driveshaft. The design required a longer front driveshaft, consequently raising the ride height for both axles. The "highboy" 4x4 were fitted with 3-inch width 5-leaf front springs; the rear suspension was -inch width 9-leaf springs ; to raise the rear ride height, the rear axle used a 4-inch lift. To aid in suspension travel, the front springs are designed with a larger arch than other F-Series front leaf springs.
For the sixth generation, the F-250 4x4 initially offered with three engines, including the 240 inline-6 and 300 cubic-inch inline-6, and a 360 cubic-inch V8 ; for 1977, the 360 was replaced by the 351M and 400 V8s. The configuration was not offered with the 390 V8. Two transmissions were offered, including a 4-speed manual and 3-speed automatic. Power-assisted brakes were introduced as an option for the sixth generation; front disc brakes were added in 1976.
The F-250 4x4 was marketed in both single-cab and crew cab configurations. Offered in the Custom, Ranger, and Ranger XLT trims only with a long bed, the configuration was not offered with the SuperCab body, auxiliary fuel tanks, and the Camper Special option package. The location of the transfer case precluded the fitment of a second fuel tank and the higher ride height would have decreased rear-seat access for the two-door SuperCab. The Camper Special was not marketed on "highboy" trucks, as that option package was developed specifically for slide-in campers; raising the center of gravity further on a Highboy truck could have posed a greater rollover hazard.
During the mid-1970s, Ford began to revise the design of its F-250 4x4s. As a running change during the 1977 model year, Ford introduced a "married" transfer case ; a design used by the Jeep Gladiator and GM Action-Line pickups, Ford was the last major pickup manufacturer to phase in the design. While slightly more complex, the "married" configuration allowed for a ride height nearly matching two-wheel drive trucks and simpler suspension design; the "lowboy" 4x4 configuration is used for currently produced pickup trucks today. The "divorced" transfer case remained in production, ending production during the 1977 model year.
F-100 Eluminator (2021)
At the 2021 SEMA show in Las Vegas, Ford unveiled the F-100 Eluminator one-off concept truck, an electromod restoration of a 1978 F-100 repowered with the electric vehicle drivetrain and front and rear suspension subframes taken from the Mustang Mach-E GT Performance Edition. The vehicle was designed by Ford Performance and built by several aftermarket shops under contract to Ford to advertise the availability of the Eluminator crate motor replacement for classic vehicles. "Eluminator" is an allusion to the Ford 5.2L "Aluminator" Modular V8 engine.Ford contributed front and rear sub-frames, which were already fitted with electric traction motors, and a battery pack from the Mach-E production line. Roadster Shop built a custom ladder frame to support the vintage body, attach the subframes, and carry the battery underneath the cab and bed. McCue-Lane Electric Race Cars handled final integration of the driveline components. Major interior components also were taken from the Mach-E and used in the "electromod" truck. Brand X Customs handled the restoration of the body, finishing it in Avalanche Gray with copper-colored trim. The wheels were built by Forgeline.
The Eluminator crate motor has an output of and of torque, with a total weight of. At the time of release, Ford Performance announced they also were planning to develop battery systems, controllers, and traction inverters to make a complete drop-in EV drivetrain replacement available commercially for interested parties. The F-100 Eluminator is fitted with two traction motors, one each for the front and rear axles, with a combined output of and of torque. As tested by Motor Trend, the truck is, heavier than the Mach-E donor and it retains its 1978-era aerodynamic drag, so performance is accordingly lower, with the F-100 Eluminator recording a time of 3.9 seconds and a time of 13.0 seconds at a trap speed of . The same 88 kW-hr battery from the Mach-E has a reduced estimated range of in the F-100 Eluminator, less than the Mach-E due in part to the increased aerodynamic drag of the F-100. Ford Performance engineer Brian Novak said that since the engineering drawings were finished, a second example could be built for "McLaren money, not Bugatti money", which Motor Trend estimated to be.