NAPCO (Northwestern Auto Parts Company) was a

four-wheel drive Four-wheel drive, also called 4×4 ("four by four") or 4WD, refers to a two-axled vehicle drivetrain capable of providing torque to all of its wheels simultaneously. It may be full-time or on-demand, and is typically linked via a transfer cas ...

automobile parts

manufacturing company Manufacturing is the creation or production of goods with the help of equipment, labor, machines, tools, and chemical or biological processing or formulation. It is the essence of secondary sector of the economy. The term may refer to a r ...

founded in 1918. It was based in Minneapolis, Minnesota, in the United States.

History

1940s

During

World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposing ...

, NAPCO helped the war effort by producing specialized mechanical parts and assemblies that were tested in war conditions. As early as 1942 NAPCO began building

assemblies to be fitted to Ford, GMC, Chevrolet and Studebaker vehicles however NAPCO is primarily associated with GMC and Chevrolet pickups. From 1942 to 1956 4×4 GMC and Chevrolet trucks could be ordered by the government and civilians with a NAPCO Power-Pak kit and the kit could be installed later. The retail price of Napco Power-Pak was $995. This option raised the price on a new two-wheel drive truck from $1,548.96 to $2,796.96. The kit was shipped in a crate measuring 80"x30"x26" weighing 1,410 pounds. In a matter of 3 hours with as little as 4 holes drilled in existing chassis a truck would be converted into a "Mountain Goat", a "full sized truck that will climb steep inclines with ease". One feature was the "shift on the fly" rubber mounted

transfer case A transfer case is a part of the drivetrain of four-wheel-drive, all-wheel-drive, and other multiple powered axle vehicles. The transfer case transfers power from the transmission to the front and rear axles by means of drive shafts. It also syn ...

with a dual-range option. There were companies that installed these upgrades for the previously mentioned manufacturers. Besides the four-wheel drive units NAPCO also provided

winch A winch is a mechanical device that is used to pull in (wind up) or let out (wind out) or otherwise adjust the tension of a rope or wire rope (also called "cable" or "wire cable"). In its simplest form, it consists of a spool (or drum) attach ...

es, auxiliary transmissions, tandem drive axles, hydrovac systems, and

dump truck A dump truck, known also as a dumping truck, dump trailer, dumper trailer, dump lorry or dumper lorry or a dumper for short, is used for transporting materials (such as dirt, gravel, or demolition waste) for construction as well as coal. A t ...

bodies.

1950s

From 1956 to 1959 the NAPCO Power-Pak option could be ordered directly from GM (an official RPO 690 was assigned in 1957) and factory installed on trucks with very few modifications to the original chassis. The 1955 4×4 NAPCO GMC or Chevrolet was a $1250.00 to $1550.00 optional add on. The 1957 Chevrolet and GMC 3100 4×4 price was a bargain at $2549.00 compared to the earlier add on kits. In 1960 NAPCO and GM parted ways when GM redesigned the front suspension on their 1960 pickup line so that it wasn't easily compatible with the existing Power-Pak kits. Prior to 1955 NAPCO Power-Pak conversions were done on 3/4 and one ton GMC and Chevrolet chassis. The Pre-1955 ton chassis used an incompatible "

torque tube A torque tube system is a power transmission and braking technology that involves a stationary housing around the drive shaft, often used in automobiles with a front engine and rear drive. The torque tube consists of a large diameter stationary h ...

" drive. In the fall of 1954 GMC and Chevrolet changed the 1955 ton pickup and Suburban models to the compatible Hotchkiss drive. Today these trucks are still considered to be very versatile and durable 60 years later and are considered to be collectible by NAPCO enthusiasts. Napco also produced a front wheel assist for Ford 600 and 800 series tractors in the mid 1950's in a partnership with Sherman. The kit was marketed under the name Sherman Napco. The Sherman Napco front wheel assist kit did not sell in large numbers and competed with the Elenco front wheel assist.

Other early 4×4 manufacturers

Early factory 4×4 pickup manufacturers and early 4×4 conversion kit manufacturers include: *

Marmon-Herrington The Marmon-Herrington Company, Inc. is an American manufacturer of axles and transfer cases for trucks and other vehicles. Earlier, the company built military vehicles and some tanks during World War II, and until the late 1950s or early 1960s wa ...

in Indianapolis.

is commonly associated with equipping 1940s and 1950s Ford pickup trucks with 4 wheel drive. * Willys Overland along with

Ford Ford commonly refers to: * Ford Motor Company, an automobile manufacturer founded by Henry Ford * Ford (crossing), a shallow crossing on a river Ford may also refer to: Ford Motor Company * Henry Ford, founder of the Ford Motor Company * Ford F ...

built the Willys MB Jeep working from designs by the American Bantam Car Company. After W.W.II Willys-Overland built the CJ series, and Willys Wagons among other early 4x4 vehicles. * Chrysler Motor Corporation's Dodge Trucks World War II Power Wagon.

References

{{Reflist Auto parts suppliers of the United States Automotive transmission makers Four-wheel drive layout Off-road vehicles Manufacturing companies based in Minneapolis Manufacturing companies established in 1918 1918 establishments in Minnesota Defunct companies based in Minnesota American companies established in 1918

History

1940s

1950s

Other early 4×4 manufacturers

See also

References