Ford B series: fifty years of Ford school-bus chassis

FORD

Ford B series
Ford B series. Photo by Darren felon, CC BY 2.0 via Wikimedia Commons.

The Ford B series was a bus chassis produced by Ford from 1948 to 1998. A variant of the medium-duty F-Series developed for bus use, it was sold in the United States and Canada and exported around the world to body builders.

Ford B series at a glance

Ford B series key facts
Maker Ford Motor Company
Production 1948–1998
Type cowled chassis, bodywork by a second-stage maker
Basis medium-duty Ford F-Series
First models variant of the F-5 and F-6 (1½ and 2-ton)
Main use school buses, plus specialty vehicles
Naming three-digit model numbers from 1953, four-digit for diesels from 1968
Canadian sales also through Lincoln-Mercury dealers as the Mercury M-series
Last generation 1980, revised in 1995
End of production 1998

This page is based on English Wikipedia only.

History of the Ford B series

A chassis, not a truck

The B series was a cowled-chassis vehicle: a bare frame behind the firewall, with the body supplied by a second-stage manufacturer. That made it a natural base for school buses, and most were built as yellow school buses, though the chassis also went into specialty vehicles. It was introduced in 1948 alongside the new F-Series truck line, as a variant of the medium-duty F-5 and F-6, and it sat between the pickups and the “Big Job” heavy conventionals.

Following the F-Series

When the F-Series moved to three-digit model numbers for 1953 the B series followed. Diesel engines became an option in 1968, marked by a four-digit model number until 1991. Until 1969 Ford of Canada sold the B series through both its Ford and Lincoln-Mercury networks, the latter badging it as part of the Mercury M-series, because rural Canadian towns often had only one of the two dealerships. For most of its life the chassis paralleled the medium-duty F-Series: from 1967 those trucks received wider front axles and their own front bodywork, and the B series used that design entirely.

The end of the cowl

A final generation appeared in 1980 and was revised in 1995. Ford stopped building cowled-chassis vehicles after 1998, the same period in which it sold the Louisville/Aeromax heavy truck line to Freightliner. The company stayed in the medium-duty market with the F-650 and F-750 Super Duty from 2000, but it built cutaway chassis rather than cowled ones, and the B series’ share of the school-bus market passed to chassis such as the Freightliner FS-65 and the Blue Bird Vision.

Design and features

  • Cowled chassis: a bare frame for a bus or specialist body.
  • F-Series basis: medium-duty mechanicals developed alongside the trucks.
  • Fifty-year run: the same concept from 1948 to 1998.
  • Mercury M-series: the same chassis sold through Lincoln-Mercury dealers in Canada.

Ford B series versions

  • First generation (1948–1952): cowled versions of the F-5 and F-6.
  • 1953 range: three-digit model numbers with the restyled F-Series.
  • Diesel models (1968–1990): four-digit model numbers.
  • Final generation (1980–1998): revised in 1995.

The B series shared its engineering with the F-Series and was built alongside the C series trucks. More Ford vehicles are in the Ford collection.

Sources