| GM B Platform | |
|---|---|
 1973 Oldsmobile Delta 88 convertible | |
| Overview | |
| Manufacturer | General Motors Buick Pontiac Chevrolet Oldsmobile Cadillac |
| Production | 1926–1996 |
| Body and chassis | |
| Class | Full-size car |
| Layout | FR layout |
| Chronology | |
| Successor | GM H platform (FWD) (full-size) GM G platform (1995) (full-size) GM W platform (full-size) GM V platform (RWD) (for Chevrolet Caprice sold in the Middle East) GM Zeta Platform (for Chevrolet Caprice sold in both the Middle East & North America and Chevrolet SS for the RWD Impala SS) |
The B platform (also known as the B body) is a full-size, rear-wheel drive, body-on-frame car platform, that was produced by General Motors (GM) from 1926 to 1996. Originally made for Oldsmobile and Buick, all of General Motors's five main passenger car makes would use it at some point. It was closely related to the original rear-wheel drive C and D platforms, and was used for convertibles, hardtops, coupes, sedans, and station wagons. With approximately 12,960,000 units built, divided across four marques, the 1965–1970 B platform is the fourth best selling automobile platform in history after the Volkswagen Beetle, Ford Model T, and the Fiat 124 (and its licence-built copies, mainly classic Ladas).[1]
Originally, the B platform was used for Buick and Oldsmobile products, with the A platform for Chevrolet and Oakland, and the C and D platforms devoted to Cadillac. During the General Motors companion make program, Vikings and Marquettes were also manufactured on this platform, as were La Salles from 1936 to 1940. The B platform became GM's base model platform in 1958, when all existing Chevrolet products were upgraded to the B platform.
The B platform was used for the Pontiac Streamliner Torpedo and Streamliner; the Oldsmobile L-Series, Series 70, and Series 88; the Buick Special and Century; the LaSalle Series 50; and the Cadillac Series 60, Series 61, and Series 63.
For the 1959 model year, the previous A- and B-bodies were built on the new B platform[2][3] that lasted until 1996. During this period, the B was the most modest of GM's three full-sized platforms, slotting below the upscale C and the luxury D. The A platform designation would be resurrected by GM in 1964 for a new series of intermediate-sized cars including the Chevrolet Chevelle, Pontiac Tempest, Oldsmobile Cutlass, and Buick Skylark.
- ^ Kowalke, Ron (1997). Standard Catalog of American Cars 1946–1975. Krause publications. ISBN 0-87341-521-3.
- ^ "Requiem for Misterl: The 1959 Cadillac and the Winter of Harley Earl". ateupwithmotor.com. Retrieved 2013-01-05.
- ^ "AUTOMOTIVE ORAL HISTORIES: The Reminiscences of William L. Mitchell". www.autolife.umd.umich.edu. Archived from the original on 2010-10-21. Retrieved 2013-01-05.