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The GM A platform (commonly called A-body) was a
The earliest GM A-bodied based cars shared a common chassis with the
The A-body platform was reintroduced as an intermediate-sized platform introduced in the 1964 model year for two redesigned and two new mid-sized cars from four of GM divisions. Notable examples include the
All GM A-bodies were completely restyled in 1968. The 400 cu in limit remained. It was removed in 1970, mainly due to Chrysler's domination in the drag racing and muscle car market with larger engines and highest power rated engines available in nearly all Chrysler "B" platform models. This led each of the four GM divisions to offer their largest engines:
All GM intermediate-sized cars were downsized for the 1978 model year in response to CAFE requirements and the increased popularity of smaller cars. The redesigned models were similar in size to the previous X-bodies.
The Buick and Oldsmobile were introduced with
List of GM VIN codes
{{DEFAULTSORT:Gm A Platform (Rwd) A 1
rear wheel drive
Rear-wheel drive (RWD) is a form of engine and transmission layout used in motor vehicles, in which the engine drives the rear wheels only. Until the late 20th century, rear-wheel drive was the most common configuration for cars.
Most rear-wheel ...
automobile platform
A car platform is a shared set of common design, engineering, and production efforts, as well as major components, over a number of outwardly distinct models and even types of cars, often from different, but somewhat related, marques. It is pract ...
designation used by General Motors
The General Motors Company (GM) is an American Multinational corporation, multinational Automotive industry, automotive manufacturing company headquartered in Detroit, Michigan, United States. It is the largest automaker in the United States and ...
from 1925 until 1959, and again from 1964 to 1981. In 1982, GM introduced a new front wheel drive
Front-wheel drive (FWD) is a form of engine and transmission layout used in motor vehicles, where the engine drives the front wheels only. Most modern front-wheel drive vehicles feature a transverse engine, rather than the conventional lon ...
A platform, and existing intermediate rear wheel drive products were redesignated as G-bodies.
1926-1959
The earliest GM A-bodied based cars shared a common chassis with the Chevrolet Superior
The Chevrolet Superior Series F was launched in 1923, manufactured by Chevrolet for four years with a different series per year. The 1923 model was known as the Series B, the 1924 model was the Series F, for 1925 it was known as the Series K and ...
, with Pontiac Six
The Pontiac Six was a more affordable version of its predecessor Oakland Six that was introduced in 1926, sold through Oakland Dealerships. Pontiac was the first of General Motors companion make program where brands were introduced to fill in pric ...
replacing Oakland
Oakland is the largest city and the county seat of Alameda County, California, United States. A major West Coast port, Oakland is the largest city in the East Bay region of the San Francisco Bay Area, the third largest city overall in the Bay A ...
starting in 1926. Oldsmobile also used the A-body for the 1938-48 Series 60
The S60 Platform (formerly Series 60 User Interface) was a software platform for smartphones that runs on top of the Symbian operating system. It was created by Nokia based on the 'Pearl' user interface from Symbian Ltd. It was introduced at ...
. All Chevrolet
Chevrolet ( ), colloquially referred to as Chevy and formally the Chevrolet Motor Division of General Motors Company, is an American automobile division of the American manufacturer General Motors (GM). Louis Chevrolet (1878–1941) and ous ...
s produced during this period, to include the Chevrolet Master
The Chevrolet Master and Master Deluxe are American passenger vehicles manufactured by Chevrolet between 1933 and 1942 to replace the 1933 Master Eagle. It was the more expensive model in the Chevrolet range at this time, with the Standard Merc ...
and the Chevrolet Deluxe
The Chevrolet Deluxe is a trim line of Chevrolet automobiles that was marketed from 1941 to 1952, and was the volume sales leader for the market during the 1940s. The line included at first a 4-door sedan, but grew to include a fastback 2-door " ...
, and all 1936-39 Pontiacs, the 1940 Pontiac Special, the 1941 Pontiac Deluxe Torpedo and all Pontiac Torpedo Pontiac may refer to:
* Pontiac (automobile), a car brand
*Pontiac (Ottawa leader) ( – 1769), a Native American war chief
Places and jurisdictions Canada
* Pontiac, Quebec, a municipality
**Apostolic Vicariate of Pontiac, now the Roman Catholic ...
es produced from 1942 through 1948 were A-bodies.
From 1949 to 1957, only Chevrolets (150 150 may refer to:
*150 (number), a natural number
*AD 150, a year in the 2nd century AD
*150 BC, a year in the 2nd century BC
*150 Regiment RLC
*Combined Task Force 150
See also
* List of highways numbered 150
The following highways are numbered ...
, 210, Bel Air, Del Ray) and Pontiacs (Chieftain
A tribal chief or chieftain is the leader of a tribe, tribal society or chiefdom.
Tribe
The concept of tribe is a broadly applied concept, based on tribal concepts of societies of western Afroeurasia.
Tribal societies are sometimes categori ...
, Star Chief, Super Chief
The ''Super Chief'' was one of the named passenger trains and the flagship of the Atchison, Topeka and Santa Fe Railway. The streamliner claimed to be "The Train of the Stars" because of the various celebrities it carried between Chicago, Ill ...
) were built on the A-body. These cars were moved to the new B Body shared with some Buicks and Oldsmobiles in 1958, and all truck
A truck or lorry is a motor vehicle designed to transport cargo, carry specialized payloads, or perform other utilitarian work. Trucks vary greatly in size, power, and configuration, but the vast majority feature body-on-frame construction ...
conversions were replaced by the C/K series in 1960.
Vehicles underpinned
* 1923-1926Chevrolet Superior
The Chevrolet Superior Series F was launched in 1923, manufactured by Chevrolet for four years with a different series per year. The 1923 model was known as the Series B, the 1924 model was the Series F, for 1925 it was known as the Series K and ...
* 1923-1931 GM Oakland
* 1933-1942 Chevrolet Master
The Chevrolet Master and Master Deluxe are American passenger vehicles manufactured by Chevrolet between 1933 and 1942 to replace the 1933 Master Eagle. It was the more expensive model in the Chevrolet range at this time, with the Standard Merc ...
* 1936-1939 Oldsmobile Series F
* 1940-1948 Oldsmobile Series 60
The Series 60 "Special" is a full-size car made by Oldsmobile from the 1939 through the 1948 model years. It was their entry-level model using the GM "A" body platform, giving Oldsmobile an entry level product with more standard features that woul ...
* 1941-1952 Chevrolet Deluxe
The Chevrolet Deluxe is a trim line of Chevrolet automobiles that was marketed from 1941 to 1952, and was the volume sales leader for the market during the 1940s. The line included at first a 4-door sedan, but grew to include a fastback 2-door " ...
* 1941-1947 Chevrolet A/K Series
* 1941-1947 GMC A/K Series
* 1946-1948 Chevrolet Stylemaster
* 1946-1948 Chevrolet Fleetmaster
* 1947-1955 Chevrolet Advance Design
The Advance-Design is a light and medium duty truck series by Chevrolet, their first major redesign after WWII. Its GMC counterpart was the GMC New Design. It was billed as a larger, stronger, and sleeker design in comparison to the earlier AK ...
* 1947-1955 GMC New Design
* 1949-1950 Oldsmobile 88
The Oldsmobile 88 (marketed from 1989 on as the Eighty Eight) is a full-size car that was sold and produced by Oldsmobile from 1949 until 1999. From 1950 until 1974, the 88 was the division's most profitable line, particularly the entry level mod ...
* 1949-1949 Oldsmobile 76
* 1926-1940 Pontiac Six
The Pontiac Six was a more affordable version of its predecessor Oakland Six that was introduced in 1926, sold through Oakland Dealerships. Pontiac was the first of General Motors companion make program where brands were introduced to fill in pric ...
* 1949-1957 Pontiac Chieftain
The Pontiac Chieftain is an automobile which was produced by Pontiac (automobile), Pontiac from 1949 to 1958. The 1949 Chieftain and Pontiac Streamliner, Streamliner models were the first all new car designs to come from Pontiac in the post World W ...
* 1950-1958 Pontiac Catalina
The Pontiac Catalina is a full-size, junior series automobile produced by Pontiac from 1950 to 1981. Initially, the name was a trim line on hardtop body styles, first appearing in the 1950 Chieftain Eight and DeLuxe Eight lines. In 1959, it becam ...
* 1954-1957 Pontiac Star Chief
* 1955-1959 Chevrolet Task Force Series
* 1955-1959 GMC Blue Chip Series
1964–1967
The A-body platform was reintroduced as an intermediate-sized platform introduced in the 1964 model year for two redesigned and two new mid-sized cars from four of GM divisions. Notable examples include the FR layout
In automotive design, a FR, or front-engine, rear-wheel-drive layout is one where the Internal combustion engine, engine is Front-engine design, located at the front of the vehicle and rear-wheel-drive, driven wheels are located at the rear via a ...
Chevrolet Chevelle
The Chevrolet Chevelle is a mid-sized automobile that was produced by Chevrolet in three generations for the 1964 through 1978 model years. Part of the General Motors (GM) A-body platform, the Chevelle was one of Chevrolet's most successful ...
, Buick Special
The Buick Special was an automobile produced by Buick. It was usually Buick's lowest-priced model, starting out as a full-size car in 1936 and returning in 1961 (after a two-year hiatus) as a mid-size. The Special was built for several decades and ...
, Oldsmobile Cutlass
The Oldsmobile Cutlass was a series of automobiles produced by General Motors' Oldsmobile division between 1961 and 1999. At its introduction, the Cutlass was Oldsmobile's entry-level model; it began as a unibody compact car, but saw its greates ...
and Pontiac Tempest. The A-body cars were the first intermediate-sized cars designed with a full perimeter frame and four-link coil-spring rear suspension, similar to that introduced on full-sized Pontiac Pontiac may refer to:
*Pontiac (automobile), a car brand
*Pontiac (Ottawa leader) ( – 1769), a Native American war chief
Places and jurisdictions Canada
*Pontiac, Quebec, a municipality
** Apostolic Vicariate of Pontiac, now the Roman Catholic D ...
s and Oldsmobile
Oldsmobile or formally the Oldsmobile Division of General Motors was a brand of American automobiles, produced for most of its existence by General Motors. Originally established as "Olds Motor Vehicle Company" by Ransom E. Olds in 1897, it produ ...
s in 1961 and on all other GM full-sized cars in 1965.
The Chevrolet A-body line included the El Camino coupe utility
A coupe or coupé (, ) is a passenger car with a sloping or truncated rear roofline and two doors.
The term ''coupé'' was first applied to horse-drawn carriages for two passengers without rear-facing seats. It comes from the French past parti ...
. Two station wagons based on the A-body used stretched wheelbases and raised rear roof sections with skylights: the 1964–1972 Oldsmobile Vista Cruiser
The Oldsmobile Vista Cruiser is a station wagon manufactured and marketed by Oldsmobile over three generations from 1964 to 1977.
The first and second generation Vista Cruisers are noted for their fixed-glass, roof-mounted skylights over the sec ...
and the 1964–69 Buick Sport Wagon
The Buick Sport Wagon was a mid-size station wagon built by Buick and was shared with the Oldsmobile Vista Cruiser, Pontiac Tempest Safari and Chevrolet Chevelle Greenbrier. Featuring a raised roof and skylights over the cargo and second seat ...
.
All A-body cars had a wheelbase except the stretched-wheelbase wagons, which were .
Some of GM's most successful products in the muscle car
Muscle car is a description according to ''Merriam-Webster Dictionary'' that came to use in 1966 for "a group of American-made two-door sports coupes with powerful engines designed for high-performance driving." The '' Britannica Dictionary'' ...
era were A-body models, including the Pontiac GTO
The Pontiac GTO is an automobile that was manufactured by American automaker Pontiac from 1963 to 1974 for the 1964 to 1974 model years, and by GM's subsidiary Holden in Australia for the 2004 to 2006 model years.
The first generation of the G ...
, Chevrolet Malibu
The Chevrolet Malibu is a mid-size car manufactured and marketed by Chevrolet from 1964 to 1983 and again since 1997. The Malibu began as a trim-level of the Chevrolet Chevelle, becoming its own model line in 1978. Originally a rear-wheel-drive ...
SS, Oldsmobile 442
The Oldsmobile 4-4-2 (also known as the 442) is a muscle car produced by Oldsmobile between the 1964 and 1987 model years. Introduced as an option package for US-sold F-85 and Cutlass models, it became a model in its own right from 1968 to 197 ...
and Buick GS. From 1964 to 1969, GM Canada produced a special-market version of the Chevelle called the Beaumont
Beaumont may refer to:
Places Canada
* Beaumont, Alberta
* Beaumont, Quebec
England
* Beaumont, Cumbria
* Beaumont, Essex
** Beaumont Cut, a canal closed in the 1930s
* Beaumont Street, Oxford
France (communes)
* Beaumont, Ardèche
* ...
, which included Pontiac-type trim and unique front grilles as well as taillight assemblies.
When the A-body cars were introduced in 1964, GM had set a corporate policy prohibiting V8 engines larger than in these models. However, Pontiac fitted its V8 in the Lemans to create the GTO — commonly considered the first popular muscle car. Though this violated the 330 cu in limit, Pontiac got around the rules by designating the GTO as a low-volume option package rather than a specific model. The sales success of the 1964 GTO led the corporation to increase the cubic inch limit for 1965 A-body cars to , opening the door for the other three divisions to offer similar muscle cars. The 400 cu in limit for A-body cars, as well as for other GM cars that were smaller than full-sized (with the exception of the Chevrolet Corvette), was continued through the 1969 model year.
Vehicles underpinned
* 1964-1969Beaumont
Beaumont may refer to:
Places Canada
* Beaumont, Alberta
* Beaumont, Quebec
England
* Beaumont, Cumbria
* Beaumont, Essex
** Beaumont Cut, a canal closed in the 1930s
* Beaumont Street, Oxford
France (communes)
* Beaumont, Ardèche
* ...
* 1964-1967 Buick Sport Wagon
The Buick Sport Wagon was a mid-size station wagon built by Buick and was shared with the Oldsmobile Vista Cruiser, Pontiac Tempest Safari and Chevrolet Chevelle Greenbrier. Featuring a raised roof and skylights over the cargo and second seat ...
* 1964-1967 Buick Skylark
The Buick Skylark is a passenger car formerly produced by Buick. The model was made in six production runs, during 46 years, over which the car's design varied dramatically due to changing technology, tastes, and new standards implemented over ...
* 1964-1969 Buick Special
The Buick Special was an automobile produced by Buick. It was usually Buick's lowest-priced model, starting out as a full-size car in 1936 and returning in 1961 (after a two-year hiatus) as a mid-size. The Special was built for several decades and ...
* 1964-1967 Chevrolet Chevelle
The Chevrolet Chevelle is a mid-sized automobile that was produced by Chevrolet in three generations for the 1964 through 1978 model years. Part of the General Motors (GM) A-body platform, the Chevelle was one of Chevrolet's most successful ...
* 1964-1967 Chevrolet El Camino
The Chevrolet El Camino is a coupé utility vehicle that was produced by Chevrolet between 1959–60 and 1964–1987. Unlike a standard pickup truck, the El Camino was adapted from the standard two-door Chevrolet station wagon platform and integ ...
* 1964-1967 Oldsmobile Vista Cruiser
The Oldsmobile Vista Cruiser is a station wagon manufactured and marketed by Oldsmobile over three generations from 1964 to 1977.
The first and second generation Vista Cruisers are noted for their fixed-glass, roof-mounted skylights over the sec ...
* 1964-1967 Oldsmobile 442
The Oldsmobile 4-4-2 (also known as the 442) is a muscle car produced by Oldsmobile between the 1964 and 1987 model years. Introduced as an option package for US-sold F-85 and Cutlass models, it became a model in its own right from 1968 to 197 ...
* 1964-1967 Oldsmobile Cutlass
The Oldsmobile Cutlass was a series of automobiles produced by General Motors' Oldsmobile division between 1961 and 1999. At its introduction, the Cutlass was Oldsmobile's entry-level model; it began as a unibody compact car, but saw its greates ...
and F-85
* 1964-1967 Pontiac GTO
The Pontiac GTO is an automobile that was manufactured by American automaker Pontiac from 1963 to 1974 for the 1964 to 1974 model years, and by GM's subsidiary Holden in Australia for the 2004 to 2006 model years.
The first generation of the G ...
* 1964-1967 Pontiac Tempest
* 1964-1967 Pontiac LeMans
The Pontiac LeMans is a model name that was applied to subcompact- and intermediate-sized automobiles marketed by Pontiac from 1961 to 1981 (1983 in Canada) model years. Originally a trim upgrade based on the Tempest, it became a separate mod ...
* 1966-1967 Oldsmobile Cutlass Supreme
The Oldsmobile Cutlass Supreme is a mid-size car produced by Oldsmobile between 1966 and 1997. It was positioned as a premium offering at the top of the Cutlass range. It began as a trim package, developed its own roofline, and rose during the mi ...
1968-1972
All GM A-bodies were completely restyled in 1968. The 400 cu in limit remained. It was removed in 1970, mainly due to Chrysler's domination in the drag racing and muscle car market with larger engines and highest power rated engines available in nearly all Chrysler "B" platform models. This led each of the four GM divisions to offer their largest engines: Chevrolet
Chevrolet ( ), colloquially referred to as Chevy and formally the Chevrolet Motor Division of General Motors Company, is an American automobile division of the American manufacturer General Motors (GM). Louis Chevrolet (1878–1941) and ous ...
's in the Chevelle SS-454, Pontiac Pontiac may refer to:
*Pontiac (automobile), a car brand
*Pontiac (Ottawa leader) ( – 1769), a Native American war chief
Places and jurisdictions Canada
*Pontiac, Quebec, a municipality
** Apostolic Vicariate of Pontiac, now the Roman Catholic D ...
's in the GTO, Oldsmobile
Oldsmobile or formally the Oldsmobile Division of General Motors was a brand of American automobiles, produced for most of its existence by General Motors. Originally established as "Olds Motor Vehicle Company" by Ransom E. Olds in 1897, it produ ...
's in the 442, and Buick
Buick () is a division of the American automobile manufacturer General Motors (GM). Started by automotive pioneer David Dunbar Buick in 1899, it was among the first American marques of automobiles, and was the company that established General ...
's in the GS.
The two-door had a wheelbase; four-door, station wagon, and the El Camino had a wheelbase; and the stretched-wheelbase wagon had a wheelbase. 1968 model year A-body 2-door hardtops and convertibles had a vent wing window assembly - 1969-72 models had a one piece door glass where GM's Astro Ventilation system (first used with the 1966 Buick Riviera) was phased in.
Also using a variation of the A-body chassis and suspension were the 1969-1972 Pontiac Grand Prix
The Grand Prix is a line of automobiles produced by the Pontiac Division of General Motors from 1962 until 2002 for coupes and 1989–2008 for sedans.
First introduced as a full-size performance coupe for the 1962 model year, the model varied ...
and 1970-1972 Chevrolet Monte Carlo
The Chevrolet Monte Carlo is a two-door coupe that was manufactured and marketed by the Chevrolet division of General Motors. Deriving its name from the city in Monaco, the Monte Carlo was marketed as the first personal luxury car of the Chevr ...
— both of which were marketed as intermediate-sized personal luxury cars and coded as G-body
The General Motors G platform (also called G-Body) automobile platform
A car platform is a shared set of common design, engineering, and production efforts, as well as major components, over a number of outwardly distinct models and even types o ...
cars. The Grand Prix had a wheelbase and the Monte Carlo had a wheelbase. When the A- and G-body cars were restyled for 1973, the G-body design was renamed the A-special body.
Vehicles underpinned
* 1968-1972Buick Skylark
The Buick Skylark is a passenger car formerly produced by Buick. The model was made in six production runs, during 46 years, over which the car's design varied dramatically due to changing technology, tastes, and new standards implemented over ...
* 1968-1972 Buick Sport Wagon
The Buick Sport Wagon was a mid-size station wagon built by Buick and was shared with the Oldsmobile Vista Cruiser, Pontiac Tempest Safari and Chevrolet Chevelle Greenbrier. Featuring a raised roof and skylights over the cargo and second seat ...
* 1968-1972 Chevrolet Chevelle
The Chevrolet Chevelle is a mid-sized automobile that was produced by Chevrolet in three generations for the 1964 through 1978 model years. Part of the General Motors (GM) A-body platform, the Chevelle was one of Chevrolet's most successful ...
* 1968-1972 Chevrolet El Camino
The Chevrolet El Camino is a coupé utility vehicle that was produced by Chevrolet between 1959–60 and 1964–1987. Unlike a standard pickup truck, the El Camino was adapted from the standard two-door Chevrolet station wagon platform and integ ...
* 1968-1972 Oldsmobile 442
The Oldsmobile 4-4-2 (also known as the 442) is a muscle car produced by Oldsmobile between the 1964 and 1987 model years. Introduced as an option package for US-sold F-85 and Cutlass models, it became a model in its own right from 1968 to 197 ...
* 1968-1972 Oldsmobile Cutlass
The Oldsmobile Cutlass was a series of automobiles produced by General Motors' Oldsmobile division between 1961 and 1999. At its introduction, the Cutlass was Oldsmobile's entry-level model; it began as a unibody compact car, but saw its greates ...
* 1968-1972 Oldsmobile Cutlass Supreme
The Oldsmobile Cutlass Supreme is a mid-size car produced by Oldsmobile between 1966 and 1997. It was positioned as a premium offering at the top of the Cutlass range. It began as a trim package, developed its own roofline, and rose during the mi ...
* 1968-1972 Oldsmobile Vista Cruiser
The Oldsmobile Vista Cruiser is a station wagon manufactured and marketed by Oldsmobile over three generations from 1964 to 1977.
The first and second generation Vista Cruisers are noted for their fixed-glass, roof-mounted skylights over the sec ...
* 1968-1972 Pontiac GTO
The Pontiac GTO is an automobile that was manufactured by American automaker Pontiac from 1963 to 1974 for the 1964 to 1974 model years, and by GM's subsidiary Holden in Australia for the 2004 to 2006 model years.
The first generation of the G ...
* 1968-1970 Pontiac Tempest
* 1968-1972 Pontiac LeMans
The Pontiac LeMans is a model name that was applied to subcompact- and intermediate-sized automobiles marketed by Pontiac from 1961 to 1981 (1983 in Canada) model years. Originally a trim upgrade based on the Tempest, it became a separate mod ...
* 1971-1972 GMC Sprint
The GMC Sprint is a coupe utility/ pickup that was produced by GMC for the 1971–1977 model years. The Sprint was renamed Caballero for the 1978 model year, and produced through 1987. The rear-wheel-drive car-based pickups were sold by GMC Truck ...
1973–1977
All GM A- and A-special body cars were completely restyled for 1973 with hardtop and convertible bodystyles eliminated due to pending Federal safety regulations. The 1973-77 cars were available in sedans, coupes and station wagons. General Motors described the pillared bodystyles with frameless doors and windows as "Colonnade" styling. Wheelbases for this generation were 112 for two-door coupes and 116 for four-door sedans and wagons. By this time, the American performance car was considered extinct, but these "forgotten years" had some performance left. *1973Pontiac LeMans
The Pontiac LeMans is a model name that was applied to subcompact- and intermediate-sized automobiles marketed by Pontiac from 1961 to 1981 (1983 in Canada) model years. Originally a trim upgrade based on the Tempest, it became a separate mod ...
with the GTO option and the Pontiac Grand Am — Available with a 400 cid V8 which was available with a 3-speed (LeMans, GTO) or 4-speed manual (LeMans, GTO, Grand Am) transmission or an automatic (LeMans, GTO, Grand Am), or a 455 with an automatic transmission only. Also announced for the '73 GTO and Grand Am was the Super Duty 455 V8, which was rated at . ''Cars'' magazine tested an SD-455-equipped 1973 Pontiac GTO
The Pontiac GTO is an automobile that was manufactured by American automaker Pontiac from 1963 to 1974 for the 1964 to 1974 model years, and by GM's subsidiary Holden in Australia for the 2004 to 2006 model years.
The first generation of the G ...
and chose it as Car Of The Year Car of the Year (COTY) is a common abbreviation for numerous automotive awards.
The "Car of the Year" phrase is considered to have been introduced by ''Motor Trend'' magazine in 1949 when the new publication named Cadillac as Motor Trend Car of th ...
, yet that engine never made it to production in a GTO or other Pontiac A-body, but would be limited to the Firebird Formula and Trans Am.
*1973 Chevrolet Chevelle SS and 1974-1976 Chevelle Laguna S-3 — Offered with a 350 small block or 454 big block V8 with up to and mated to manual or automatic transmissions. The SS was replaced for 1974 by the Laguna Type S-3 which offered the same engine/transmission offerings as the '73 SS plus the addition of a 400 small block V8, along with a urethane front end surrounding the grillework. The 1975-76 Laguna S-3 featured a more aerodynamic slanted front end but engines were further detuned due to emission requirements and the advent of the catalytic converter, leaving the big 454 V8 unavailable for California cars in 1975 and discontinued altogether for 1976, when the small block 400 V8 was the top engine.
*1973-1974 Buick Century GS — Still available with the Stage 1 455 cid V8 rated at 270 net horsepower, mated to either a Turbo 400 or four-speed manual transmission, the latter transmission reportedly only installed in seven cars that year. The '74 Stage 1 455 was only available with the Turbo 400 automatic and detuned to . This engine was also offered on other Buicks in 1974 including the Riviera, LeSabre and Electra.
*1973-1975 Oldsmobile Cutlass Hurst/Olds W-30 — These were built using 455 cid V8 engines in the W-30 trim. This engine was also available as an option on the Olds 442 of those years along with other Cutlass models.
*1976 Buick Century Turbo — These were originally built as Indianapolis Pace Car replicas with a turbocharged
In an internal combustion engine, a turbocharger (often called a turbo) is a forced induction device that is powered by the flow of exhaust gases. It uses this energy to compress the intake gas, forcing more air into the engine in order to pro ...
and carbureted
A carburetor (also spelled carburettor) is a device used by an internal combustion engine to control and mix air and fuel entering the engine. The primary method of adding fuel to the intake air is through the venturi tube in the main meteri ...
3.8 L V6, and were faster than the 455 V8 version of that year. There were only a little over 1,200 built.
*1977 Pontiac Can-Am — This car was basically a LeMans Sport Coupe with a Grand Prix
Grand Prix ( , meaning ''Grand Prize''; plural Grands Prix), is a name sometimes used for competitions or sport events, alluding to the winner receiving a prize, trophy or honour
Grand Prix or grand prix may refer to:
Arts and entertainment ...
interior and a Trans Am
Trans Am may refer to:
* Pontiac Firebird Trans Am, an automobile model
* Trans Am (band), an American post-rock band
** ''Trans Am'' (album), their 1996 debut album
*** ''Trans Am'' (1996 song), their eponymous song from the eponymous album, see ...
"Shaker" hood, a one-off wing and a 400 cid V8 rated at with federal emissions, or an Oldsmobile 403 with California emissions. Only 1,100 or so of these were made and are getting quite collectible.
Vehicles underpinned
* 1973-1977Buick Century
Buick Century is the model name that was used by Buick for a line of upscale full-size cars from 1936 to 1942 and 1954 to 1958, as well as from 1973 to 2005 for mid-size cars.
The first Buick Century debuted as the Series 60 then renamed in 19 ...
* 1973-1977 Buick Regal
The Buick Regal is a line of mid-size cars marketed by Buick since 1973. For nearly its entire production, the Regal has served as the premium mid-size/intermediate offering of the Buick product range. Introduced as a submodel of the Buick Cent ...
* 1973-1977 Chevrolet Chevelle
The Chevrolet Chevelle is a mid-sized automobile that was produced by Chevrolet in three generations for the 1964 through 1978 model years. Part of the General Motors (GM) A-body platform, the Chevelle was one of Chevrolet's most successful ...
* 1973-1977 Chevrolet El Camino
The Chevrolet El Camino is a coupé utility vehicle that was produced by Chevrolet between 1959–60 and 1964–1987. Unlike a standard pickup truck, the El Camino was adapted from the standard two-door Chevrolet station wagon platform and integ ...
* 1973-1977Chevrolet Monte Carlo
The Chevrolet Monte Carlo is a two-door coupe that was manufactured and marketed by the Chevrolet division of General Motors. Deriving its name from the city in Monaco, the Monte Carlo was marketed as the first personal luxury car of the Chevr ...
* 1973-1977 GMC Sprint
The GMC Sprint is a coupe utility/ pickup that was produced by GMC for the 1971–1977 model years. The Sprint was renamed Caballero for the 1978 model year, and produced through 1987. The rear-wheel-drive car-based pickups were sold by GMC Truck ...
* 1973-1977 Oldsmobile 442
The Oldsmobile 4-4-2 (also known as the 442) is a muscle car produced by Oldsmobile between the 1964 and 1987 model years. Introduced as an option package for US-sold F-85 and Cutlass models, it became a model in its own right from 1968 to 197 ...
* 1973-1977 Oldsmobile Cutlass
The Oldsmobile Cutlass was a series of automobiles produced by General Motors' Oldsmobile division between 1961 and 1999. At its introduction, the Cutlass was Oldsmobile's entry-level model; it began as a unibody compact car, but saw its greates ...
* 1973-1977 Oldsmobile Cutlass Supreme
The Oldsmobile Cutlass Supreme is a mid-size car produced by Oldsmobile between 1966 and 1997. It was positioned as a premium offering at the top of the Cutlass range. It began as a trim package, developed its own roofline, and rose during the mi ...
* 1973-1977 Pontiac Grand Am
The Pontiac Grand Am is a mid-size car and later a compact car that was produced by Pontiac. The Grand Am had two separate three-year runs in the 1970s: from 1973 to 1975, and again from 1978 to 1980. It was based on the GM A platform. Productio ...
* 1973-1977 Pontiac Grand Prix
The Grand Prix is a line of automobiles produced by the Pontiac Division of General Motors from 1962 until 2002 for coupes and 1989–2008 for sedans.
First introduced as a full-size performance coupe for the 1962 model year, the model varied ...
* 1973-1977 Pontiac LeMans
The Pontiac LeMans is a model name that was applied to subcompact- and intermediate-sized automobiles marketed by Pontiac from 1961 to 1981 (1983 in Canada) model years. Originally a trim upgrade based on the Tempest, it became a separate mod ...
* 1977-1977 Pontiac Can Am
The Pontiac Can Am is a midsize muscle car built by Pontiac and based on the Pontiac LeMans and the Pontiac Grand Am. The Can Am was a special edition option package and was only available in 1977. It was named for the Can Am racing series, c ...
1978–1981
All GM intermediate-sized cars were downsized for the 1978 model year in response to CAFE requirements and the increased popularity of smaller cars. The redesigned models were similar in size to the previous X-bodies.
The Buick and Oldsmobile were introduced with fastback
A fastback is an automotive styling feature, defined by the rear of the car having a single slope from the roof to the tail. The kammback is a type of fastback style.
Some models, such as the Ford Mustang, have been specifically marketed as ...
coupe styles, while the Chevrolet and Pontiac received notchbacks. Four-door fastback sedan models were also available. An interesting design compromise was non-lowering rear door windows on four-door sedans and wagons, which also reverted to full window frames while two-door models including the El Camino retained frameless glass. Performance applications included the Chevrolet Malibu
The Chevrolet Malibu is a mid-size car manufactured and marketed by Chevrolet from 1964 to 1983 and again since 1997. The Malibu began as a trim-level of the Chevrolet Chevelle, becoming its own model line in 1978. Originally a rear-wheel-drive ...
F41 and M80, Pontiac LeMans
The Pontiac LeMans is a model name that was applied to subcompact- and intermediate-sized automobiles marketed by Pontiac from 1961 to 1981 (1983 in Canada) model years. Originally a trim upgrade based on the Tempest, it became a separate mod ...
GT, Oldsmobile 442
The Oldsmobile 4-4-2 (also known as the 442) is a muscle car produced by Oldsmobile between the 1964 and 1987 model years. Introduced as an option package for US-sold F-85 and Cutlass models, it became a model in its own right from 1968 to 197 ...
and Oldsmobile Hurst/Olds.
In 1982, with the introduction of the new front-wheel drive
Front-wheel drive (FWD) is a form of engine and transmission layout used in motor vehicles, where the engine drives the front wheels only. Most modern front-wheel drive vehicles feature a transverse engine, rather than the conventional longit ...
A-body, existing rear-wheel drive models were given the G-body
The General Motors G platform (also called G-Body) automobile platform
A car platform is a shared set of common design, engineering, and production efforts, as well as major components, over a number of outwardly distinct models and even types o ...
designation.
Vehicles underpinned
* 1978-1980Chevrolet Monte Carlo
The Chevrolet Monte Carlo is a two-door coupe that was manufactured and marketed by the Chevrolet division of General Motors. Deriving its name from the city in Monaco, the Monte Carlo was marketed as the first personal luxury car of the Chevr ...
* 1978-1981 GMC Caballero
Caballero (plural: Caballeros), the Spanish word for ''knight'' or ''gentleman'', is used as a form of address for older gentlemen and may refer to:
Places
* Caballero, Coclé, Panama
* Pedro Juan Caballero, Paraguay, a city
* Santiago de los Cab ...
* 1978-1981 Buick Century
Buick Century is the model name that was used by Buick for a line of upscale full-size cars from 1936 to 1942 and 1954 to 1958, as well as from 1973 to 2005 for mid-size cars.
The first Buick Century debuted as the Series 60 then renamed in 19 ...
* 1978-1981 Buick Regal
The Buick Regal is a line of mid-size cars marketed by Buick since 1973. For nearly its entire production, the Regal has served as the premium mid-size/intermediate offering of the Buick product range. Introduced as a submodel of the Buick Cent ...
* 1978-1981 Chevrolet El Camino
The Chevrolet El Camino is a coupé utility vehicle that was produced by Chevrolet between 1959–60 and 1964–1987. Unlike a standard pickup truck, the El Camino was adapted from the standard two-door Chevrolet station wagon platform and integ ...
* 1978-1981 Chevrolet Malibu
The Chevrolet Malibu is a mid-size car manufactured and marketed by Chevrolet from 1964 to 1983 and again since 1997. The Malibu began as a trim-level of the Chevrolet Chevelle, becoming its own model line in 1978. Originally a rear-wheel-drive ...
* 1978-1981 Oldsmobile Cutlass Supreme
The Oldsmobile Cutlass Supreme is a mid-size car produced by Oldsmobile between 1966 and 1997. It was positioned as a premium offering at the top of the Cutlass range. It began as a trim package, developed its own roofline, and rose during the mi ...
* 1978-1981 Oldsmobile Cutlass
The Oldsmobile Cutlass was a series of automobiles produced by General Motors' Oldsmobile division between 1961 and 1999. At its introduction, the Cutlass was Oldsmobile's entry-level model; it began as a unibody compact car, but saw its greates ...
* 1978-1981 Pontiac LeMans
The Pontiac LeMans is a model name that was applied to subcompact- and intermediate-sized automobiles marketed by Pontiac from 1961 to 1981 (1983 in Canada) model years. Originally a trim upgrade based on the Tempest, it became a separate mod ...
* 1978-1981 Pontiac Grand Prix
The Grand Prix is a line of automobiles produced by the Pontiac Division of General Motors from 1962 until 2002 for coupes and 1989–2008 for sedans.
First introduced as a full-size performance coupe for the 1962 model year, the model varied ...
* 1978-1981 Pontiac Grand Am
The Pontiac Grand Am is a mid-size car and later a compact car that was produced by Pontiac. The Grand Am had two separate three-year runs in the 1970s: from 1973 to 1975, and again from 1978 to 1980. It was based on the GM A platform. Productio ...
References
List of GM VIN codes
{{DEFAULTSORT:Gm A Platform (Rwd) A 1