List of GM bellhousing patterns
Encyclopedia
The following is a list of GM bellhousing patterns. Though General Motors
has manufactured many different engines, it has kept variance in the bell housing
patterns to a relative minimum.
This pattern has a distinctive odd-sided hexagonal shape. Rear wheel drive applications have the starter mounted on the right side of the block (when viewed from the flywheel) and on the opposite side of the block than front wheel drive. The 2.2l S10/Sonoma had the starter located in the same position as front wheel drive cars. A rear wheel drive bellhousing is dispayed at right.
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General Motors
General Motors Company , commonly known as GM, formerly incorporated as General Motors Corporation, is an American multinational automotive corporation headquartered in Detroit, Michigan and the world's second-largest automaker in 2010...
has manufactured many different engines, it has kept variance in the bell housing
Bell housing
"Bell housing" is a colloquial/slang term for the portion of the transmission that covers the flywheel and the clutch or torque converter of the transmission on vehicles powered by internal combustion engines. This housing is bolted to the engine block and derives its name from the bell-like...
patterns to a relative minimum.
Chevrolet V8 pattern
So named because it began with Chevrolet's V8 engines.- Chevrolet big-block V8'sChevrolet Big-Block engineThe Chevrolet big block is a series of large displacement V8 engines that were developed in the USA during the 1950s and 1960s. As American automobiles grew in size and weight following the Second World War the engines powering them had to keep pace...
- Chevrolet small-block V8'sChevrolet Small-Block engineThe Chevrolet small-block engine is a series of automobile V8 engines built by the Chevrolet Division of General Motors using the same basic small engine block...
- GM Vortec 4300 90° V6
- GM Iron DukeGM Iron Duke engineIron Dukes were fitted with fuel injection in 1982. This version was christened the Tech IV, though Car and Driver later ridiculed it as the low-Tech IV. Power output remained at ....
RWD inline 4 (Early RWD Variants, later versions may use a FWD pattern, and have two possible starter locations) - JeepJeepJeep is an automobile marque of Chrysler . The first Willys Jeeps were produced in 1941 with the first civilian models in 1945, making it the oldest off-road vehicle and sport utility vehicle brand. It inspired a number of other light utility vehicles, such as the Land Rover which is the second...
with GM Iron Duke inline 4 2.5L/151 in³ (1980-1983). These use a Chrysler custom TorquefliteTorqueFliteTorqueFlite is the trademarked name of Chrysler Corporation's automatic transmissions, starting with the three-speed unit introduced late in the 1956 model year as a successor to Chrysler's two-speed PowerFlite...
904 automatic transmission with an integral Chevrolet bellhousing. Do not confuse with later AMC 2.5 L engine that uses GM small corporate pattern (see below). - Chevrolet Inline 6 (1963 on)
- Chevrolet 153 Inline 4 (Chevy II, pre-Iron-Duke - includes the Vortec 3000/181 industrial/marine crate motor)
- GM Atlas engineGM Atlas engineAtlas is a name for a family of modern inline piston engines for trucks from General Motors. The series debuted in 2002 with the Oldsmobile Bravada, and is also used in the Chevrolet TrailBlazer and Colorado and their GMC twins, the Envoy and Canyon...
GM metric pattern
- Also called the GM small corporate pattern and the S10 pattern
This pattern has a distinctive odd-sided hexagonal shape. Rear wheel drive applications have the starter mounted on the right side of the block (when viewed from the flywheel) and on the opposite side of the block than front wheel drive. The 2.2l S10/Sonoma had the starter located in the same position as front wheel drive cars. A rear wheel drive bellhousing is dispayed at right.
- GMGeneral MotorsGeneral Motors Company , commonly known as GM, formerly incorporated as General Motors Corporation, is an American multinational automotive corporation headquartered in Detroit, Michigan and the world's second-largest automaker in 2010...
2.8/3.1/3.4/3.5/3.9GM 60-Degree V6 engineThe General Motors 60° V6 family of engines began with the 1980 Chevrolet 2.8 L V6 and continues to be produced today . Its use in the X-body cars leads some to refer to it as the X engine.It is a 60° vee block with pushrod heads, except for a single DOHC member, the LQ1...
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V6 (also used by AMC) - BuickBuickBuick is a premium brand of General Motors . Buick models are sold in the United States, Canada, Mexico, China, Taiwan, and Israel, with China being its largest market. Buick holds the distinction as the oldest active American make...
3300/3800Buick V6 engineThe Buick V6, initially marketed as Fireball at its introduction in 1962, was a large V6 engine used by General Motors. The block is made of cast iron and all use two-valve-per-cylinder iron heads, actuated by pushrods....
V6 - CadillacCadillacCadillac is an American luxury vehicle marque owned by General Motors . Cadillac vehicles are sold in over 50 countries and territories, but mostly in North America. Cadillac is currently the second oldest American automobile manufacturer behind fellow GM marque Buick and is among the oldest...
4.1/4.5/4.9 L V8 - IsuzuIsuzu, is a Japanese car, commercial vehicle and heavy truck manufacturing company, headquartered in Tokyo. In 2005, Isuzu became the world's largest manufacturer of medium to heavy duty trucks. It has assembly and manufacturing plants in the Japanese city of Fujisawa, as well as in the prefectures...
3.5L DOHC V6 - AMC/ChryslerChryslerChrysler Group LLC is a multinational automaker headquartered in Auburn Hills, Michigan, USA. Chrysler was first organized as the Chrysler Corporation in 1925....
2.5L I4 found in JeepJeepJeep is an automobile marque of Chrysler . The first Willys Jeeps were produced in 1941 with the first civilian models in 1945, making it the oldest off-road vehicle and sport utility vehicle brand. It inspired a number of other light utility vehicles, such as the Land Rover which is the second...
CherokeeJeep CherokeeJeep Cherokee may refer to:* Jeep Cherokee * Jeep Cherokee * Jeep Grand Cherokee , , and * Jeep Liberty, a.k.a. Jeep Cherokee...
, ComancheJeep ComancheThe Jeep Comanche is a pickup truck version of the Cherokee compact SUV that was produced from 1985 to 1992. Rear wheel and four-wheel drive models were available, as well as two cargo box lengths of six-feet or seven-feet .-Introduction:During the mid-1980s, according to AMC Chairman W...
, WagoneerJeep WagoneerThe Jeep Wagoneer was an early sport utility vehicle and the first luxury 4x4, produced under varying marques from 1963 to 1991. It was noteworthy for being in production for more than 28 years with only minor mechanical changes...
, CJJeep CJThe Willys CJ is a public version of the famous Willys Military Jeep from World War II.The first CJ prototype was introduced in 1944 by Willys, and the same basic vehicle stayed in production through seven variants and three corporate parents until 1986.A variant of the CJ is still in production...
and WranglerJeep WranglerThe Jeep Wrangler is a subcompact four-wheel drive sport utility vehicle and an off-road vehicle manufactured by American automaker Chrysler, under its Jeep marque – and now in its fourth generation. It is a successor to the famous World War II 'Jeep' vehicle by way of the Willys civilian...
and DodgeDodgeDodge is a United States-based brand of automobiles, minivans, and sport utility vehicles, manufactured and marketed by Chrysler Group LLC in more than 60 different countries and territories worldwide....
DakotaDodge DakotaThe Dodge Dakota is a mid-size pickup truck from Chrysler's Ram division. From its introduction through 2009, it was marketed by Dodge. The first Dakota was introduced in 1986 as a 1987 model alongside the redesigned Dodge Ram 50... - GM Iron DukeGM Iron Duke engineIron Dukes were fitted with fuel injection in 1982. This version was christened the Tech IV, though Car and Driver later ridiculed it as the low-Tech IV. Power output remained at ....
/Tech-4 2.5L I4 - GM "122"GM 122 engineThis engine family, produced by General Motors globally, was originally designed by Opel in Germany. In OHV form, it was available in the US beginning in 1982 for the GM J platform compact cars and S-series trucks, although originally in use from the 1970s globally. It is different than the engine...
1.8/2.0/2.2 L I4 - GM 5.3L LS4 V8
Northstar pattern
Nearly identical to the GM small corporate/metric pattern, except that the starter is located between the cylinder banks, and the lower right bolt hole is moved outward by roughly one inch. Being nearly identical, it too has the distinctive odd-sided hexagonal shape. These engines can be fitted in Rear Wheel Drive vehicles with the right bellhousing and are used in hot rods, kit cars, sand rails and late model engine swapEngine swap
An engine swap is the process of removing a car's engine and replacing it with another. This is done either because of failure, or to install a different engine, usually one that is more powerful or more modern and maintainable....
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- All CadillacCadillacCadillac is an American luxury vehicle marque owned by General Motors . Cadillac vehicles are sold in over 50 countries and territories, but mostly in North America. Cadillac is currently the second oldest American automobile manufacturer behind fellow GM marque Buick and is among the oldest...
Northstar V8's - Oldsmobile AuroraOldsmobile AuroraThe Oldsmobile Aurora was a full-size sports sedan made by the Oldsmobile division of General Motors and launched in 1995. The Aurora rode on the same Cadillac-derived G platform as the 2-door Buick Riviera....
L47 V8 - Oldsmobile IntrigueOldsmobile IntrigueThe Oldsmobile Intrigue was a mid-size sedan manufactured from 1998 through 2002 by the Oldsmobile division of General Motors. The Intrigue's design cues were first seen in 1995 with the Oldsmobile Antares concept car...
LX5 V6
Pre 1964 Buick and Rover V-8 Round pattern
- 1961 through 1963 Buick/Oldsmobile/Pontiac 215 Aluminum V-8
- 1967 through 2004 Rover V-8Rover V8 engineThe Rover V8 engine is a compact V8 internal combustion engine with aluminium cylinder heads and cylinder block, originally designed by General Motors and later re-designed and produced by Rover in the United Kingdom...
based on the GM 215
Buick, Oldsmobile, Pontiac (BOP) V8 pattern
- Post-1965 Buick/Oldsmobile/Pontiac RWD V8's
- Buick Big Block's and post-1963 Small Block V8's
- Buick pre-3800 90° RWD V6's
- Jeep "Dauntless" 225 in³ oddfire V6 (1967-1974) and Buick 350 V8 (1969-1970)
- Cadillac cast iron V8s after 1967 (1968-85 472 and 500, 368 and 425)
- Starters are on the left (drivers) side on Olds 350-455 and Pontiac and the right (passenger) side on Cadillac 425/472/500 and Buick 225/231/3800/300/340/350/400/430/455.