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| The following is a '''list of GM bellhousing patterns'''. Though [[General Motors]] has [[List of GM engines|manufactured many different engines]], it has kept variance in the [[bell housing]] patterns to a relative minimum.
| | {{Commons cat|Cadillac engines}} |
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| ==Chevrolet V8 pattern==
| | [[Category:Automobile engines]] |
| So named because it began with Chevrolet's V8 engines.
| | [[Category:Cadillac]] |
| * Chevrolet [[Chevrolet_Big-Block_engine|big-block V8's]]
| | [[Category:GM engines]] |
| * Chevrolet [[Chevrolet_Small-Block_engine#350|small-block V8's]]
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| * GM [[GM_Vortec_engine#4300|Vortec 4300]] 90° V6
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| * GM [[GM_Iron_Duke_engine|Iron Duke]] RWD inline 4 (Early RWD Variants, later versions may use a FWD pattern, and have two possible starter locations)
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| * [[Jeep]] 2.5L/151 in³ Jeep used the GM Iron Duke inline 4 1980-1983. These use a Chrysler [[Torqueflite]] 904 automatic transmission with a Chevrolet bellhousing.
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| * Chevrolet Inline 6 (1963 on)
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| * Chevrolet 153 Inline 4 (Chevy II, pre-Iron-Duke)
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| ==GM metric pattern==
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| [[Image:GM_60deg_V6_bellhousing.JPG|thumb]]
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| :Also called the ''GM small corporate pattern''
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| This pattern has a distinctive odd-sided [[hexagonal]] shape.
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| * [[GM 60-Degree V6 engine|GM 60° V6 family]] FWD/RWD [[V6]]; 2.8/3.1/3.4 [[Liter|L]]
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| * [[Buick]] [[FWD]]/[[RWD]] 90° [[GM_3800_engine|3800]] V6
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| * [[Cadillac]] [[Cadillac_V8_engine#Aluminum_OHV|4.1/4.5/4.9]] [[Liter|L]] V8
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| * [[Isuzu]] 3.5L [[DOHC]] V6
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| * 1984-03 [[Jeep]]/[[American Motors Corporation|AMC]]/[[Chrysler]] 2.5L/150 in³ I4 found in Jeep Cherokee, Wagoneer, Comanche, and Wrangler models (except Grand Wagoneer & Grand Cherokee) and 1996-2002 [[Dodge]] Dakotas.
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| * Jeep/AMC 2.8L V6 (GM engine)
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| * GM [[GM_Iron_Duke_engine|Iron Duke]] FWD inline 4
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| * 1984-93 GM [[GM_Iron_Duke_engine|Iron Duke]]/Tech-4 RWD inline 4
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| ==Northstar pattern==
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| 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.
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| * All [[Cadillac]] [[GM Premium V engine#Northstar|Northstar]] V8's
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| * [[Oldsmobile Aurora]] [[GM_Premium_V_engine#L47|L47]] V8
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| * [[Oldsmobile Intrigue]] [[GM_Premium_V_engine#LX5|LX5]] V6
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| ==Pre 1965 Buick and Rover V-8 Round pattern==
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| *Buick/Oldsmobile/Pontiac 215 [[Buick_V8_engine#215|Aluminum V-8]]
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| *1967 through 2004 [[Rover_V8_engine|Rover V-8]] based on the GM 215
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| ==Buick, Oldsmobile, Pontiac (BOP) V8 pattern==
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| [[Image:225_231_jeep_buick_bellhousing.JPG|thumb]]
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| * Post-1965 Buick/Oldsmobile/Pontiac RWD V8's
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| * Buick [[GM_3800_engine#Fireball_V6|pre-3800]] 90° RWD V6's
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| * Jeep "Dauntless" 225 in³ [[V6#Odd_and_even_firing|oddfire]] V6 (1967-1974)
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| * Cadillac cast iron V8s after 1967 (1968-85 [[Cadillac V8 engine#472|472 and 500]], [[Cadillac V8 engine#425|368 and 425]])
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| * Starters are on the left side on Olds and Pontiac and the right on Cadillac and Buicks.
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| ==Cadillac V8 pattern, pre-1967==
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| Early Cadillacs manufactured before 1965 used a "round top" bellhousing much similar to early Buicks; around 1965, the bellhousing pattern was revised until the BOP bolt pattern was adopted in 1968.
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| ==GM 4-cylinder pattern==
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| * GM [[GM_Quad-4_engine|Quad-4]] family
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| ==GM Ecotec 4-cylinder pattern==
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| * GM [[GM_Family_II_engine#Ecotec|Ecotec Family II]]
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| ==External links==
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| *[http://members.shaw.ca/betterthanyoutoo/bellhousing/gm_bellhousing_bolt_patterns.htm List of bellhousing patterns]
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| *[http://www.tlc4x4.com/2000/Parts/tlc_engineinfo.htm More info on GM bellhousing interchange]
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| [[Category:GM engines|*]] | |
| [[Category:General Motors transmissions]]
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| [[Category:Interfaces]]
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