General Motors transmissions
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==Overview== | ==Overview== | ||
First, a transmission is a way of applying torque from an engine through a differential to a wheel, causing forward (or reverse) motion of a standing body. | First, a transmission is a way of applying torque from an engine through a differential to a wheel, causing forward (or reverse) motion of a standing body. | ||
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Starters are on the driver side on Olds 350-455 and Pontiac, and the passenger side on Cadillac 425/472/500 and Buick 225/231/300/340/350/400/430/455. | Starters are on the driver side on Olds 350-455 and Pontiac, and the passenger side on Cadillac 425/472/500 and Buick 225/231/300/340/350/400/430/455. | ||
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| + | ===Adaptors=== | ||
| + | TCI and Trans-Dapt make adapter plates for mounting a BOP transmission to a Chevy engine or vice versa. They are plenty sturdy for all but the most demanding circumstances, and the cost is relatively low. | ||
| + | [[File:Tci detail.jpg|thumb|300px|left|TCI adapter p/n 230001 for Buick, Cadillac, Oldsmobile, Pontiac engines to Chevy transmissions]]<br style="clear:both"/>[[File:WILCAP ADAPTOR EARLY HEMI TO TH350.jpg|200px|thumb|left|Wilcap adapter on early Hemi for using TH350 transmission]] Wilcap offers an adapter to mount the TH350 tranny to the early Chrysler Hemi (above).<br style="clear:both"/> | ||
===Uni-bell pattern=== | ===Uni-bell pattern=== | ||
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| − | ===GM | + | ===GM Ecotec=== |
* GM [http://en.wikipedia.org/wiki/GM_Family_II_engine#Ecotec Ecotech] DOHC inline 4 | * GM [http://en.wikipedia.org/wiki/GM_Family_II_engine#Ecotec Ecotech] DOHC inline 4 | ||
[[File:Ecotec2.jpg|thumb|center|400px|Ecotec pattern]] | [[File:Ecotec2.jpg|thumb|center|400px|Ecotec pattern]] | ||
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[[File:215 bell.jpg|thumb|300px|Buick/Rover aluminum V8 pattern]] | [[File:215 bell.jpg|thumb|300px|Buick/Rover aluminum V8 pattern]] | ||
| − | *1961 through 1963 Buick/Oldsmobile/Pontiac [http://en.wikipedia.org/wiki/Buick_V8_engine#215 | + | *1961 through 1963 Buick/Oldsmobile/Pontiac [http://en.wikipedia.org/wiki/Buick_V8_engine#215 215ci aluminum V8] |
| − | **Buick | + | **Buick 198ci V6 |
*1967 through 2004 [http://en.wikipedia.org/wiki/Rover_V8_engine Rover 3.5, 3.9, 4.0, 4.2, and 4.6L aluminum V8] (based on the 215 Buick aluminum V8) | *1967 through 2004 [http://en.wikipedia.org/wiki/Rover_V8_engine Rover 3.5, 3.9, 4.0, 4.2, and 4.6L aluminum V8] (based on the 215 Buick aluminum V8) | ||
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===Cadillac V8, pre-1968 pattern=== | ===Cadillac V8, pre-1968 pattern=== | ||
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| − | |[[File:331ID49-54.JPG|thumb|345px|center|Cad 1949-'54 | + | |[[File:331ID49-54.JPG|thumb|345px|center|Cad 1949-'54 331ci pattern. Note cast in partial bellhousing]] |
| − | |[[File:CADblockID.JPG|thumb|300px|center|Cad 1955-'64 331, 365, | + | |[[File:CADblockID.JPG|thumb|300px|center|Cad 1955-'64 331, 365, 390ci pattern]] |
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Early Cadillacs manufactured from 1949 to 1954 used a "round top" bellhousing partially cast into the block casting. Around 1955 the bellhousing pattern was revised until the BOP bolt pattern was adopted. | Early Cadillacs manufactured from 1949 to 1954 used a "round top" bellhousing partially cast into the block casting. Around 1955 the bellhousing pattern was revised until the BOP bolt pattern was adopted. | ||
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