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621 GM Bellhousing LS/SBC/BBC
This 621-style bellhousing is designed for use with passenger car transmissions and OEM-type starters that are compatible with an 11 in. clutch and 168-tooth flywheel. Otherwise, a mini starter is recommended. Mounting holes for transmission utilize a 7/16-14 in. thread. Designed to fit Small Block and Big Block Chevrolet applications going to a Tremec TKO, Muncie 4-Speed, Richmond or T10.
The Lakewood cast aluminum bellhousings connect Chevy small, big block, and LS engines to transmissions utilizing the standard GM pattern such as the Muncie, Saginaw, Borg Warner T10, and Tremec TKX or TKO transmissions. The bellhousings are designed for both GM cars and trucks and other manufacturers where swap applications are being installed.