NEW SWS CHEVY ALUMINUM BELLHOUSING, FLYWHEEL INSPECTION COVER, THROWOUT BEARING, CLUTCH FORK, CLUTCH FORK BOOT & CLUTCH PIVOT BALL, GM 621 3899621 REPLACEMENT FOR SBC & BBC FOR 11" MANUAL CLUTCH APPLICATIONS Brand New Southwest Speed Aluminum Bellhousing Kit with Throwout Bearing for use with 11" Clutches with Manual Transmission. The kit includes a replica GM 3899621 Bellhousing, Flywheel Inspection Cover, Clutch Fork with Ball Retaining Spring, Throwout Bearing, Clutch Fork Boot, and Clutch Fork Pivot Ball. (SWS Part # 650-3975, 650-3968, 650-4028, 650-4035, 650-3952, and 650-4018). This Southwest Speed 11" Performance Cast Aluminum Bellhousing is a reproduction of the original 3899621 bellhousing used on GM models with Big Block and Small Block engines equipped with an 11" clutch. This performance aluminum bellhousing does not have the GM Part # 3899621 casting number but will look, fit, and perform just like original. If you are doing a restoration of an early muscle car, or just want the correct bellhousing to finish that rod project, this bellhousing is the perfect part! Kit Includes: | * Southwest Speed Cast Aluminum Performance Bellhousing (# 650-3975) | * Replaces GM Part # 3899621 | * Cast Aluminum Housing | * Works with GM transmissions with a 4.675" O.D. Bearing Retainer | * Clears 168 tooth 14" Flywheels with factory 11" clutch discs | * 1/2"-13 tapped hole for z-bar manual clutch linkage, if needed. | * Fits ALL Small Block & Big Block Chevrolet engines regardless of factory clutch size | * Southwest Speed Flywheel Inspection Cover (# 650-3968) | * Replaces GM Part # 3843943 | * Includes 1/4" bolts to install inspection shield | * Exact Replica of the Original | * Southwest Speed Clutch Fork with Ball Retaining Spring (# 650-4028) | * Replaces GM Part # 3892632 | * Exact Replica of the Original | * Southwest Speed Throwout Bearing (# 650-4035) | * Replaces GM Part # 19245400 | * Exact Replica of the original | * Designed to effectively reduce friction | * Made of high quality materials for long service life | * Southwest Speed Clutch Fork Boot (# 650-3952) | * Replaces GM Part # 3993851 | * Exact Replica of the original | * Molded from E.P.D.M rubber for a snug fit that will last for years | * Southwest Speed Standard Clutch Fork Pivot Ball (# 650-4018) | * Replaces GM Part # 3729000 | * Installs into bellhousing to support clutch fork | * 13/16"-16 Threads, 1 1/2" total length end to end Fits: | * 1964 - 1988 Chevy Chevelle, Malibu, Monte Carlo* | * 1959 - 1987 Chevy El Camino* | * 1959 - 1988 Chevy Impala, Caprice, Bel Air, Biscayne, Brookwood, Kingswood, Nomad, Sedan Delivery* | * 1963 - 1981 Chevy Corvette* | * 1967 - 1981 Chevy Camaro* | * 1968 - 1974 Chevy II, Nova* | * *With Manual Transmissions and 168 tooth Flywheel The bellhousing was used with 4 speed transmissions in 66 - 72 Chevelle, 66 - 81 Corvette, 67 - 72 Camaro, 68 - 72 Nova, and 64 - 81 Impala, but with any GM transmission that measures 4.675" and an 11" clutch, it will fit great in all of the additional applications shown above, as well as many different types of projects. This will make it a snap to get that big GM bellhousing in your muscle car or rod project. This new Chevy high performance 11" style aluminum bellhousing was issued on Camaros, Chevelles, Impalas, Corvettes and Novas with big block 396, 427, and 454 engines, as well as Yenko, Copo, and ZL1 and also small blocks like 302, 327, 350 and 400 with the 168 tooth, 14" flywheels and 11" clutches, including Z28, Yenko, and Deuce models. Will accept your original Muncie or Saginaw Manual Transmission with a 4.675" O.D. bearing retainer. Will even work with the Tremec 5 and 6 Speed Transmissions. You can use one of the new bolt-in Classic Car Conversion Transmissions and still use all of the Stock 4 Speed Pedals and Rods with this bellhousing.