Brand New Southwest Speed Bellhousing, Chevy LS with GM 3 and 4 speed manual transmissions (Part #650-4004). Upgraded steel version of the GM 621 bellhousing which will provide additional safety and strength to resist cracking that is common with aluminum bellhousings. Accepts GM 3 and 4 speed manual transmissions such as Muncie T-10 as well as several aftermarket 5-speed transmissions by Tremec and Richmond. Excellent choice for Muscle Car LS swaps to keep floor and tunnel modification to a minimum due to the smaller transmission size compared to a T-56. Features: Laser-Cut, CNC-finished flanges for a perfect fit to engine and transmission .318-inch laser cut steel bellhousing flange with Chevy LS engine bolt pattern .400-inch thick laser cut transmission flange with Muncie/Saginaw 4-speed Bolt Pattern 7-gauge steel die-formed bellhousing fixture welded to flanges Includes .115-inch thick engine cover plate that bolts to bellhousing Also works for aftermarket Richmond and Tremec 5-speed manuals like TKX and TKO No provision for clutch fork or pivot stud, hydraulic release bearing only Includes a 1.5-inch hole for hydraulic release bearing lines to exit top of bellhousing Must be used with a 168 tooth LS flywheel and max 11 inch clutch diameter Includes block/cover plate and installation hardware Specs: Depth: 6" Material Type: Steel Transmission Type: Manual Overall Height: 6.125" Weight: 24 lbs. Clutch Diameter: 11" or smaller Engine Plate: .115" Thick Steel Flywheel: 168 tooth Transmission Bore Diameter: 4.686"
