Overview These Holley Transmission Installation Kits come complete with everything you need to bolt a TKX or TKO transmission to a 1970-1990 454 big-block Chevrolet engine. Built with a mixture of our best brands including Lakewood, Hays and Mr. Gasket. Kit includes: A roller pilot bearing, bellhousing with dust shield, billet steel flywheel, clutch and pressure plate, hydraulic release bearing, and all hardware needed to install these components. Designed for externally balanced big block 454 Chevy engines with 2-pc rear main seal and a 2.485-inch crank register diameter Features Designed for 1970-1990 454 Big Block Chevrolet Engines using a TKX or TKO transmission Light weight cast aluminum bellhousing and stamped steel dust cover provides factory-like installation and appearance Billet steel 36 lb, 168 tooth externally balanced flywheel for light weight and strength Roller style pilot bearing offers improved shifting by reducing parasitic drag and transmission wear 26 spline, 11-inch clutch disk offers superior clamping force for engines up to 500 hp Adjustable Hydraulic Release Bearing offers reduced pedal effort and easy installation Organic clutch disc features heavy-duty hub spring assembly for increased load capacity Works with OE (original equipment) or MSD High Torque starters All hardware included TECHNICAL SPECS Engine Balance External Input Spline 26
