Holley Complete T56 Transmission Installation Kits
Installation Kits, Transmission, T-56, Magnum, Aluminum Bellhousing, 12 in. Disc, 26 Spline, Billet Flywheel, 6-bolt, SBC, LS, Gen III/IV, Kit
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Estimated Ship Date from Texas: Monday 10/19/2026 Would you rather pick it up?
Overview
Holley Complete T56 Transmission Installation Kits
Holley offers complete T56 transmission installation kits for a variety of engine applications. These kits come complete with everything you need to bolt a GM-style Tremec T-56 or Magnum transmission to almost any Gen III or Gen IV small block Chevrolet engines with a 6- or 8-bolt flywheel. Built with a mixture of Holley's best brands, including Lakewood and Hays, each kit includes a bellhousing, billet steel flywheel, clutch and pressure plate, hydraulic release bearing, roller pilot bearing, and all hardware needed to install these components.
* Kit 319-510 is set up to be used with the 6-bolt flywheel LS engines, which are the majority of the Gen III and Gen IV engines produced before 2009 (LS1, LS2, LS3, LS6, LS7, LM7, LQ9, L33, and similar truck engines).
* Kit 319-511 is set up to be used with the 8-bolt flywheel LS and Gen V LT engines that come after 2009 (LSA, LT1, LT4, L83, and similar truck engines).
Product features:
* Lightweight cast aluminum bellhousing and stamped steel dust cover provides factory-like installation and appearance
* Billet steel flywheel for light weight (28 lbs.) and additional strength
* Roller-style pilot bearing offers improved shifting by reducing parasitic drag and transmission wear
* 26-spline, 12 in. organic sprung clutch offers superior clamping force and smooth engagement for engines up to 550 naturally aspirated horsepower (500 with power adder)
* Adjustable hydraulic release bearing offers reduced pedal effort and easy installation
* Works with original equipment or MSD high torque starters
* All hardware included (flywheel, transmission, and engine connections)
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Some parts are not legal for use in California or other states with similar laws / regulations
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