Holley 319-510 Complete Transmission Installation Kit 6-Bolt LS to T-56 / Magnum

The Holley 319-510 is a complete transmission installation kit that provides everything needed to mate a 6-bolt Gen III/Gen IV LS engine to a GM-style Tremec T-56 or T-56 Magnum transmission. Built using premium components from Holley's trusted family of brands — including Lakewood and Hays — this all-in-one kit eliminates the guesswork and parts-sourcing hassle of a manual transmission swap.

The 319-510 is specifically designed for the majority of Gen III and Gen IV LS engines produced before 2009 with a 6-bolt crank flange, including the LS1, LS2, LS3, LS6, LS7, LM7, LQ9, L33, and similar truck engines. Builders working with 8-bolt LS or Gen V LT engines (2009+) should reference the 319-511 instead.

Kit Includes:

• Lightweight cast aluminum bellhousing with stamped steel dust cover for a factory-like fit and finish
• 28 lb. billet steel flywheel engineered for reduced rotating mass and superior strength
• 26-spline, 12-inch organic sprung clutch disc and pressure plate rated for up to 550 hp naturally aspirated (500 hp with power adder)
• Adjustable hydraulic release bearing for reduced pedal effort and straightforward installation
• Roller-style pilot bearing to minimize parasitic drag and reduce transmission input shaft wear for improved shift quality
• All flywheel, transmission, and engine mounting hardware

Key Features:

• Compatible with OE (original equipment) and MSD High Torque starters — no starter swap required
• Adjustable hydraulic release bearing simplifies setup and reduces pedal effort compared to mechanical alternatives
• Roller pilot bearing reduces parasitic drag for smoother, more precise shifting
• Factory-style cast aluminum bellhousing provides a clean, OEM-quality appearance
• Emissions compliant — legal for use on emissions-controlled and non-emissions-controlled vehicles

The Holley 319-510 is the definitive bolt-in solution for connecting a pre-2009 6-bolt LS engine to the proven Tremec T-56 or T-56 Magnum 6-speed manual transmission platform.