Clutch Housing - GM LS T56 Magnum

The TREMEC Clutch Housing for GM LS T56 Magnum transmission is a precision-engineered aluminum bellhousing designed to mate LS-series engines with the legendary T56 Magnum manual transmission. This natural aluminum housing provides the critical interface between your LS power plant and modern transmission technology, engineered to OEM tolerances for proper clutch geometry and hydraulic release bearing alignment. Built by TREMEC—the gold standard in manual transmission engineering—this clutch housing eliminates the guesswork when adapting LS engines into T56 platforms.

The aluminum construction weighs 10.5 lbs and features dimensions of 18.1 x 7.95 x 19.8 inches, making it compatible with standard LS swap mounting points and T56 bellhousing bolt patterns. Aluminum material balances weight reduction with structural rigidity—critical for maintaining concentricity when transmitting peak torque loads from high-output LS engines to the transmission input shaft. The natural finish requires no additional coating, though many builders apply their own protective treatment based on engine bay aesthetics. Precise bore and shoulder tolerances ensure proper pilot bearing and clutch disc clearance, preventing drag or disengagement issues that compromise shift quality.

This bellhousing is essential for LS engine swaps targeting modern manual transmissions. Whether building a restomod classic with a crate LS V8, upgrading a hot rod with contemporary powertrain technology, or completing a high-performance street or track build, the T56 Magnum paired with an LS engine demands a properly engineered interface. This housing eliminates adapter stacking and ensures OEM-level fitment and clutch bite characteristics. Serious builders and machine shops rely on TREMEC components for repeatability and reliability when shifting six-speed power across the entire RPM band.

The LS platform's popularity in retrofit applications has made bellhousing selection critical for success. Unlike cast-iron housings or adapter-based solutions, a dedicated aluminum bellhousing from TREMEC delivers proper alignment without compromise. Part number 1386-212-005 is the verified interface component trusted by transmission shops and custom builders nationwide. This is not a universal or marginal product—it's a purposeful engineering solution for a specific, high-demand platform combination.