LW Flexplate SBC

The LW Flexplate SBC from QUARTER MASTER is a purpose-built lightweight flexplate engineered for small-block Chevrolet engine swaps and high-performance build applications. This component serves as the critical interface between your engine's crankshaft and torque converter in automatic transmission setups, making it essential for anyone upgrading their drivetrain or reducing rotating mass. Built for both street and competition builds, the lightweight flexplate minimizes inertia and parasitic drag, improving throttle response and overall engine efficiency.

Weighing just 3.12 pounds, this flexplate delivers significant mass reduction compared to cast-iron OEM units—a critical upgrade for engine builders prioritizing driveline efficiency and rotational speed. QUARTER MASTER's engineering ensures proper balance, concentricity, and flex characteristics to handle demanding torque loads while preventing premature cracking or warping. The compact footprint (13.1 x 14.8 inches) maintains compatibility with standard small-block Chevrolet bellhousing dimensions, while the 1.4-inch thickness profile integrates seamlessly into existing transmission tunnel designs without modification.

This flexplate is ideal for street machines, restomod projects, and bracket racing applications where weight savings directly correlate to improved acceleration and fuel economy. Mechanics and engine builders commonly spec this component when upgrading to modern automatic transmissions on vintage platforms or when optimizing newer small-block combinations for maximum performance. Installation requires proper torque specifications and alignment with your specific transmission and engine combination; consult your transmission manufacturer's guidelines for bolt-down procedures and any balancing requirements specific to your setup.