Flywheel

The HAYS 11-330 Flywheel is a 130-tooth, 30-pound internal balance flywheel engineered for Mopar V8 engines equipped with a 6-bolt crankshaft. Built to SFI 1.1 standards and constructed from steel, this component is purpose-built for high-performance applications where reliable crankshaft engagement, inertial consistency, and durability under sustained load are non-negotiable. Whether for street performance, racing, or engine rebuild, the 11-330 delivers the precision fit and verified specifications that serious engine builders and enthusiasts demand.

The 130-tooth count and internal balance design are critical for Mopar V8 powerplants. Internal balance flywheels distribute rotating mass more evenly than external balance configurations, reducing vibration and improving driveline stability across the RPM band. The 30-pound mass provides optimal inertial properties for engine acceleration and throttle response without introducing excessive parasitic drag—a balance that performance builders spend considerable effort tuning. SFI 1.1 certification ensures the flywheel meets Society of Automotive Engineers standards for high-performance street and strip use, providing documented safety margins for extreme duty cycles.

This flywheel is intended for Mopar V8 engine builders, classic muscle car restorers, and performance enthusiasts executing complete engine rebuilds or high-output stroker builds. The 6-bolt crank interface and internal balance specification narrow fitment to specific Mopar platforms; verify your engine's balance type and crankshaft bolt pattern before purchase. At 29.05 pounds, handling and installation require proper mechanical support and fastener torque procedures per engine manufacturer specifications.

HAYS flywheels are recognized in the performance automotive market for manufacturing precision to OEM and racing standards. The 11-330's SFI rating and steel construction reflect a product positioned for users who require verified performance characteristics rather than budget commodity alternatives. This is not a universal aftermarket part; it is a specification-matched component for dedicated Mopar V8 builds.