Flywheel SBF SFI Billet Steel 64-95 Internal Bal

The PRW Industries Flywheel SBF SFI Billet Steel 64-95 Internal Balanced unit is a precision-engineered crankshaft component purpose-built for Small Block Ford engines requiring internal balance correction. This 157-tooth, 24-pound steel flywheel delivers the rotational stability essential for consistent engine performance across street, strip, and competition applications where damping mass and balance precision directly influence drivability and longevity.

Internal balance flywheels are engineered to work with internally balanced crankshafts—a critical compatibility requirement that ensures harmonic alignment and eliminates vibration-induced wear on bearings and seals. The billet steel construction provides superior dimensional stability and fatigue resistance compared to cast alternatives, particularly important in high-RPM Small Block Ford builds where thermal cycling and rotational stress demand material integrity. The 157-tooth ring gear profile ensures reliable starter engagement across cold-start and high-temperature conditions, while the SFI certification confirms compliance with performance automotive standards for safety and durability.

This flywheel is intended for Small Block Ford engine platforms spanning 1964 through 1995 model years that operate with internally balanced rotating assemblies. Builders restoring original SBF architecture, upgrading vintage drag cars, or tuning street engines benefit from PRW Industries' precision manufacturing—particularly when OEM internal balance specs have been compromised or when engine building requires component-level accuracy. Proper installation requires verification of crankshaft balance type and ring gear engagement before final assembly.