Chromoly Flexplate - SFI SBF 157T 50oz.

The PRW Industries Chromoly Flexplate - SFI SBF 157T 50oz is a precision-engineered flexplate designed specifically for Small Block Ford engines. Built from chromoly steel and rated to SFI 29.1 safety standards, this 157-tooth flexplate delivers the strength and reliability required in high-performance engine builds. The 50-ounce external balance configuration ensures compatibility with matching Small Block Ford balancers and dampers, critical for maintaining proper engine harmony and minimizing vibration.

Chromoly construction provides superior durability compared to cast iron alternatives, offering enhanced fatigue resistance during repeated thermal cycling and high-RPM operation. The SFI 29.1 certification indicates this flexplate has passed rigorous testing for impact and safety, making it suitable for street cars, weekend warriors, and drag racing applications where engine reliability is non-negotiable. The 157-tooth count matches standard Small Block Ford ring gears, ensuring proper starter engagement and predictable flywheel operation.

This flexplate is the component of choice for restoration builds, performance upgrades, and engine rebuilds where the original flexplate has worn, cracked, or become unreliable. Whether rebuilding a 289, 302, 351W, or other small-block variant, the 50oz balance weight and chromoly durability make it suitable for both stock and modified powerplants. Proper flexplate selection ensures smooth idle quality, reliable cold starts, and long-term durability in automatic transmission applications.