Chromoly Flexplate - SFI SBC 153T - Int. Balance

The PRW Industries Chromoly Flexplate – SFI SBC 153T with internal balance is a high-performance flexplate engineered for small block Chevy engines requiring SFI 29.1 certification. This 153-tooth chromoly flexplate is designed to handle the torque demands of modern performance builds while maintaining the precision balance required for smooth operation and extended drivetrain longevity.

The internal balance specification means this flexplate is matched to internally balanced crankshafts, eliminating the need for external balancing hardware and simplifying installation. The 153-tooth count is the standard specification for small block Chevy and V6 engines with automatic transmissions. Chromoly construction provides superior fatigue resistance compared to cast iron alternatives, critical for engines producing elevated horsepower or running repeated full-throttle cycles. The two-piece seal design accommodates modern transmission sealing requirements while reducing potential leak points. SFI 29.1 certification ensures this component meets safety standards for drag racing and high-performance applications where flexplate failure poses significant risk.

This flexplate is the correct choice for builders upgrading stock small block Chevy or V6 powerplants with performance modifications, or those replacing a worn original flexplate with a stronger, certified alternative. It's particularly valuable for engine rebuilds, transmission swaps, and any build where the original flexplate cannot support increased output. Proper balance matching between flexplate, crankshaft, and transmission is essential; verify internal balance specifications before purchase to ensure compatibility with your specific rotating assembly.

PRW Industries manufactures flexplates across a wide range of engine platforms and specifications. The Gold Series designation reflects PRW's premium tier of components, engineered for reliability under sustained performance demands. Choosing a certified, chromoly flexplate over cast-iron alternatives is an investment in drivetrain durability and safety—particularly important when other powertrain components are upgraded.