SBC Flexplate - SFI- 153 Tooth- Ext. Balance

The SBC Flexplate - SFI 153 Tooth Ext. Balance from SCAT ENTERPRISES is a critical component for any Small Block Chevy engine builder transitioning to automatic transmission setups. This flexplate serves as the mechanical bridge between your engine's crankshaft and torque converter, absorbing rotational forces while maintaining precise balance for smooth operation. Whether you're converting a manual-equipped SBC to an automatic, rebuilding an existing drivetrain, or assembling a high-performance engine, this SFI-certified flexplate ensures reliability and safety under demanding conditions.

Manufactured with a steel construction and engineered for external balance, this 153-tooth flexplate is designed to work seamlessly with externally balanced Small Block Chevy crankshafts—a critical consideration for engine builders who've invested in high-performance rotating assemblies. The 1-piece seal design minimizes oil leakage and simplifies installation, while the 9.5-inch bolt circle provides secure attachment to your transmission's torque converter. SFI 29.1 certification guarantees this component meets industry safety standards for race and street applications, providing the durability and precision expected in demanding automotive environments. At 6.15 pounds, this flexplate delivers the strength needed without excessive weight penalty.

This flexplate is ideal for SBC enthusiasts building automatic-equipped engines in street rods, restorations, muscle cars, and performance vehicles. Proper installation requires verification that your crank is externally balanced and matches the 153-tooth count of your transmission bell housing—mismatches will cause severe vibration and component failure. The flexplate's dimensions of 13.3 x 0.8 x 13.3 inches ensure compatibility with standard Small Block Chevy engine bays and automatic transmission housings. Whether you're a seasoned engine builder or a dedicated DIY mechanic, this SCAT flexplate provides the reliability and precision necessary for a smooth-running, properly balanced automatic drivetrain.