Chevy 168 Tooth SFI Flywheel

The Chevy 168 Tooth SFI Flywheel (TCI 399773) is a purpose-built flex plate designed for small-block Chevrolet engines requiring external balance correction and SFI 29.1 safety certification. Whether you're building a high-revving street engine, preparing a performance bracket car, or restoring a classic Chevy with modern driveline components, this single-piece sealed flexplate delivers the precision balance and durability serious engine builders demand. The 168-tooth design matches late-model Chevy starter motors while maintaining compatibility with vintage and contemporary ignition timing rings.

Constructed from premium steel, this externally balanced flexplate accommodates the specific weight distribution requirements of small-block Chevy short-blocks, ensuring smooth power transfer from engine to transmission without vibration or harmonics issues. The one-piece sealed design prevents fluid leakage at the crankshaft interface—a critical feature in high-horsepower builds where crankcase pressure can compromise worn seals. SFI 29.1 certification guarantees this component meets stringent safety standards for competition use, including drag racing, road course events, and sanctioned motorsports applications where component failure could pose serious risk. The compact footprint (14.3 x 14.6 inches) and lightweight construction (7.21 lbs) minimize rotational mass while maintaining structural integrity under shock loads and aggressive launch conditions.

This flywheel is ideal for engine builders, restoration shops, and weekend warriors upgrading small-block Chevy engines in street rods, muscle cars, and performance vehicles. Installation requires proper crankshaft balancing to achieve the external balance specification—work best handled by experienced machine shops familiar with Chevy rotating assemblies. Verify your starter motor accepts a 168-tooth ring gear and confirm crankshaft balance requirements before ordering. Pair this flexplate with a compatible torque converter or clutch assembly matched to your transmission type and horsepower output for optimal driveline compatibility and longevity.