SKU: PQX1630581
UPC: 842864005278
MPN: 1630581
The PRW Industries Steel SFI Flywheel for Small Block Chevy with 153-tooth external balance configuration is a purpose-built rotating component for engine builders who demand precision in high-performance applications. This one-piece steel flywheel combines SFI 1.1 certification with external balance design, making it ideal for small block Chevrolet engines running dedicated performance setups where weight, durability, and regulatory compliance matter equally.
The 153-tooth ring gear configuration is standard for modern small block Chevy applications with external balance requirements. The steel construction provides the rigid platform necessary for consistent clutch engagement and reliable power transmission in racing, drag, and turbocharged builds. At 29.25 lbs, this flywheel integrates with externally balanced crankshafts and balancer assemblies. The 1-piece seal design eliminates the multi-piece geometry that can develop leaks over time, reducing maintenance headaches in high-heat environments. SFI 1.1 certification ensures this component meets sanctioning body standards for drag racing and road course competition, a critical requirement for vehicles competing in organized events.
This flywheel targets engine builders, hot rod fabricators, and performance shops assembling or refreshing small block Chevy powerplants. Whether replacing a worn stock unit or upgrading to match a fresh stroker or forced-induction build, the 153-tooth external balance design ensures proper starter engagement and crankshaft harmony. Buyers upgrading from older internal-balance flywheels need to verify their crankshaft configuration before installation; this part is engineered specifically for external balance small block platforms.
In the small block Chevy market, steel flywheels remain the durability standard for high-output applications, offering superior thermal stability compared to cast iron alternatives. The 153-tooth count is prevalent across modern small block packages, ensuring straightforward sourcing of compatible clutch assemblies and starters from major manufacturers.
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