Pro Series Flexplate SFI 29.1 63-82 SBF 157T

The Pro Series Flexplate SFI 29.1 63-82 SBF 157T is a high-performance flexplate engineered for Small Block Ford engines running external balance configurations. Built for enthusiasts and professional builders who demand reliability in high-horsepower applications, this flexplate replaces the factory component with a precision-engineered alternative that handles the stresses of modern performance modifications. Whether you're upgrading a street machine, restoration project, or competition engine, a quality flexplate is essential to safe power transmission between your engine and transmission.

Manufactured by PRW Industries Inc., this flexplate features SFI 29.1 certification, ensuring it meets the safety standards required for sanctioned racing and high-boost applications where component failure is not an option. The 157-tooth design is specifically matched to external balance Small Block Ford engines, meaning it works in conjunction with a balanced crankshaft and external counterweights rather than internal balance systems. The steel construction with a two-piece seal design provides durability under sustained load while the external balance specification eliminates compatibility guesswork—this flexplate is built only for engines prepared to that exact configuration. At 8.08 lbs, the weight distribution is optimized for dynamic balance in the 5,000–8,000 rpm range typical of street and strip performance driving.

This flexplate is ideal for 1963–1982 Small Block Ford applications with external balance requirements, including 289, 302, and 351W variants used in muscle cars, hot rods, and vintage race vehicles. Before ordering, verify that your engine is indeed externally balanced and confirm your torque converter or automatic transmission bolt pattern matches the 157-tooth specification. Installation requires engine removal or transmission drop-out access and should be performed by a mechanic familiar with flexplate installation practices to ensure proper torque specifications and concentricity. The PRW Industries reputation for precision manufacturing makes this a trusted choice for builders unwilling to compromise on drivetrain integrity.