Flexplate CM SFI Olds V8 1957-90 166T

The PRW Industries Flexplate CM SFI Olds V8 1957-90 166T is a high-performance flexplate engineered for Oldsmobile V8 engine swaps and restorations spanning four decades of production. Built to SFI 29.1 safety certification standards, this 166-tooth chromoly flexplate delivers the strength and precision required for externally balanced engine combinations. The cadmium finish provides corrosion resistance essential for long-term reliability in both street and high-performance applications.

This flexplate measures 14.35 inches in diameter and weighs 7.04 lbs, making it compatible with externally balanced Oldsmobile V8 engines from 1957 through 1990. The 166-tooth design ensures proper engagement with torque converter or flywheel applications, while the SFI 29.1 certification confirms it meets critical safety specifications for high-horsepower environments. The chromoly construction provides superior durability compared to cast iron, reducing the risk of failure under sustained boost, nitrous, or competition loads.

Buyers restoring or modifying Oldsmobile V8 engines—whether in original muscle cars, hot rods, or modern swaps—depend on this flexplate to maintain proper powertrain balance and transmission engagement. The external balance design is critical; using a non-balanced flexplate on an externally balanced engine combination will cause severe vibration and potential engine damage. Professionals and serious enthusiasts select this PRW Industries part for its engineering quality and compliance with sanctioning body requirements for drag racing and performance events.

The Flexplate CM SFI Olds V8 1957-90 166T represents a verified solution for engine builders and restorers who cannot compromise on powertrain integrity. SFI certification is non-negotiable for competition use, and the 40-year production span covered by this flexplate makes it the go-to choice for Olds V8 projects across multiple generations.