Chromoly Flexplate - SFI SBF 157T 28oz.

The Chromoly Flexplate - SFI SBF 157T 28oz by PRW Industries is a high-strength rotating component engineered for small-block Ford engines requiring external balance correction. A flexplate serves as the critical link between your engine's crankshaft and the torque converter in automatic transmissions, absorbing vibration and shock loads while transmitting power smoothly. This chromoly steel construction is essential for high-performance builds, turbo applications, and street-strip vehicles where factory cast-iron flexplates fail under sustained load.

Built from chromoly steel rather than cast iron, this flexplate delivers superior fatigue resistance and durability in demanding conditions. The 157-tooth ring gear is precision-machined to ensure accurate starter engagement and smooth meshing across all RPM ranges. At 28 ounces, the external balance weight specification matches small-block Ford engine balance standards, eliminating vibration that would otherwise transmit through the drivetrain. SFI 29.1 certification guarantees this component meets safety standards for competition use and ensures proper containment in case of catastrophic failure, making it the choice of serious enthusiasts who refuse compromise.

This flexplate is ideal for small-block Ford owners upgrading from stock cast units to support forced-induction systems, high-revving naturally aspirated engines, or increased torque levels from internal modifications. Installation requires removing the bell housing and unbolting the original flexplate—a straightforward procedure for any mechanic with basic transmission knowledge. Verify external balance weight compatibility with your crank and torque converter before ordering; this 28oz unit matches the OEM specification for most small-block Ford applications but must align with your existing rotating assembly weight. Whether you're building a street cruiser or competition platform, the chromoly construction and SFI certification provide peace of mind under boost or at the limit.