77-82 C-4 Flexplate

The 77-82 C-4 Flexplate from B and M Automotive is a critical drivetrain component engineered for Corvette enthusiasts and professional mechanics rebuilding or upgrading automatic transmission systems. This flexplate serves as the mechanical bridge between your engine crankshaft and torque converter, transmitting rotational force while accommodating minor misalignment and absorbing drivetrain shock. If you're restoring a classic C-4 Corvette or performing a transmission swap, a quality flexplate is non-negotiable for reliable power delivery and longevity.

B and M Automotive's 77-82 C-4 Flexplate is precision-engineered to OEM specifications, ensuring proper bolt-hole alignment and balance characteristics that protect against vibration and premature wear. Weighing 6.8 pounds with compact dimensions (14.2 x 1.4 x 14.4 inches), this flexplate integrates seamlessly into factory engine bays without fitment complications. The component is manufactured to handle the torque demands of stock and mildly modified Corvette engines, with balanced engineering that prevents harmonics from destabilizing your transmission assembly or damaging output shaft bearings over extended driving cycles.

Owners performing C-4 transmission rebuilds, engine replacements, or resto-mod work will benefit most from this OEM-specification flexplate, particularly those prioritizing reliability over radical horsepower increases. Installation requires engine removal or transmission drop for access to the crankshaft flange, making this a project-level upgrade best handled during major drivetrain service. Verify your specific model year (1977–1982 Corvette C-4) before ordering to ensure compatibility with your engine code and transmission variant; proper installation torque specifications should be followed to prevent fastener loosening and catastrophic drivetrain failure.