TCI Heavy Duty Flexplate - SB Chevy 400, External Balance - Dual Bolt Pattern - 168 Tooth Flywheel - SFI 29.1 Approved 3550224-17- S Please call the Flowmaster tech-line

Please call the Flowmaster tech-line for assistance with specific dB requirements and applications

GM B-Body 1977-90

USM modules and Racepak Pro modules

External Balance Rear

TCI Heavy Duty Flexplate - SB Chevy 400, External Balance - Dual Bolt Pattern - 168 Tooth Flywheel - SFI 29.1 Approved 3550224-17- S Please call the Flowmaster tech-lineChevrolet 400 Flexplate; External Balance; Dual GM Bolt Pattern.. This forged flexplate is for Chevrolet 400 engines. SFI 29. 1 approved and externally balanced. 168 Tooth Count. Dual GM Bolt Pattern. TCI also offers stock replacement, stamped, heavy duty flexplates for popular Chrysler, Ford and Chevy applications. TCI Chevy stamped flexplates are . 035" thicker than stock, and the starter ring is welded to both sides of the flywheel for additional