Chevrolet 1-Piece Rear Main SBC ('86-'99) External Balance Dual Bolt Pattern.

TCI Chevy stamped flexplates are .035in thicker than stock, and the starter ring is welded to both sides of the flywheel for additional strength. Constructed from a high tensile strength material, these flywheels resist elongation and cracking. All 168-tooth flywheels have GM dual bolt patterns, are sized for stock 3/8in mounting bolts and can be easily drilled for 7/16in diameter high performance torque converter applications. These machined flexplates are perfect for stock to mild performance applications.