TCI 399573 - SBC (Pre-'86) & BBC Flexplate; Internal Balance; Small Bolt Pattern; 153 Tooth.

GM 153-Tooth Internal Balance Flexplate Flexplates are .035" thicker than stock and the starter ring is welded to both sides of the flexplate for additional strength. Constructed from a high tensile strength material, these flexplates resist elongation and cracking. All 168-tooth flexplates have dual GM bolt patterns and are sized for stock 3/8" mounting bolts. They can be easily drilled for 7/16" diameter high performance torque converter applications and are SFI 29.1 approved. Fits all internally balanced Chevy V8 engines, SFI approved.