TCI GM LS1 168-Tooth Internal Balance Flexplate Suit TH350 & TH400 transmissions
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 are sized for stock 3/8" mounting bolts and can be easily drilled for 7/16" diameter high performance torque converter applications and are SFI 29.1 approved.
Fits internally balanced Chevy 4.8, 5.3, 5.7, 6.0 LS1/LS6-series V8 engines.
 

TCI Ford Neutral Balance Flexplate 289-351C, 351M-400M, 11.5" Bolt Pattern
For Ford applications, TCI OEM-style small block flexplates are constructed to precise standards and are SFI 29.1 approved. Built extra-thick with welds on both sides of the ring gear, these flexplates are precision-balanced and checked for runout. 11.5" Bolt Pattern, 164-Tooth

TCI Ford External Balance Flexplate 289-351C, 351M-400M, 11.5" Bolt Pattern 28oz
For Ford applications, TCI OEM-style small block flexplates are constructed to precise standards and are SFI 29.1 approved. Built extra-thick with welds on both sides of the ring gear, these flexplates are precision-balanced and checked for runout. 11.5" Bolt Pattern, 164-Tooth