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TCI GM/LS1 168-TOOTH Internal Balance Flexplate, For Early Transmission, Each

TH400, TH350, 700R4 to LS1
SFI 29.1 approved
dual bolt patterns
.035" thicker than stock
Internal Balance
Pricing: $289.95


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.

For use with racing converter or GM Powerglide adapter, For 4L80E applications, use P/N 399754.
This adapts a TH350, TH400, 700R4, Powerglide & early 4L60E to an LS-Series engine
Will not fit 4L80-E
Will not fit 1999-2000 6.0L with long snout crank

A TH350, TH400 will require the smaller 10-1/2" bolt circle converter
The spacer properly positions the flexplate and supports the converter hub
For Turbo 350, Turbo 400*, and 700R4 transmission application.


  • TCI-399753
  • TCI-399753
  • New

Shipping Information

  • Item Requires Shipping
  • 7.1 lbs.

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