Home - Return to Previous Page
Click on image to zoom

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
Please Call for Availability


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.

Customer Reviews

Comment Total Reviews (0)

Write the First Review!

You must login to post a review.