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TCI Automotive 399753 LS1 Engine to GM Auto Transmission Adapter
TCI Automotive 399753 LS1 Engine to GM Auto Transmission Adapter

TCI Automotive 399753 LS1 Engine to GM Auto Transmission Adapter

Chevy LS V8, 4L60E, 700R4, TH350, TH400, 29.1 SFI Rating, Steel

1 Review | 9 Answered Questions
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TCI Automotive 399753 LS1 Engine to GM Auto Transmission Adapter
TCI Automotive 399753 LS1 Engine to GM Auto Transmission Adapter
TCI Automotive 399753 LS1 Engine to GM Auto Transmission Adapter
TCI Automotive 399753 LS1 Engine to GM Auto Transmission Adapter
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TCI Automotive 399753 LS1 Engine to GM Auto Transmission Adapter
TCI Automotive 399753 LS1 Engine to GM Auto Transmission Adapter
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Part # 282399753
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Details

MFG. Part #:
333753
SFI Rating:
29.1
Material Type:
Steel
Sold in Quantity:
Each
GTIN Code:
788120030274

Info

If you want to bolt a TH350, TH400*, Powerglide, and 700R4 transmission up to your LS-Series engine, you need this kit. The spacer properly positions the flexplate and supports the converter hub. For Turbo 350, Turbo 400*, and 700R4 transmission application.

SFI 29.1 approved. Dual bolt patterns: stock LS-Series and small GM bolt pattern.

Kit includes:

  • dual bolt pattern SFI rated flexplate
  • flexplate spacer
  • flexplate to crankshaft bolts
  • instructions

 

Notes

  1. Fits internally balanced Chevy 4.8, 5.3, 5.7, 6.0 LS1/LS6-series V8 engines.
  2. 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.
  3. This adapts a TH350, TH400, 700R4, Powerglide & early 4L60E to an LS-Series engine with a short crankshaft (Most, excluding 1999-01 truck engines and LQ4/6.0 which have a 'long' crank/flat flexplate/4L80E application)
  4. Flexplate is specific to a converter with a 10-1/2" bolt pattern (TH350) and 11.063" (stock LS trans converters) and will not bolt to 'large' converter with the 11-1/2" pattern (common to the TH400.

Important Messages:

  • Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.
Some parts are not legal for use in California or other states with similar laws/regulations

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Videos & Articles
  • There are a few things to consider before you select a replacement flexplate for your small-block Chevy engine. Speedway has some useful tips to follow that will help speed up the process.
  • One of the most challenging things about swapping transmissions can be figuring out the clutch linkage. Speedway can show you how to install the upgraded hydraulic throwout bearing with ease.

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