TCI Automotive 399753 LS1 Engine to GM Auto Transmission Adapter

#282399753

TCI Automotive 399753 LS1 Engine to GM Auto Transmission Adapter

Name: TCI Automotive 399753 LS1 Engine to GM Auto Transmission Adapter
Brand: TCI Automotive
SKU: 282399753
Price: 375.95 USD
Availability: InStock
Rating: 5 (3 reviews)

3 Reviews

9 Questions

Has a 29.1 SFI safety rating certification
It is specific to a converter with a 10-1/2" and 11.063" bolt pattern
Spacer properly positions the flexplate and supports the converter hub

$375.95

each

In Stock

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Product Summary

Chevy LS V8, 4L60E, 700R4, TH350, TH400, Steel

Has a 29.1 SFI safety rating certification
It is specific to a converter with a 10-1/2" and 11.063" bolt pattern
Spacer properly positions the flexplate and supports the converter hub
Will allow you to bolt a TH350, TH400*, Powerglide, and 700R4 transmission up to your LS-Series engine
Flexplate is .035" thicker than stock and the starter ring is welded to both sides of the flexplate for additional strength

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Key Specs

MFG. Part #	333753
Brand	TCI Automotive
SFI Rating	29.1
Material Type	Steel

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Installation Details

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Fits internally balanced Chevy 4.8, 5.3, 5.7, 6.0 LS1/LS6-series V8 engines.
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.
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)
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.

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TCI Automotive 333753 Details

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

CA Prop 65

TCI Automotive 333753 Specifications

KEY SPECS
MFG. Part #	333753
Brand	TCI Automotive
SFI Rating	29.1
Material Type	Steel

GENERAL
Sold in Quantity	Each
GTIN Code	788120030274

Ratings & Reviews

3 Reviews

Customers say

Customers highly commend our product for its perfect fit and heavy-duty quality, emphasizing its enduring durability. The product has proven to be highly practical and adaptable, consistently praised for its successful integration in various applications, such as Ls engine and power glide replacements. The proven material quality and the perfect-fit feature of the product have been repeatedly recommended, setting our product apart from competitors. In particular, customers appreciate the product’s compatibility with a '71 Duster race car and an LS2, demonstrating its versatility. Despite a higher price point, customers believe the product's superior features and longevity justify the investment.