Product Summary

Chevy LS V8, Many Automatic Transmissions

  • Compatible with GM LS series Xtreme Duty Flexplate with a 4mm thick centerplate
  • Premium steel construction, black painted finish
  • For TH350 or TH400 transmission application
  • Small end outside diameter 1.70", big end outside diameter 2.00"
  • Height 1.04", inside diameter 1.47" thru, 1.708-1.706 inside big dia. , .490 deep

Key Specs

MFG. Part #57518346
BrandSpeedway Motors

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Speedway Motors 57518346 Details

This adapter sleeve will connect a GM LS engine crankshaft to an older GM 2/3/4 speed automatic transmission torque converter. It centers the torque converter hub into the LS cranksaft. Use with flexplate adapter 57534610.

For 1997-07 GM LS1/LS6 engines (up to '09 for LS2) and 4.8/5.3/6.0 truck engines including L33, L59, LM4, LM7, LQ4, LQ9, and LR4. Adapts all of these engines to TH350, TH400, 700R-4, 200-4R, early 4L60 and Powerglide transmissions that originally came behind a non-LS engine (such as a SBC or BBC V8).

Speedway Motors 57518346 Specifications

MFG. Part #57518346
BrandSpeedway Motors
Sold in QuantityEach
Speedway Motors Catalog Part #575-18346