Rank Product Name Score
1 GM Gen III LS V8 Flexplate Adapter Kit to TH350/TH400/700R4 Transmission GM Gen III LS V8 Flexplate Adapter Kit to TH350/TH400/700R4 Transmission
Speedway Motors
9.5 GET ON AMAZON
2 Short Crank LS Transmission Adapter Flexplate Spacer Short Crank LS Transmission Adapter Flexplate Spacer
Speedway Motors
9.2 GET ON AMAZON
3 BDFHYK Flexplate Adapter Spacer LS Swap Torque Stall Converter Hub Crankshaft Adapter Compatible with TH350 TH400 Transmission BDFHYK Flexplate Adapter Spacer LS Swap Torque Stall Converter Hub Crankshaft Adapter Compatible with TH350 TH400 Transmission
BDFHYK
9.1 GET ON AMAZON
4 ICT Billet LS Swap Torque Stall Converter Hub Adapter Transmission Crank LS1 / LT1 TH400 TH350 Flywheel LM7 LR4 LQ4 LS6 L59 LQ9 LM4 L33 LS2 LH6 L92 L76 551165 ICT Billet LS Swap Torque Stall Converter Hub Adapter Transmission Crank LS1 / LT1 TH400 TH350 Flywheel LM7 LR4 LQ4 LS6 L59 LQ9 LM4 L33 LS2 LH6 L92 L76 551165
ICT Billet
8.8 GET ON AMAZON
5 LS/LT Crankshaft Hub Adapter for Torque Converter, Flexplate Spacer Sleeve, Stainless Steel Material, Compatible with LS & LT Series Engines Gen III, IV, V, Adapts TH350, TH400, 700R4 LS/LT Crankshaft Hub Adapter for Torque Converter, Flexplate Spacer Sleeve, Stainless Steel Material, Compatible with LS & LT Series Engines Gen III, IV, V, Adapts TH350, TH400, 700R4
Gangmu Tec Co. Ltd.
8.5 GET ON AMAZON
6 TASAN RACING LS1 Flexplate Adapter Spacer for TH350 TH400 Conversion Swap LS2 LS3 LQ4 LT1 LS7 5.7 6.0 5.3 TASAN RACING LS1 Flexplate Adapter Spacer for TH350 TH400 Conversion Swap LS2 LS3 LQ4 LT1 LS7 5.7 6.0 5.3
Tasan Racing
8.3 GET ON AMAZON
7 Dewhel LS1 Flexplate Adapter Spacer For GM TH350 TH400 Conversion Flywheel LS2 LS3 LQ4 LT1 LS7 5.7 6.0 5.3 Camaro Firebird Dewhel LS1 Flexplate Adapter Spacer For GM TH350 TH400 Conversion Flywheel LS2 LS3 LQ4 LT1 LS7 5.7 6.0 5.3 Camaro Firebird
Dewhel
8.2 GET ON AMAZON
8 LS1/LS2/LS6/5.3L/6.0L Flexplate to TH350/700R4/4L60 Transmission LS1/LS2/LS6/5.3L/6.0L Flexplate to TH350/700R4/4L60 Transmission
Speedway Motors
8.2 GET ON AMAZON
9 Michigan Motorsports LS1 Flexplate Adapter Spacer - Fits GM TH350 TH400 Conversion Flywheel LS2 LS3 LQ4 LT1 LS7 5.7 6.0 5.3 Camaro Firebird Michigan Motorsports LS1 Flexplate Adapter Spacer – Fits GM TH350 TH400 Conversion Flywheel LS2 LS3 LQ4 LT1 LS7 5.7 6.0 5.3 Camaro Firebird
Michigan Motorsports
8.0 GET ON AMAZON
10 ICT Billet 6pc Extended Length LS Flexplate Flywheel Adapter Bolts Set Kit LS1 LS3 LS2 Heavy duty, High Strength, Zinc coated, Grade 10.9 Steel 551951X6 ICT Billet 6pc Extended Length LS Flexplate Flywheel Adapter Bolts Set Kit LS1 LS3 LS2 Heavy duty, High Strength, Zinc coated, Grade 10.9 Steel 551951X6
ICT Billet
7.7 GET ON AMAZON

GM Gen III LS V8 Flexplate Adapter Kit to TH350/TH400/700R4 Transmission

GM Gen III LS V8 Flexplate Adapter Kit to TH350/TH400/700R4 Transmission

    Features:

  • This kit includes the parts required to bolt a GM TH350, 700R4, 200-4R, or Powerglide transmission behind a Gen III LS engine
  • Includes flex plate, torque converter adapter sleeve, flex plate bolts, and torque converter bolts
  • Works with 10.75″ and 11.066″ (11.1″) torque converter bolt patterns
  • Works with factory LS starter to reduce conversion costs
  • Flexplate is .035″ thicker than stock which meets SFI 29.1 certification

Short Crank LS Transmission Adapter Flexplate Spacer

Short Crank LS Transmission Adapter Flexplate Spacer

    Features:

  • automotive-automatic-transmission-flexplates

BDFHYK Flexplate Adapter Spacer LS Swap Torque Stall Converter Hub Crankshaft Adapter Compatible with TH350 TH400 Transmission

BDFHYK Flexplate Adapter Spacer LS Swap Torque Stall Converter Hub Crankshaft Adapter Compatible with TH350 TH400 Transmission

    Features:

  • Compatible with GM LS series Xtreme Duty Flexplate with a 4mm thick centerplate, to GM automatic transmission For 1998-2004 LS based engines using a TH350 or TH400 transmission.
  • Crankshaft adapter has good ductility, conduction and thermal conductivity, and has strong ferromagnetic. Stable characteristics, high reliability. Perfect match for the original car.
  • Crankshaft adapter sleeves allow you to bolt a GM automatic transmission to a engine or an older GM automatic transmission to an LS-series engine. These adapter sleeves insert into the crankshaft flange with no modifications, giving you the correct distance and pilot size.
  • Use of this ls flexplate adapter keeps from possibly damaging the input shaft of your transmission when doing a transmission swap. pilot bushing bore changes and flexplate / flywheel configurations play importantly into interchange.
  • BDFHYK value your shopping experience, If you encounter any problems about LS flexplate adapter, you can feel free to contact us. We provide 24-hour mail service and will help you as soon as possible.

ICT Billet LS Swap Torque Stall Converter Hub Adapter Transmission Crank LS1 / LT1 TH400 TH350 Flywheel LM7 LR4 LQ4 LS6 L59 LQ9 LM4 L33 LS2 LH6 L92 L76 551165

ICT Billet LS Swap Torque Stall Converter Hub Adapter Transmission Crank LS1 / LT1 TH400 TH350 Flywheel LM7 LR4 LQ4 LS6 L59 LQ9 LM4 L33 LS2 LH6 L92 L76 551165

    Features:

  • Adapts Powerglide, 4L80E, TH400, TH350, 700R4, 4L60, 4L60E (from non LS engine) torque converter snout to LS/LT engine
  • See our LS/LT Crankshaft and Flexplate guide to determine where to place your crankshaft hub adapter
  • Made in Wichita, Kansas from USA produced steel
  • Compatible with all LS and LT series engines Gen 3, 4, 5 (except 99-00′ 6.0L does not require this)
  • Includes: 1 adapter ring (inserts into rear of crankshaft)

LS/LT Crankshaft Hub Adapter for Torque Converter, Flexplate Spacer Sleeve, Stainless Steel Material, Compatible with LS & LT Series Engines Gen III, IV, V, Adapts TH350, TH400, 700R4

LS/LT Crankshaft Hub Adapter for Torque Converter, Flexplate Spacer Sleeve, Stainless Steel Material, Compatible with LS & LT Series Engines Gen III, IV, V, Adapts TH350, TH400, 700R4

    Features:

  • (Specifics) While installing a Th350 or Th400 behind a LS engine while using a curved flywheel, this adapter spacer will come in handy.
  • (Compatibility) Compatible with GM Gen III/IV LS and Gen V LT series engines (except 1999-2000 6.0L does not require this.)
  • (Application) Adapts Powerglide, TH400, 4L80E, TH350, 2004R, 700R4, 4L60, 4L60E (from Non LS engine) torque converter snout to LS/LT
  • (Installation) Simply inserts into rear of crankshaft. If using a curved flexplate you’ll need this adapter spacer.
  • (Dimension) Height: 1.02″, Outer Diameter: 1.97″, Inner Diameter 1.69″

TASAN RACING LS1 Flexplate Adapter Spacer for TH350 TH400 Conversion Swap LS2 LS3 LQ4 LT1 LS7 5.7 6.0 5.3

TASAN RACING LS1 Flexplate Adapter Spacer for TH350 TH400 Conversion Swap LS2 LS3 LQ4 LT1 LS7 5.7 6.0 5.3

    Features:

  • LS1 Flexplate Adapter Spacer For GM TH350 TH400 Conversion Swap LS2 LS3 LS6 5.3 6.0 LS7
  • When Installing a TH350 or TH400 behind a LS Engine while Using a Curved Flywheel You’ll Need this Adapter Spacer
  • The Spacer Will Center the Nose of the Converter to the Curved Flexplate
  • Package Include: 1 x Flexplate Adapter Spacer
  • For Use on 1998-04 LS1 Based Engines Using a TH350 or TH400 Transmission

Dewhel LS1 Flexplate Adapter Spacer For GM TH350 TH400 Conversion Flywheel LS2 LS3 LQ4 LT1 LS7 5.7 6.0 5.3 Camaro Firebird

Dewhel LS1 Flexplate Adapter Spacer For GM TH350 TH400 Conversion Flywheel LS2 LS3 LQ4 LT1 LS7 5.7 6.0 5.3 Camaro Firebird

    Features:

  • LS1 Flexplate Adapter Spacer for GM TH350 TH400 Conversion Swap LS2 LS3 LS6 5.3 6.0 LS7.
  • When installing a Th350 or Th400 behind a LS engine while using a curved flywheel you’ll need this adapter spacer.
  • The spacer will center the nose of the converter to the curved flexplate.
  • In package – 1 x Flexplate Adapter Spacer
  • For use on 1998-04 LS1 based engines using a TH350 or TH400 transmission.

LS1/LS2/LS6/5.3L/6.0L Flexplate to TH350/700R4/4L60 Transmission

LS1/LS2/LS6/5.3L/6.0L Flexplate to TH350/700R4/4L60 Transmission

    Features:

  • This flexplate allows the use of GM TH350, 700R4, 200-4R, 4L60, and Powerglide transmissions with Gen III LS engines
  • Works with 10.75″ and 11.066″ (11.1″) torque converter bolt patterns
  • Works with factory LS starter to reduce conversion costs
  • Features double welded ring gears for added durability
  • .035″ thicker than stock which meets SFI 29.1 certification

Michigan Motorsports LS1 Flexplate Adapter Spacer – Fits GM TH350 TH400 Conversion Flywheel LS2 LS3 LQ4 LT1 LS7 5.7 6.0 5.3 Camaro Firebird

Michigan Motorsports LS1 Flexplate Adapter Spacer - Fits GM TH350 TH400 Conversion Flywheel LS2 LS3 LQ4 LT1 LS7 5.7 6.0 5.3 Camaro Firebird

    Features:

  • LS based engines using a TH350, TH400, Powerglide transmission.
  • If using a curved flexplate you’ll need this adapter spacer.
  • Quality Michigan Motorsports Product
  • Used on various LS Swaps and Conversions

ICT Billet 6pc Extended Length LS Flexplate Flywheel Adapter Bolts Set Kit LS1 LS3 LS2 Heavy duty, High Strength, Zinc coated, Grade 10.9 Steel 551951X6

ICT Billet 6pc Extended Length LS Flexplate Flywheel Adapter Bolts Set Kit LS1 LS3 LS2 Heavy duty, High Strength, Zinc coated, Grade 10.9 Steel 551951X6

    Features:

  • Extended Length Bolts for use with Crankshaft Adapter Plates
  • M11-1.5 thread
  • Package Includes 6 bolts
  • OEM grade 10.9
  • 6 Point Head Design

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