TCI Flexplate LS1/LS2/LS6/LS7 to 4L80-E Transmission

Manufacturer: TCI Automotive
Manufacturer part number: 399754
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$375.95
GM Chevy LS Series Engine 6-bolt Crankshaft SFI Flexplate with 11.5" Converter Pattern & Converter Pilot Extension. Fits TH400 and 4L80E transmissions and converters behind LS engines
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Chevrolet SFI 29.1 Approved Flexplates

  • .067" thicker than stock
  • Made from A36 steel plate

This flexplate is designed for use when bolting a GM LS-based motor to a 4L80E and utilizes the 6-bolt mounting pattern. This flexplate is dual-drilled with the 11.50 in. and the 11.063 in. bolt pattern. This will not fit 1999-2000 6.0L applications with 0.400 in. extended crank flange and came with flat flexplate. This will not fit 1999-2000 4.8L applications that originally came with a manual transmission.

Durable Performance Flexplates

TCI Heavy-Duty Flexplates are .0350 in. thicker than stock plates in order to withstand the stress of high-RPM engines and high-stall torque converters. Chevy 168-tooth plates have dual bolt patterns to accommodate both Powerglide and Turbo-Hydramatic (TH) torque converters. TCI also offers externally-balanced Small Block Ford to GM Transmission Adapter Flexplates that feature a built-in pilot adapter and a dual bolt pattern for a simple bolt-on installation.

Note: For use with a racing converter or GM Powerglide adapter.

Specifications:

  • Flexplate Material:  Steel
  • Safety Rating:  SFI 29.1
  • Ring Gear Tooth Quantity:  168-tooth
  • Rear Main Seal Style:  1-piece
  • Engine Balance:  Internal
 
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