AUTOMATIC TRANSMISSION INSTALLATION KITS

19125817

Bell Housing Kit – LT Engine

  • Unique bell housing kit enables 1996 and later 4L60, 4L65, 4L70 and 4L75 four-speed automatic transmissions to be matched with the Gen V LT1 engine
  • Use with 8-bolt flexplate kit P/N 19329416

24283284

8L90-E Installation Kit for LT1 & LT4 (slip yoke only)


24284144

8L90-E Installation Kit for LT4 (fixed yoke only)

   


19259117

Transmission Installation Kit – 4L60/4L70 Series

  • Use with 4L60, 4L65, 4L70 and 4L75-E transmissions on LS engines with 6-bolt crankshaft flange
  • Includes flexplate, flexplate covers, fasteners and instruction sheet
  • Does not fit LSA, LSX454, LS9, LT1 or LT4 engines.

   


19329416

16 Transmission Installation Kit – 4L60/4L70 Series

  • Use with 4L60, 4L65, 4L70 and 4L75-E transmissions on LS engines with 8-bolt crankshaft flange
  • Includes flexplate, flexplate covers, fasteners and instruction sheet
  • Fits LSA, LSX454, LT1 and LT4

   


19332781

Transmission Installation Kit – 4L60/4L70 Series

  • Use with 4L60, 4L65, 4L70 and 4L75-E transmissions on Small-Block and Big-Block crate engines with 6-bolt crankshaft flange
  • Designed to be used with SuperMatic converters
  • Does not include flexplate

   


19259119

Transmission Installation Kit – 4L80 Series 

  • Use with all LS engines to mate transmission fully with the engine
  • Includes flywheel cover, hardware and fastener torque specs
  • Does not include flexplate
  • Use flexplate 12654640 for 6-bolt crankshaft engines and SuperMatic converters
  • Use flexplate 12636325 for 8-bolt crankshaft engines and SuperMatic converters
  • All production converters must use crankshaft adapters (see kits below)  

   


19332784

Transmission Installation Kit – 4L80 Series

  • Use with all Big-Block crate engines to mate transmission fully with the engine
  • Includes flywheel cover, hardware and fastener torque specs
  • Designed to be used with SuperMatic converters
  • Does not include flexplate

19125597

8-Bolt Crankshaft Adapter Kit – LSA/LSX454

  • Use with LSA, LSX454 and LSX454R crate engines with 8-bolt crankshaft flange
  • Includes flexplate, adapter hub and hardware
  • Provides the correct converter pilot support for production 4L80/85-style torque converters
  • Conventional 6-bolt flexplates do not bolt up to LSA and LSX454 engines  

For 6-Bolt Crankshaft Adapter, order the following parts:

12563532 Crankshaft Spacer (1)
19260102 Flexplate (1)
19257940 Mounting Bolts (6)

19154766

Transmission Adapter Kit

  • Allows installation of Gen III/IV-style 4L60-E/4L65-E transmission onto Gen I and II engines using production-style torque converter
  • Includes spacer ring, shims, dowels, bolts and flexplate
  • Works on one-piece rear main seal engines only (e.g., Ram Jet 350)

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Unless specifically noted to the contrary herein, vehicles equipped with Chevrolet Performance parts that are emissions-related may not meet U.S., Canadian, and state and provincial laws and regulations relating to motor-vehicle emissions. These parts are designed and intended for use in vehicles operated exclusively for competition: in racing or organized competition on courses separate from public streets or highways. Visit www.chevroletperformance.com/emissions for more details.