SuperMatic™ 8L90-E Eight-Speed Automatic Transmission for LT1


  • Four gearsets for greater efficiency
  • Five clutches – two brake clutches and three rotating clutches
  • World-class upshift speeds
  • Friction-reducing features include synthetic fluid use
Due to world events we are working with our manufacturers every day to ship and receive parts. If the part you are looking for is time sensitive please give our team a call at 855-806-1147 before ordering to ensure it's availability.

Shipping is free, but there is a delivery fee for residential addresses.

SuperMatic™ 8L90-E 8-Speed Automatic Transmission

P/N 19371500

  • Gear ratios: 1st: 4.56, 2nd: 2.97, 3rd: 2.08, 4th: 1.69, 5th: 1.27, 6th: 1.00, 7th: 0.85, 8th: 0.65, Reverse: 3.82


  • Use with LT1 crate engines
  • Includes torque converter, controller and harness.
  • Must be used with compatible LT1 engine controller (P/N 19355167)

Supersedes old P/N 19356329.


This is superseded by P/N 19417579.

Click here for new part.

12-month, unlimited mileage warranty unless purchased as part of a Connect & Cruise Powertrain System. (Connect & Cruise components are covered by a 24-month or 50,000 mile warranty.)


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Prop65WARNING: These auto parts can expose you to chemicals including phthalates and lead. Installing or using these parts can expose you to other parts containing these chemicals and to engine exhaust, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to