SuperMatic™ 8L90-E Eight-Speed Automatic Transmission for LT4 Crate Engine - 19419799

SuperMatic™ 8L90-E Eight-Speed Transmission

Chevrolet Performance has adapted the production-based 8L90-E eight-speed automatic transmission for use with the LT1 and LT4 crate engines. A numerically high 4.56 first gear ratio offers strong take-off performance while a wide 7.0:1 overall ratio helps enhance cruising efficiency.

Additional highlights:

• Compatible with 3-pin LT design engines only
• Four gearsets for efficiency
• Five clutches: two brake clutches and three rotating clutches
• Friction-reducing features include synthetic fluid
• 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
• Controller and harness included
• Torque converter included (engine specific)

Note: Use with LT4 crate engine P/N 19431955 (wet sump); Includes torque converter, controller and harness; Must be used with compatible engine controller