Chevrolet Performance has adapted the production-based 8L90-E eight speed automatic transmission for use with the LT1, LT4 and LT5 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.

• Four gearsets for greater efficiency
• Five clutches - two brake clutches and three rotating clutches
• World-class upshift speeds
• 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)

Use with LT5 crate engines

Installation Instructions

Instructions PDF Link