Factory 4L80E automatics are built around a stock power curve, and the stock clutches and hard parts start slipping and burning up once horsepower climbs into serious performance territory. This FTI Performance Level 3 build steps up the internal upgrades further to handle four-digit horsepower without giving up daily drivability.

FTI Performance FTK4L8-3L2 4L80E Transmission Features:

• Level 3 internal upgrade package
• 1000HP rating
• Late Style input/output
• SRLS43082 billet torque converter, 3000RPM stall
• Includes locking filler tube, dipstick, and high performance ATF
• Sold Individually