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 FT4L8-3L 4L80E Transmission Features:

• Level 3 internal upgrade package
• 1000HP rating
• Late Style input/output
• Torque converter not included
• Sold Individually