Holley C10 LEVEL 3 LS SWAP - 4L80

The Holley C10 LEVEL 3 LS SWAP - 4L80 is a comprehensive swap essentials mounting package engineered to simplify the installation of a Gen III/IV LS engine and 4L80E automatic transmission into your classic GM truck. This premium Level 3 kit takes the guesswork out of your project by bundling matching engine mounts, transmission crossmembers, an oil pan kit, and exhaust manifolds to ensure optimal driveline angles and maximum crossmember clearance.

Key Features

CAD-designed to optimize driveline angles, minimize vibration, and maximize power delivery
Engine and transmission mounting components matched for a factory-style fitment
Included oil pan kit provides maximum crossmember clearance for a guaranteed fit
Bundled with high-clearance exhaust manifolds to seamlessly integrate with your setup

Fitment

1975-1986 Chevrolet C10 and GMC C15 / C1500 Trucks
1975-1986 Chevrolet/GMC Suburban and K5 Blazer / Jimmy models
1987 Chevrolet/GMC R10 / R1500 and Suburban models

Note: Designed specifically for Gen III/IV LS engine swaps paired with 4L80E transmissions. Please verify specific vehicle configuration and crossmember design prior to starting your installation.