The Holley Swap Essentials SE1-GMA1-LSX-A is a Level 1 package for installing a GM Gen III/IV LS engine in a 1964-1967 Chevy Chevelle, El Camino, Pontiac GTO, LeMans, Olds Cutlass, 442 & Buick Skylark. Instead of sourcing mounts one piece at a time, the kit groups components that were engineered to work together, which cuts down on test-fitting and mismatched parts during the swap. It is configured for TH400, 200R4 transmission applications with the engine set in the rearward engine position.

Holley SE1-GMA1-LSX-A Compatibility Notes:

• Installs a GM Gen III/IV LS engine with factory-style mounting in the 1964-1967 Chevy Chevelle, El Camino, Pontiac GTO, LeMans, Olds Cutlass, 442 & Buick Skylark chassis
• Configured for TH400, 200R4 transmissions
• Sets the engine in the rearward engine position
• Mount geometry was laid out in CAD to set driveline angles that reduce vibration
• Black polyurethane mount inserts resist twisting better than OEM-style rubber inserts
• Mount design leaves room to route a dual exhaust system up to 3 in. in diameter
• Kit component part numbers: 71221016HKR, 71221018HKR, 71221009HKR, 71223015HKR, 71222008HKR, 12650HKR, 71223029HKR
• Engine, transmission, wiring, fuel system and cooling components are sold separately