L8T 6.6L 401 HP Crate Engine by Pace Performance GMP-19433748-HPX

The Next Generation is Here!

With 401 horsepower and 464 lb.-ft. of torque on tap, the L8T crate engine is the largest-displacement LT-family engine in our lineup, offering plenty of low-rpm torque. Direct injection offers more precise fuel control than port injection, enabling a comparatively high compression ratio of 10.8:1 in the engine, which contributes to its high output.

It’s built with a forged steel crankshaft and other high-strength parts. Additional features such as oil-spray cooling for the pistons and a cast iron, long-skirt cylinder block with six-bolt, cross-bolted main caps contribute to the engine’s strength and durability. Comes with production style exhaust manifolds.

Pace Performance pre-installs the Holley LT swap oil pan to easy install into older vehicles (1967-1992 Camaro/Firebird, 1968-1974 Nova/Apollo/Ventura/Omega, 1978-1987 G-body, 1964-1972 A-body, and 1973-1987 Chevy/GMC Full Size Trucks).
Pace also installs the Holley Lo-Ram intake and adds a 92mm drive by cable throttle body to easy installation. This requires the use of the Holley Terminator-X EFI system (not included).

Specifications:
Power: 401 HP @ 5200 RPM, 464 ft. lbs. of torque @ 4000 RPM
Displacement: 400 CID, 6.6L
Bore x Stroke: 4.060” x 3.860”
Compression Ratio: 10.8:1
Recommended Fuel: 87 Octane
Block: Cast Cast irong with 6 bolt cross bolted main caps
Crankshaft: 8-bolt Forged Steel
Connecting Rods: Forged Powdered Metal Steel
Pistons: Hypereutectic Aluminum
Camshaft: Billet Steel Hydraulic Roller Tappet
Cam Lift: .500” Intake / .492” exhaust
Cam Duration @ .050”: 193 deg. Intake / 199 deg. Exhaust
Lobe Separation: N/A
Cylinder Heads: Aluminum Rectangular Port, Direct Injected
Combustion Chamber: 59cc
Valves: 2.130” Intake/ 1.590” Exhaust
Rocker Arms: Cast Roller Trunnion, 1.81:1 Ratio
Balance: Internal
Reluctor: 58X
Maximum GM Recommended RPM: 5600

Engine Includes:
• Fully GM assembled long block
• Ignition Coils, Plug Wires and Spark Plugs
• Oil pump, pick-up and wet sump oil pan
• Intake, Injectors and Throttle Body
• High Pressure Fuel Pump (installed)
• Harmonic Balancer
• Front timing cover
• Oil Filter
• Passenger Side RH Oil Dipstick and Tube

Warranty:
General Motors limited 2 year / 50,000 mile parts & labor warranty. Click on Document tab above for full details.