Chevrolet Performance 19370163 LS364/450 LS Crate Engine

• Excellent value for a high-performance LS upgrade or new build
• Exceptional horsepower and broad torque band
• Easy retrofit into older LS-equipped vehicles
• Fuel injection capable
• Transfer your previous induction components or custom build - your choice!

The engine family commonly called the LS series debuted in 1997. General Motors called it the Gen-III Small-Block, with the iron-block versions in trucks and the all-aluminum LS1 introduced in the then-new C5 Corvette. GM has continued to refer to its modern V-8 engine family as Gen III and Gen IV, but to the enthusiasts who quickly grasped the tremendous performance potential of the engines, every engine of the platform is nicknamed “LS.”

Chevrolet Performance is committed to providing proven, innovative performance technology that is truly.... more than just power. Chevrolet Performance Parts are engineered, developed and tested to exceed your expectations for fit and function.

This long block uses an engine control system based on a 24X crankshaft trigger and a 1X camshaft trigger system that was used on Chevrolet Gen III small-block V8 engines from 1997 thru 2006. For most customers, this will be a replacement for an existing application using a Gen III engine. This will allow the customer to transfer many of the sensors, exhaust system, engine mounts, etc. from the current vehicle to this long block. This long block uses the higher flowing rectangular cylinder head intake ports which were not available for Gen III engines. These heads were used on Gen IV LS3 engines. A new intake manifold will be required from a Gen IV truck or car that used a rectangular intake port. Most 6.0-6.2 Liter Gen IV intake manifolds use this type of rectangular intake port.

Installation Instructions (PDF)

• Part Number: 19370163
• Engine Type: Performance LQ9 long block
• Displacement (cu in): 364 cu in (6.0L)
• Bore x Stroke (in): 4.000 x 3.622 in (101.6 x 92 mm)
• Block: Cast iron with 6-bolt block, cross-bolted main caps
• Crankshaft: Nodular iron
• Connecting Rods: Powdered metal
• Pistons: Hypereutectic aluminum
• Camshaft Type (P/N 12565308): LS6 hydraulic roller
• Valve Lift (in): 0.550 intake / 0.550 exhaust
• Camshaft Duration (@.050 in): 204º intake / 218º exhaust
• Cylinder Heads: LS3 rectangular port; aluminum, as-cast with 68cc chambers
• Valve Size (in): 2.165 intake (hollow stem) 1.590 exhaust (solid stem)
• Compression Ratio: 10.3:1 (nominal)
• Rocker Arms: Investment cast, roller bearing trunnion
• Rocker Arm Ratio: 1.7:1
• Recommended Fuel: Premium pump
• Maximum Recommended rpm: 6,800
• Reluctor Wheel: 24X
• Balanced: Internal