LS Gen III 6.0L Crate Engine Kit, 364HP/450TQ, Carburetor

The Chevrolet Performance LS long block is a high-performance solution for enthusiasts seeking a powerful upgrade or a robust foundation for custom builds. Engineered with proven Gen III and Gen IV small-block technology, introduced by General Motors in 1997 with the all-aluminum LS1 in the C5 Corvette, this long block delivers exceptional horsepower and a broad torque band. Ideal for retrofitting older LS-equipped vehicles (1997–2006 Gen III small-block V8s) or powering new projects, it features a 24X crankshaft trigger and 1X camshaft trigger system for seamless integration with existing sensors, exhaust systems, and engine mounts. The advanced design incorporates high-flow rectangular cylinder head intake ports from Gen IV LS3 engines, outperforming earlier Gen III intake ports, and supports fuel injection with the flexibility to reuse existing induction components or custom configurations. A new intake manifold from a Gen IV vehicle (6.0-6.2L) with rectangular intake ports is required to accommodate these heads.

Enhance your LS engine with premium components designed for performance and reliability. The MSD LS Ignition (black) meets the growing demand for a powerful, adaptable ignition system for GM LS engines. It offers six preprogrammed timing tables, a rotary selector switch for on-the-fly adjustments, high-speed data acquisition, optional coolant temperature sensor input, idle timing control, individual cylinder timing, and programmable step/launch/max rev limiters. Compatible with all MSD, Accel, and GM LS coils, it’s ideal for stock crate engines or custom powerhouses, requiring no PC for basic functionality and supporting nitrous and boost applications. The Edelbrock AVS2 650 CFM carburetor, with annular flow primary boosters, ensures smooth transitions from idle to full throttle, eliminating flat spots and offering easy tuning for small and big block engines. Its square flange fits various intake manifolds, and it includes metering jets (Primary .101, Secondary .098), metering rods (.070 x .037), and an orange step-up spring (5" Hg). Complementing the carburetor, a reusable chrome air cleaner assembly with a washable filter element fits the common 5-1/8" carb neck, providing a durable, stylish solution that eliminates the need for paper filter replacements. These components, backed by trusted engineering from Chevrolet Performance, MSD, and Edelbrock, deliver unmatched performance and aesthetics for street or strip applications.

• High-Performance LS Engine: Chevrolet Performance LS long block delivers exceptional horsepower and torque for enthusiasts and custom builders.

• Versatile Compatibility: Supports 1997–2006 Gen III LS engines, ensuring seamless retrofitting with existing sensors, exhausts, and mounts.

• Advanced Ignition Control: MSD LS Ignition offers preprogrammed timing tables, individual cylinder timing, and nitrous/boost compatibility for precise performance tuning.

• Optimized Air and Fuel Delivery: Edelbrock AVS2 650 CFM carburetor with annular flow boosters and reusable chrome air cleaner ensure smooth operation and durability.

• Durable and Stylish Design: Components from Chevrolet Performance, MSD, and Edelbrock provide reliable craftsmanship with a professional, high-performance look.

Installation Instructions (PDF)

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): 204° intake / 218° 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