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

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 (requires a Gen IV 6.0-6.2L intake manifold).

Enhance your LS engine with premium components designed for performance, reliability, and style. The FiTech 70014 Ultimate LS EFI kit is tailored for DIY enthusiasts, offering full control over engine and transmission tuning for LS3 and 6.2L L92 engines with rectangular port cylinder heads, supporting up to 750 HP. It includes a fabricated sheet metal intake manifold with short runners, a 102mm billet throttle body, 55 lb/hr fuel injectors, a color touchscreen handheld controller with data logging, a self-learning ECU, wiring harness, wideband O2 sensors, and GM transmission control (4L60E, 4L65E, 4L80E, 4L85E). The Deluxe AN6 LS Swap Fuel Filter Regulator, with an integrated 58psi regulator and 5-micron filter, supports up to 450 HP naturally aspirated, featuring AN6 fittings for direct connection, eliminating adapters, and reducing return line length. Earl’s Vapor Guard hose and hose ends (3/8", 225 psi, black) combat modern fuel degradation with a multi-layer design for durability and leak-free performance. Lightweight aluminum -6 AN to 1/4" pipe adapters ensure precise, leak-proof connections. The MSD in-line fuel pump (43 gph at 60 psi, 3/8" hose barb inlet/outlet) supports up to 500 HP EFI setups with a clog-resistant roller vane mechanism. These components, backed by trusted engineering from Chevrolet Performance, FiTech, Earl’s, and MSD, 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 Engine Management: FiTech 70014 EFI kit offers precise tuning and transmission control for LS3 and 6.2L L92 engines up to 750 HP.

• Optimized Fuel System: Deluxe AN6 fuel filter regulator, Earl’s Vapor Guard hose, and MSD fuel pump ensure efficient, durable fuel delivery for EFI swaps.

• Reliable and Stylish Design: Components from FiTech, Earl’s, and MSD provide trusted craftsmanship with a professional, high-performance aesthetic.

• 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