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SKU: 19434650


Chevrolet Performance engineers have developed the LS364/450 as a value-driven foundation for hot rod builders and enthusiasts looking to give their earlier LS-powered vehicles a high-performance shot in the arm.
Starting with a strong, economical iron cylinder block and durable rotating assembly, the LS 6.0L features the high-lift LS6 camshaft and the deep-breathing LS3 aluminum cylinder heads. It’s a strong combination with exceptional horsepower and a broad torque band. It is also fuel injection-capable, using production-based components offered in this catalog.
The LS364/450 is designed with the early-style 24X crankshaft and 1X camshaft sensors, enabling easier retro-fit installation in early LS-powered vehicles, including 1998–2002 Camaros, C5 Corvettes, 1999–2006 full-size trucks and SUVs, and other LS vehicles.
  • Tech Specs

    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
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