LS364/450HP – Gen III 6.0L 24x Long Block

Description

BUDGET-FRIENDLY POWERHOUSE: THE BEST OF THE LS ENGINE FAMILY
Chevrolet Performance engineers created the LS364/450 as an affordable yet powerful solution for hot rod builders and LS enthusiasts who want to boost the performance of their early LS-powered rides.
Built on a sturdy, cost-effective iron cylinder block with a durable rotating assembly, the 6.0L LS engine combines a high-lift LS6 camshaft with deep-breathing LS3 aluminum cylinder heads—a proven setup that delivers outstanding horsepower and a wide torque curve. The engine is fuel injection–ready, compatible with production-based components available in this catalog.
Designed with the early-style 24X crankshaft and 1X camshaft sensors, the LS364/450 makes retrofitting simpler for earlier LS-powered vehicles such as 1998–2002 Camaros, C5 Corvettes, 1999–2006 full-size trucks and SUVs, and other LS platforms.
Chevrolet offers the LS364/450 exclusively as a long-block assembly, without the induction, ignition, or front-end accessory drive systems. This gives builders the flexibility to reuse components from their existing LS setup or create a custom configuration using their preferred parts. Note that an intake manifold compatible with LS3/L92-style rectangular intake ports is required.
No matter what vehicle you install it in, the LS364/450 delivers a winning balance of power, durability, and value, taking your project to the next level of performance.
TECH SPECS
Part Number: 19370163Engine Type: Performance LQ9 long blockDisplacement: 364 cu in (6.0L)Bore x Stroke: 4.000 x 3.622 in (101.6 x 92 mm)Block: Cast iron, 6-bolt with cross-bolted main capsCrankshaft: Nodular ironConnecting Rods: Powdered metalPistons: Hypereutectic aluminumCamshaft Type (P/N 12565308): LS6 hydraulic rollerValve Lift: 0.550 in (intake/exhaust)Camshaft Duration (@.050 in): 204º intake / 218º exhaustCylinder Heads: LS3 rectangular port aluminum, as-cast, 68cc chambersValve Size: 2.165 in intake (hollow stem) / 1.590 in exhaust (solid stem)Compression Ratio: 10.3:1 nominalRocker Arms: Investment-cast, roller bearing trunnionRocker Arm Ratio: 1.7:1Recommended Fuel: Premium pumpMax Recommended RPM: 6,800Reluctor Wheel: 24XBalanced: Internal
INSTALLATION NOTES

Assembly does not include electronics

Compatible with Gen III controllers (tuning required)

Includes LQ9 oil pan

Requires intake manifold matched to LS3/L92-style rectangular ports

LS3 or L96 intake manifolds may be used with an aftermarket adapter plate for early LS three-bolt throttle bodies

Not designed for marine applications