CHEVROLET PERFORMANCE Part Number: GMP19432690
Description: 19432690 Chevrolet Performance LS376 450Hp, Replaces 19370163
Chevrolet Performance engineers have developed the LS364/450 6.0L as a value-driven foundation for 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, it features the high-lift LS6 camshaft and deep-breathing LS3 aluminum cylinder heads. It’s a strong combination that provides exceptional horsepower and a broad torque band. It is also fuel inection-capable, using production-based components offered in this catalog. Additionally, the LS364/450 is designed with the early-style 24X crankshaft and 1X camshaft sensors, enabling easy retro-fit installation in early LS-powered vehicles.
We offer the LS364/450 exclusively as a long-block assembly, without the induction system, ignition system or front-end accessory drive system, allowing builders to transfer components from their early LS-powered vehicle or complete a custom build with the components of their choice. An intake manifold that matches the LS3/L92-style rectangular intake ports is required.
INSTALLATION NOTES • Assembly does not include any electronics • Engine is compatible with a vehicle's existing Gen III controller, but tuning is required • Includes LQ9 oil pan • Requires intake manifold matched to LS3- or L92-style rectangular intake ports • LS3 or L96 production intake manifolds can be used, but require an aftermarket adapter plate for use with early LS three-bolt throttle bodies • Not intended for marine applications
TECH SPECS Part Number: 19432690 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 Category: Engines and Components, Engines, Blocks and Components
Notes:
State Restrictions: Air Restricted: NO
Oversized items must be shipped by LTL Truck Freight. Please ship directly to your body shop or commercial address. The item requires a custom shipping quote to be obtained, and then the total will be adjusted to the shipping cost.
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