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#91607097
$13,358.99
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Deluxe Crate Engine Crate Engine Type
Comes as a Kit
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| Crate Engine Type | Deluxe Crate Engine |
| Compression Ratio | 10.3:1 |
| Engine Displacement | 364 cu. in. |
| Camshaft Type | Hydraulic Roller |
| Cylinder Head Material | Aluminum |
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855.313.9176Quick and Easy Returns
Return PolicyTransform your vehicle with the ATK-tuned GM 5.3L LH6/LC9 engine, a limited-edition (only 50 units) all-aluminum powerhouse crafted for 2005-2009 GM trucks and SUVs. Boasting 475 HP and 430 lb-ft of torque, this non-DOD/AFM engine features a high-performance COMP Cams camshaft (223/231 @50, .610/.617 lift, 112LSA) and robust cylinder sleeves for superior durability. Paired with the innovative Carbon LS1/LS2/LS6 pTR Intake Manifold, offering tunable 6.5–9” velocity stacks and a carbon fiber plenum for minimal heat soak, this setup maximizes power across the RPM range. Enhanced with Speedway Motors’ aluminum timing cover, two-piece valve covers for concealed LS coils, a 92mm CNC-machined throttle body, V-band cast iron exhaust manifolds for 2002–2012 LS engines, and a sleek All American Billet Silverline Series serpentine kit, this package delivers exceptional value for high-performance LS upgrades or new builds. Designed with a Gen III 24X crankshaft and 1X camshaft trigger system, it’s an easy retrofit for 1997–2006 LS-equipped vehicles, reusing existing sensors, exhausts, and mounts, though a Gen IV rectangular port intake manifold is required. Dyno figures based on 750CFM carburetor, Vic Jr. intake, and 1-7/8” headers; EFI systems enhance power output.
Key Features:
Unmatched Performance: Delivers 475 HP and a broad 430 lb-ft torque band, ideal for street, strip, or custom builds.
Seamless LS Swap Integration: Gen III 24X/1X trigger system ensures easy retrofitting into 1997–2006 LS vehicles, reusing components.
Advanced Intake Design: Carbon LS pTR manifold with modular runners optimizes power for high-RPM or mid-range torque applications.
Premium Aesthetics & Durability: Features Speedway Motors timing cover, two-piece valve covers, and Silverline serpentine kit for a polished, aggressive look.
Flexible Induction Options: Fuel injection capable, supports stock EFI, aftermarket intakes, or transferred components for custom setups.
Engine Specifications:
HP/TQ: 475 HP / 430 lb-ft
Block: New GM 5.3L Aluminum, 3.780” bore x 3.622” stroke, 323 cu.in
Camshaft: COMP Cams Hyd. roller (54-457-11)
Heads: OE 799/243 aluminum (Gen IV rectangular port), 65cc, 2.000”/1.575” valves
Compression: 9.9:1 with hypereutectic flat-top pistons
Recommended Components:
Fuel: 91 Octane, OE EFI or Gen IV 6.0-6.2L rectangular port intake manifold
Oil: 5W30
Headers: 1-7/8” (application-dependent)
Stall Converter: 2200+ RPM
Timing: Factory specs via PCM tune (chassis dyno tune required)
Notes: Requires chassis dyno tune and AFM/DOD deactivation in ECM for swaps. Power varies with induction system. Includes valve and timing covers; no oil pan/pump. Gen IV rectangular port intake manifold (e.g., 6.0-6.2L Gen IV truck/car) required.
Disclaimer: Power figures depend on user-selected components. Verify component compatibility; vehicle modifications may be required. ATK reserves the right to substitute parts if needed.
Specs
Guides & Documents
Chevrolet Performance Crate Engines include a 24-month or 50,000-mile/80,000-kilometer limited warranty.
Warranty Information (PDF)
| KEY SPECS | |
|---|---|
| MFG. Part # | 91607097 |
| Brand | Speedway Motors |
| Crate Engine Type | Deluxe Crate Engine |
| Compression Ratio | 10.3:1 |
| Engine Displacement | 364 cu. in. |
| Camshaft Type | Hydraulic Roller |
| Cylinder Head Material | Aluminum |
| Piston Material | Hypereutectic Aluminum |
| Crankshaft Material | Nodular Iron |
| Carburetor Included | No |
| Intake Manifold Included | Yes |
| Distributor Included | No |
| Connecting Rod Material | Powdered Metal |
| Valve Covers Included | Yes |
| Engine Balance | Internal |
| Cylinder Heads Included | Yes |
| Rear Main Seal Style | 1-piece |
| Throttle Body Included | Yes |
| Timing Cover Included | Yes |
| Oil Pan Included | No |
| Water Pump Included | No |
| Harmonic Balancer Included | No |
| Flexplate Included | No |
| Flywheel Included | No |
| Air Cleaner Included | No |
| Spark Plugs Included | No |
| Spark Plug Wires Included | No |
| Computer Included | No |
| Wiring Harness Included | No |
| Reluctor Wheel | 24x |
| Spark Plug Style | Stock |
| GENERAL | |
| Torque | 440 ft./lbs. |
| Horsepower | 425 horsepower |
| Combustion Chamber Volume | 68cc |
| Camshaft Duration (.050 in) | 204° intake / 218° exhaust |
| Bore x Stroke (in) | 4.000" x 3.622" |
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