Engine Specifications:
\u2022 HP: 475
\u2022 TQ: 430
\u2022 Block: New GM 5.3L Aluminum
\u2022 Bore\/Stroke: 3.780\u201dx 3.622
\u2022 Displacement (cu.in): 323
\u2022 Crankshaft: OEM GM 24 tooth reluctor wheel
\u2022 Rods: Stock GM
\u2022 Pistons: Hypereutectic Flat Top 9.9:1 compression
\u2022 Rings: Moly
\u2022 Camshaft: Hyd. roller
\u2022 Cam Specs: 223\/231 @50 .610\/.617 112LSA COMP CAM #54-457-11
\u2022 Cylinder Heads: OE 799 or 243 aluminum 65cc 2.000\u201d\/1.575\u201d valves
\u2022 Rocker Arms: OE powdered metal 1.7 ratio<\/p>\n
Recommended Components:
\u2022 Oil- 5W30
\u2022 Fuel System \u2013 OE EFI System
\u2022 Intake \u2013 Stock Fuel Injected or Aftermarket
\u2022 Balancer- Stock Internally Balanced
\u2022 Flex plate\/Flywheel- Stock Internally Balanced
\u2022 Spark Plug- Stock
\u2022 Spark Plug Gap- .035\u201d
\u2022 Timing- Set to Factory Specifications Via PCM Module (Tune Required)
\u2022 Firing Order- Stock
\u2022 Fuel \u2013 91 Octane
\u2022 Recommended Stall Converter- 2200+ based on application
\u2022 Headers- 1 7\/8\u201d depending on application<\/p>\n
Notes: This engine is a brand new GM 5.3L that GM built for 2005-2009 Trucks and SUV\u2019s. ATK did a camshaft and valve spring upgrade along with AFM\/DOD delete. For optimal Performance you will need headers, chassis dyno tune (required) and upgraded injectors. If you are using this as a swap for a vehicle mentioned above, the AFM\/DOD will have to be turned off in the ECM. Power figures may vary depending on which induction system is used. Dyno figures are based on using a 750CFM carburetor and Vic Jr. intake manifold with 1 7\/8 headers.<\/p>\n
\u00a0<\/p>\n
Disclaimer: The parts listed are ATK\u2019s recommendations of parts to be used to obtain our power figures listed. Power figures can vary based on parts used by the end user. It is the customer\u2019s responsibility to verify components will work in their application. Some modifications to the vehicle may be required using these and or other aftermarket parts. . ATK reserves the right to substitute parts used in engines if necessary.<\/p>\n
Specs<\/p>\n
Horsepower: 475
Torque: 435 lb\/ft
Block: GM 5.3L Aluminum LH6\/LC9
Bore\/Stroke: 3.780\u2033 x 3.622\u2033
Year Range: 2005-2009
Displacement: 323CI
Crankshaft: OEM GM 3.622\u2033 Stroke Internally Balanced 24 tooth Reluctor wheel
Connecting Rods: OE GM
Pistons: Hypereutectic Flat Top
Piston Rings: Moly Rings
Compression Ratio: 9.9:1 Compression
Camshaft: Hydraulic Roller
Camshaft Specifications: 223\/231 at .050 in .610\/.617 lift with 112 LSA
Camshaft Bearings: Installed & Clocked to OEM Position
Cylinder Heads: OE 799\/243 Aluminum 65cc 2.000\u2033 \/ 1.575\u2033 Valves
Freeze Plugs: Brass Installed & Sealed
Rocker Arms: OE Powdered Metal 1.7 Ratio
Oil Galley Plugs: Installed & Sealed
Weight: 412
*Dyno figures are based on using a 750CFM carburetor and Vic Jr. intake manifold with 1 7\/8 headers. With an EFI system this will pick up power.<\/p>\n
Warranties<\/p>\n
This engine comes with a 2 year\/unlimited mileage warranty to the original purchaser<\/p>\n<\/div>\n<\/div>\n
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