Chevrolet Performance GM LS376/480 6.2L LS3 Base Crate Engine Long Block Assembly [495 HP 473 ft.-lbs of TQ]

Base Crate Engine

LS376/480 6.2L Performance Crate Engine

Starting with the potent LS3 foundation, GM added the proven GM Hot Cam camshaft to inject extra performance to create the LS376/480 crate engine. 

LS376/480 TECH SPECS

• Engine Type: LS-Series Gen IV Small-Block V-8
• Displacement: 376 ci (6.2L)
• Bore x Stroke: 4.065 in. x 3.622 in. (103.25 x 92 mm)
• Block: Cast aluminum with six-bolt, cross-bolted main caps
• Crankshaft: Nodular iron
• Connecting Rods: Powdered metal
• Pistons: Hypereutectic aluminum
• Camshaft Type: Hydraulic roller
• Valve Lift: .525 in. intake / .525 in. exhaust
• Camshaft Duration (@.050 in.): 219-degrees intake / 228-degrees exhaust
• Cylinder Heads: Aluminum L92-style port; ''as cast'' with 68 cc chambers
• Valve Size: 2.165 in. intake / 1.590 in. exhaust
• Compression Ratio: 10.7:1
• Rocker Arms: Investment-cast, roller trunnion
• Rocker Arm Ratio: 1.7:1
• Recommended Fuel: Premium pump (92-octane)
• Maximum Recommended rpm: 6600
• Reluctor Wheel: 58X
• Balanced: Internal

Installation Notes:

• Will require intake manifold, throttle body, fuel rails, fuel injectors, exhaust manifolds, accessory drive, and an EFI controller
• LS3 is the same size and mounts the same as other LS-Series engines
• Includes a mid-wet sump oil pan installed. This oil pan will ONLY fit 2010-2015 Camaro SS/ZL1, 2012-2017 Caprice PPV, 2014-2017 Chevy SS, 2008-2009 Pontiac G8 chassis. THIS INSTALLED OIL PAN WILL NOT WORK WITH MUSCLE CAR LS ENGINE SWAPS. OIL PAN CHANGE IS REQUIRED FOR MUSCLE CAR LS ENGINE SWAPS.

Engine Break-In Procedure

Use only engine oil that meets dexos1 specifications. For track events or competitive driving, use Mobil 1 15W-50 engine oil. Fill the engine with oil and follow the proper engine priming procedure.  Also check and fill as required any other necessary fluids such as coolant, power steering fluid, etc.

Start the engine and listen for any unusual noises. If no unusual noises are noted, run the engine at approximately 1000 RPM until normal operating temperature is reached.  The engine should be driven at varying loads and conditions for the first 30 miles or one hour without wide open throttle (WOT) or sustained high RPM accelerations.  Run five or six medium throttle (50%) accelerations to about 4000 RPM and back to idle (0% throttle) in gear. Run two or three hard throttle (WOT 100%) accelerations to about 4000 RPM and back to idle (0% throttle) in gear. 

Change the engine oil and filter. Inspect the oil and the oil filter for any foreign particles to ensure that the engine is functioning properly.  Drive the next 500 miles (12 to 15 engine hours) under normal conditions. Do not run the engine at its maximum rated engine speed. Also, do not expose the engine to extended periods of high load.  Change the oil and filter again, inspect the oil and oil filter for any foreign particles to ensure that the engine is functioning properly.

19432424 supersedes 19420384

Specifications:

Part Type

Engine

Cylinder Head Material

Aluminum

Engine Block Material

Aluminum

Engine Make/Size

GM LS

Engine Assembly Style

Long block

Engine Balance

Internal

Assembled

Yes

Horsepower

495

Compression Ratio

10.7:1

Cylinder Heads Included

Yes

Camshaft Style

Hydraulic roller tappet

Intake Manifold Included

No

Carburetor Included

No

Throttle Body Included

No

Distributor Included

No

Oil Pan Included

Yes

Timing Cover Included

Yes

Water Pump Included

No

Harmonic Balancer Included

Yes

Valve Covers Included

Yes

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

Rear Main Seal Style

1-piece

Quantity

Sold individually

Engine Displacement

6.2L

Engine Type

Crate Engine

Shipping Weight:

465

Package Height:

36

Package Depth:

42

Package Width:

32