Chevrolet Performance LT4 Supercharged 376ci / 6.2L Engine

$15,580.42

LT4 Supercharged 376ci / 6.2L Engine

Wet Sump Oil System
650 HP @ 6,000 RPM
650 ft.-lbs. TQ @ 4,600 RPM
Cast Aluminum Block

Category: Engines and Components

Description
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Chevrolet Performance LT4 Supercharged 376ci / 6.2L Engine
Part Number: 809-19431955

Crate Engine

Wet Sump Oil System
Installation Notes:
- Assembly does not include electronics – use P/N 809-19418595 LT4 Controller Kit to operate the engine
- A dry-sump engine requires production or aftermarket oil lines and an oil tank (not included)
- Flywheel included
- Assembly does not include electronics
- Intended for pre-1976 street vehicles or any off-road vehicles
- Not intended for marine applications
- The crankshaft has 8-bolt flywheel mounting pattern
- The engine includes Direct Injection and VVT
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.

19431955 supersedes 19418844

Specifications:

Assembled – Yes

Horsepower – 650

Cylinder Heads Included – Yes

Intake Manifold Included – Yes

Throttle Body Included – Yes

Oil Pan Included – Yes

Timing Cover Included – Yes

Water Pump Included – Yes

Harmonic Balancer Included – Yes

Valve Covers Included – Yes

Spark Plugs Included – Yes

Spark Plug Wires Included – Yes

Fuel Delivery – Fuel Injection

Computer Included – No

Wiring Harness Included – No

Quantity – Sold individually

Engine Displacement – 6.2L/376

Intake Manifold Type – Fuel Injection

Shipping Weight: – 596

Package Height: – 41

Package Depth: – 34

Package Width: – 32

Part Category: – Performance Parts

The all-new LT4 supercharged 6.2L V8 is the latest high-tech small-block crate engine from Chevrolet Performance. The perfect balance of performance and efficiency, the LT4 leverages the technologies introduced on the 2014 Corvette Stingray’s LT1 Gen-V small block, including Direct Injection and continuously Variable Valve Timing. The LT4 is based on the same architecture as the LT1 engine, with several unique features designed to support its higher output and the greater cylinder pressures created by forced induction.
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It includes the Rotocast A356T6 aluminum cylinder heads that are stronger and handle heat better than conventional castings, lightweight titanium intake valves and stronger forged aluminum pistons. While advancing the supercharging technologies established with the previous-generation Corvette ZR1’s LS9 engine. This engine features the more-efficient, more-compact 1.7L Eaton R1740 TVS supercharger, which spins at up to 20,000 rpm. That’s enough to generate more than 9 pounds of boost. The result is a surprisingly efficient engine capable of producing 650 horsepower and 650 lb-ft of torque. This LT4 crate engine is offered with a wet-sump or dry-sump oiling system. A controller specially designed for retro-fit application is available. There are also all-new transmission installation kits specially designed to match the LT4 and its 8-bolt crankshaft flange with Chevrolet Performances 4L-series four-speed automatic transmissions and the T-56 Super Magnum six-speed manual.LT4 376ci / 6.2L TECH SPECS:

Engine Type: Direct injection spark ignition Gen V Small-Block V8

Displacement: 376ci (6.2L)

Bore x Stroke: 4.065” x 3.622” (103.25 x 92mm)

Block: Cast aluminum with 6-bolt, cross-bolted main bearing caps

Crankshaft: Forged steel, 8-bolt

Connecting Rods: Forged powdered-metal steel

Pistons: Forged aluminum

Compression Ratio: 10.0:1

Camshaft Type: Billet steel hydraulic roller

Valve Lift: .492” intake/ .551” exhaust

Camshaft Duration (@.050 in.): 189° intake / 223° exhaust

Cylinder Heads: A356T6 Rotocast aluminum, As-cast with 65.5cc combustion chamber

Valve Size: 2.130” intake / 1.590” exhaust

Rocker Arms: Investment-cast, roller trunnion

Rocker Arm Ratio: 1.81:1

Recommended Fuel: Premium

Maximum Recommended RPM: 6600

Reluctor Wheel: 58X

Balanced: Internal