This engine package is designed to replicate a classic 4-barrel carburetor and large open-air cleaner while returning the legendary performance and reliability of an LS powerplant.

Modern Classic engines retain the factory GM warranty that features a 2 year/50,000 mile warranty. 

GM Warranty

Note: Does not include alternator serpentine drive kit or distributor and plug wires kit. Corvette LS3 balancer and water pump included.

Engine Specifications

• Engine Type: GM LS-Series Gen IV V-8
• Horsepower: 495 hp at 5750 RPM
• Torque: 473 ft.-lbs. at 4500 RPM

Block Information

• Cast-aluminum with six-bolt, cross-bolted main caps
• Displacement: 376 ci (6.2L)
• Bore/Stroke: 4.065 in. x 3.622 in.

Rotating Assembly

• Crankshaft: Nodular iron
• Connecting Rods: Powdered metal
• Pistons: Hypereutectic aluminum
• Compression Ratio: 10.7:1
• Balanced: Internal (Includes harmonic damper and 14 in. flexplate for automatic transmission)
• Reluctor Wheel: 58X
• Recommended Fuel: Premium pump
• Maximum Recommended rpm: 6600

Camshaft Specs

• Type: Hydraulic roller
• Valve Lift (1.7 Rocker Ratio): .525 in. intake / .525 in. exhaust
• Camshaft Duration (@.050 in.): 219 intake / 228 exhaust
• Lobe Centerline: 112 degrees
• Recommend a 2400-2800 stall converter

Cylinder Heads Specs

• Cylinder Heads: Aluminum Rectangle port L92-style port;
• Combustion Chamber: 68 cc
• Valve Size: 2.165 in. intake / 1.590 in. exhaust
• Rocker Arms: 1.7:1 Investment-cast, roller trunnion

Intake Manifold

• EFI 4150 cast aluminum 
• Throttle body adapter plates
• 92 mm Drive-by-wire (DBW) throttle body
• Billet aluminum fuel rails with fuel injectors
• 14 in. chrome round air cleaner with a white paper filter element
• Valley plate with chrome oil fill breather

Engine Covers

• Small Block Chevy style valve covers cast aluminum natural finish
• 2010-2015 Camaro LS3 mid-sump oil pan (WILL NOT WORK WITH MUSCLE CAR LS ENGINE SWAPS. OIL PAN CHANGE IS REQUIRED FOR MUSCLE CAR LS ENGINE SWAPS)
• OEM aluminum timing cover

Engine Controller

• Includes Holley Terminator X Max System 550-928T
• Plug-play-system with self-learning technology 
• Can operate 4L60E/4L80E automatic transmissions

Also includes high performance rear dump exhaust manifolds.

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.

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

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