GM Performance LS 376/480 LS3 Long Block Crate Engines (PART #GMP-19434646)

If you take an already great LS3 engine and add a high performance racing-inspired GM Performance camshaft, the results are this completely streetable high performance engine with almost 500 hp and 473 lbs.-ft. of torque! The LS3 from the C6 Corvette and the brand new Chevy SS is already inspiring, but this modified version puts out over 50 hp more than in its factory formaand it provides a truly exciting heartbeat for your hot rod build.

GM Performance LS 376/480 LS3 long block crate engine specs and notes:

  • Crate engine does NOT include the ECM controller kit
  • 495 hp at 6,200 rpm
  • 473 ft.-lbs. torque at 5,000 rpm
  • Compression ratio: 10.7:1
  • Block: Cast aluminum with 6-bolot, cross-bolted main caps
  • Requires Premium 93-Octane fuel
  • Crankshaft: Nodular iron, 3.622 in.
  • Heads: Aluminum LS3 style port; as cast with 68cc chambers
  • Valves: 2.16 in. / 1.59 in.
  • Camshaft lift: Hydraulic roller 0.525 in. / 0.525 in.
  • Duration at 0.050 in.: 219 degree / 228 degree
  • Uses the Chevrolet SS oil pan assembly
  • Not intended for marine usage
  • Developed by GM for pre-1976 street vehicle engine swaps
  • Engine family: LS Gen 4
  • Engine type: Deluxe Crate Engine Assemblies
  • Engine Size: 376 cu.in. / 6.2L
  • Intake fuel delivery: Factory LS MPI

SPECIFICATIONS

Brand GM Performance
Manufacturer's Part Number 19434646
Part Type Crate Engines
Product Line GM Performance LS 376/480 LS3 Long Block Crate Engines
Crate Engine Family Chevy LS
Actual Engine Displacement 6.2L/376
Crate Engine Cylinder Head Material Aluminum
Engine Block Material Aluminum
Advertised Compression Ratio 10.7:1
Assembled Yes
Engine Balance Internal
Cam Style Hydraulic roller, OE roller
Rear Main Seal Style 1-piece
Intake Manifold Included No
Cylinder Heads Included Yes
Carburetor Included No
Throttle Body Included No
Distributor Included No
Oil Pan Included Yes
Valve Covers Included Yes
Timing Cover Included Yes
Water Pump Included No
Harmonic Balancer 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
Supercharger Included No
Remanufactured No
Quantity Sold individually.

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