Product Summary

LS3, Long Block Crate Engine Type, 473 ft./lbs. Torque

  • Features a 1-piece rear main seal style
  • Camshaft duration is 219° intake / 228° exhaust
  • Has a long block and a aluminum cylinder head material
  • This 376 C.I.D. engine produces 495 horsepower and 473 lb.-ft of torque
  • Pistons are made from hypereutectic aluminum and the crankshaft is made for nodular Iron

Key Specs

MFG. Part #19370411
BrandChevrolet Performance Parts
Crate Engine TypeLong Block
Engine Displacement376 cu. in.

Need To Know

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The engineers at GM Performance never stop tinkering. When the engineers took a production LS3 6.2L (376 cubic inches) engine and swapped the stock camshaft for the racing-inspired LS Hot Cam, the result was a stunning 495 horsepower and 473 lb-ft of torque.

GM Performance wasted no time in adding that terrific combination – dubbed LS376/480 – to their crate engine portfolio. The key to the power boost is the Hot Cam’s 0.525-inch lift on both the intake and exhaust sides, along with 219-degree/228-degree duration specs. That’s less lift on the intake side than the stock LS3 cam, but considerably more duration, allowing the valves to stay open a little longer to draw in more air from the rectangular-port L92-style heads.

  • 376 C.I.D
  • 480 HP
  • Long block
  • Aluminum cylinder head material
  • Internal engine balance
  • 1-piece rear main seal style
  • Sold each

Installation Instructions



CARB Warning

Follow EPA, CARB, and state regulations for engine changes

Emissions warning: this part is for vehicle engine changes, not direct oem engine replacements. In California, engine changes are legal when done in compliance with California bureau of automotive repairs (bar) engine change policy. For assistance, call bar referee at: (800) 622-7733. And see https://bar.Ca.Gov/consumer/smog_check_program/engine_changes. All customers must comply with federal epa mobile source enforcement memorandum no. 1a (and addendum) and all applicable state regulations when conducting engine changes. Improper installation and/or use of this part in California may subject the installer and/or owner to a $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and laws of all states for use of this engine change part on makes or models of vehicles that render them noncompliant with applicable state and/or federal emission laws with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine


MFG. Part #19370411
BrandChevrolet Performance Parts
Crate Engine TypeLong Block
Engine Displacement376 cu. in.
Horsepower495 horsepower
Compression Ratio10.7:1
Torque473 ft./lbs.
Maximum RPM6600
Camshaft TypeHydraulic Roller
Cylinder Head MaterialAluminum
Piston MaterialHypereutectic Aluminum
Crankshaft MaterialNodular Iron
Combustion Chamber Volume68cc
Camshaft Duration (.050 in)219° intake / 228° exhaust
Camshaft Lift (in).525 intake / .525 exhaust
Bore x Stroke (in)4.065 x 3.622 (103.25 x 92mm)
Intake Manifold IncludedYes
Connecting Rod MaterialPowdered Metal
Warranty24 month or 50,000 mile
Valve Covers IncludedYes
Engine BalanceInternal
Cylinder Heads IncludedYes
Throttle Body IncludedYes
Oil Pan IncludedYes
Timing Cover IncludedYes
Water Pump IncludedYes
Harmonic Balancer IncludedYes
Flexplate IncludedYes
Spark Plugs IncludedYes
Spark Plug Wires IncludedYes
Computer IncludedNo
Cylinder Head StyleAssembled
Intake Valves IncludedYes
Intake Valve Diameter2.165"
Exhaust Valves IncludedYes
Exhaust Valve Diameter1.590"
Valve Spring IncludedYes
Rocker Arm Studs IncludedYes
Rocker Arms IncludedYes
Accessory Bolt Holes DrilledYes
Heat CrossoverYes
Head Gaskets IncludedYes
Intake StyleElectronic Fuel Injection
Intake Gaskets IncludedYes
Intake Manifold Fasteners IncludedYes
Camshaft IncludedYes
Intake Duration (.050" Lift)219°
Exhaust Duration (.050" Lift)228°
Lifters IncludedYes
Cylinder HeadsAluminum L92-style port; "as cast" with 68-cc chambers
Valve Size (in)2.165 intake / 1.590 exhaust
Rocker ArmsInvestment-cast, roller trunnion
Rocker Arm Ratio1.7:1
Recommended FuelPremium
Maximum Recommended RPM6600
Reluctor Wheel58x
Internally BalancedYes
Displacement376 (6.2L)
BlockCast-aluminum with six-bolt, cross-bolted main caps
PistonsHypereutectic Aluminum
Sold in QuantityEach