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Product Summary

Chevy LS V8, Long Block Crate Engine Type

  • Chevrolet Performance engineers took a production LS3 6.2L (376 cubic inches) and swapped the stock camshaft for the racing-inspired LS Hot Cam
  • The LS3 delivers a stunning 495 horsepower and 473 lb.-ft. of torque, that’s nearly 14 percent more power and torque
  • 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 longer to draw in more air from the rectangular-port L92-style heads

Key Specs

MFG. Part #19419864
BrandChevrolet Performance Parts
Crate Engine TypeLong Block
Engine Displacement376 cu. in.

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Details

An LS3 with a hot cam 

Chevrolet Performance engineers took a production LS3 6.2L (376 cubic inches) and swapped the stock camshaft for the racing-inspired LS Hot Cam.

Hot Performance

The LS3 delivers a stunning 495 horsepower and 473 lb.-ft. of torque. That’s nearly 14 percent more power and torque. 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 longer to draw in more air from the rectangular-port L92-style heads.

LS376-480 Tech Specs

  • Engine Type: LS-Series Gen-IV Small-Block V-8
  • Displacement (cu. in.): 376 (6.2L)
  • Bore x Stroke (in.): 4.065 x 3.622 (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 (in.): .525 intake / .525 exhaust
  • Camshaft Duration (@.050 in.): 219° intake / 228° exhaust
  • Cylinder Heads: Aluminum L92-style port; “as cast” with 68-cc chambers
  • Valve Size (in.): 2.165 intake / 1.590 exhaust
  • Compression Ratio: 10.7:1
  • Rocker Arms (P/N 12569167 int): Investment-cast, roller trunnion
  • Rocker Arms (P/N 10214664 exh): Investment-cast, roller trunnion
  • Rocker Arm Ratio: 1.7:1
  • Recommended Fuel: Premium pump
  • Maximum Recommended rpm: 6600
  • Reluctor Wheel: 58X
  • Balanced: Internal

Charts

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

Specifications

KEY SPECS
MFG. Part #19419864
BrandChevrolet Performance Parts
Crate Engine TypeLong Block
Engine Displacement376 cu. in.
GENERAL
Horsepower495 horsepower
Compression Ratio10.7:1
Torque473 ft./lbs.
Camshaft TypeHydraulic Roller Tappet
Cylinder Head MaterialAluminum
Piston MaterialHypereutectic Aluminum
Crankshaft MaterialNodular Iron
Spark Plug StyleStock
Combustion Chamber Volume68cc
Camshaft Duration (.050 in)219° intake / 228° exhaust
Camshaft Lift (in).525 intake / .525 exhaust
Bore x Stroke (in)4.060" x 3.620"
Carburetor IncludedNo
Intake Manifold IncludedYes
Distributor IncludedNo
Connecting Rod MaterialPowdered Metal
Warranty2 year / 50,000 mile
Valve Covers IncludedYes
AssembledYes
Engine BalanceInternal
Cylinder Heads IncludedYes
Rear Main Seal Style1-piece
Throttle Body IncludedYes
Oil Pan IncludedYes
Timing Cover IncludedYes
Water Pump IncludedYes
Harmonic Balancer IncludedYes
Flexplate IncludedNo
Flywheel IncludedNo
Air Cleaner IncludedNo
Spark Plugs IncludedYes
Spark Plug Wires IncludedYes
Computer IncludedNo
Wiring Harness IncludedNo
Intake Valve Diameter2.165"
Exhaust Valve Diameter1.59"
Cylinder HeadsAluminum L92 style ports
Rocker ArmsInvestment-cast, roller trunnion
Rocker Arm Ratio1.7:1
Recommended FuelPremium
BlockCast-aluminum with six-bolt, cross-bolted main caps
Sold in QuantityEach