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Chevrolet Performance LSX376-B15 376ci/450HP Engine

Chevrolet Performance
Chevrolet Performance LSX376-B15 376ci/450HP Engine

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Forged Internals and Six-Bolt LSX Heads
That Support More Boost!

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For builders who want to stretch the performance of a turbocharged or supercharged combination, we've got just the foundation you need: Chevrolet Performance's new LSX376-B15, featuring a durable, all-forged rotating assembly to handle up to 15 pounds of boost.

Chevrolet Performance's engineers started with the tough LS steel Bowtie standard-deck block, added a forged-steel crankshaft, forged rods, and forged pistons, then topped off the short-block assembly with high-flow, rectangular-port LSX-LS3 six-bolt aluminum heads for supercharged and turbocharged combinations.

The LSX376-B15 is delivered without an intake manifold and other accessories, allowing you to tailor the induction system and other features to suit the forced-induction setup of your choice. It's perfect as an economical replacement for a late-model performer or a great choice to build a high-boost powerplant for a Pro Touring classic.

*Horsepower and torque ratings were derived by GM Engineering using a normally aspirated LSX376 with LS3 EFI. Your power numbers may vary, based on induction system and componentry.

  • Engine Type: LSX-Series Gen IV Small-Block V-8
  • Displacement: 376ci (6.2L)
  • Bore x Stroke: 4.065'' x 3.622'' (103.25mm x 92mm)
  • Block: LSX cast-iron with six-bolt, cross-bolted main caps
  • Crankshaft: Forged steel
  • Connecting Rods: Forged powdered metal
  • Pistons: Forged aluminum
  • Camshaft Type: Hydraulic roller
  • Camshaft Lift: .560'' intake / .555'' exhaust
  • Camshaft Duration (@.050 in.): 210° intake / 230° exhaust
  • Cylinder Heads: LSX-LS3 rectangular port; with ''as cast'' 68cc chambers and 6-bolt attachment
  • Valve Size: 2.160'' intake / 1.550'' exhaust
  • Compression Ratio: 9.0:1
  • Rocker Arms: Investment cast, roller trunnion
  • Rocker Arm Ratio: 1.7:1
  • Recommended Fuel: 87 octane
  • Maximum Recommended RPM: 6600
  • Reluctor Wheel: 58x
  • Balanced: Internal
  • JEGS Easy Kits are designed by JEGS high performance racing professionals to help you get all the performance parts you need for your race car, hot rod or truck.

    3 Products
    Chevrolet Performance 19299306 - Chevrolet Performance LSX376-B15 376ci/450HP Engine
    LSX376-B15 376ci Engine
  • 450 HP @ 5900 RPM
  • 444 ft/lbs TQ @ 4600 RPM
  • FREE
    Order Today Ships 02/08/16
    Chevrolet Performance 19299306K2 - Chevrolet Performance LSX376-B15 376ci/450HP Engine
    LSX376-B15 376ci Engine Kit
  • 450 HP @ 5900 RPM
  • 444 ft/lbs TQ @ 4600 RPM
  • LSX376-B15 Engine
  • LS3 Intake Manifold Assembly
  • LS3 Engine Controller Kit
  • Muscle Car Oil Pan Kit
  • Ignition Coils
  • $189
    Easy Kits
    Date Unknown
    Chevrolet Performance 19299462 - Chevrolet Performance LSX376-B15 376ci/450HP Engine
    LS9 Engine Controller Kit
    Order Today Ships 02/08/16

    3 Products