ls376 b8


cp-2016-engines-detail-LSX376 B8-masthead.jpg



476 HP

@5900 RPM



475 LB-FT


A factor-built foundation for forced induction

Boost on a budget. That’s what you get with the LSX376-B8. Chevrolet Performance takes the economical LSX Bowtie standard-deck block, adds blower-friendly 9.0:1 forged pistons, and combines them with the LS3’s high-flow, rectangular-port heads to create an affordable foundation for supercharged and turbocharged combinations.


The LSX376-B8 is designed for lower-boost applications, up to about 8 pounds. That’s suitable for most supercharger and turbo kits that are designed to be used with production-based applications.


We deliver the LSX376-B8 without an intake manifold and other accessories to keep the price lower and enable the installer to tailor the induction system to suit the blower or turbo system. Put this great engine in a vehicle originally equipped with an LS engine to give it a stronger bottom end for forced induction, or drop it into a street rod or classic muscle car body for a modern update.

Tech Specs

Part Number: 19260831

Engine Type: LSX-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 (P/N 19244055): LSX cast-iron with six-bolt, cross-bolted main caps

Crankshaft (P/N 12597569): Nodular iron

Connecting Rods (P/N 12607475): Powdered metal

Pistons (P/N 19244016): Forged aluminum

Camshaft Type (P/N 12603844): Hydraulic roller

Valve Lift (in.): 0.551 intake / 0.522 exhaust

Camshaft Duration (@0.050 in.): 204° intake / 211° exhaust

Cylinder Heads (P/N 12615879): LS3 rectangular port; with “as cast” 68-cc chambers

Valve Size (in.): 2.160 intake / 1.590 exhaust

Compression ratio: 9:1

Rocker Arms (P/N 12569167 int): Investment-cast, roll trunnion

Rocker Arms (P/N 10214664 exh): Investment-cast, roll trunnion

Rocker Arm Ratio: 1.7:1

Maximum Recommended rpm: 6600

Reluctor Wheel: 58X

Balanced: Internal

Installation Guides

Find everything from the vital data about your engine’s capabilities to how to install it into your build.

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Unless specifically noted to the contrary herein, vehicles equipped with Chevrolet Performance Parts may not meet Federal Motor Vehicle Safety Standards and emissions regulations and should not be operated on public roads. Chevrolet Performance customers are responsible for ensuring their use of Chevrolet Performance complies with applicable federal, state, and local laws, regulations, and ordinances. Many parts intended for racing orother “off-highway” use are not designed or tested for crashworthiness or to meet the safety needs of the motoring public, and may adversely affect the original intended performance or handling characteristics of the vehicle. These parts are designed and intended to be used with experts supervising their installation and use, to help assure the proper and safe operation of the vehicle.

  • The Manufacturer's Suggested Retail Price excludes tax, shipping and installation. Individual retailer pricing may vary. Please see your local dealer or retailer for details.

  • The Manufacturer's Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees and optional equipment. Click here to see all Chevrolet vehicles' destination freight charges.