lsx376-b8

LS376-B8 

Through December 31, get a $250 mail-in rebate on all Chevrolet Performance crate engines.

Build boost on a budget 

Chevrolet Performance takes the 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.

PART NO. 19260831

WhyBuy

476 HP @5900 RPM

WhyBuy

475 LB-FT @4700 RPM

Forced-induction friendly

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.

Installation Guides

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

LSX376-B8 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 19260095): LSX cast-iron with six-bolt, cross-bolted main caps
  • Crankshaft (P/N 12685659): Nodular iron
  • Connecting Rods (P/N 12649190): Powdered metal
  • Pistons (P/N 19244016): Forged aluminum
  • Camshaft Type (P/N 12623063): Hydraulic roller
  • Valve Lift (in.): 0.551 intake / 0.522 exhaust
  • Camshaft Duration (@0.050 in.): 204° intake / 211° exhaust
  • Cylinder Heads (P/N 12629063): 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 12669995 int): Investment-cast, roll trunnion
  • Rocker Arms (P/N 12681275 exh): Investment-cast, roll trunnion
  • Rocker Arm Ratio: 1.7:1
  • Recommended Fuel: Regular pump
  • Maximum Recommended rpm: 6600
  • Reluctor Wheel: 58X
  • Balanced: Internal

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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 or other “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.

  • See participating U.S. dealer or authorized powertrain reseller for details and rebate form, which must be postmarked by 1/31/18. Rebates are available to customers who have purchased the parts detailed above at a participating Chevrolet, Buick, GMC, or Cadillac dealer or a powertrain retailer located in the United States. See rebate form for eligible parts and details. Allow 6 to 8 weeks for delivery of debit card. Offer valid 11/1/17 to 12/31/17. Rebate form and details available at chevrolet.com/performance/offers.

  • 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.