LSX376-B15


KICK YOUR PERFORMANCE
INTO OVERDRIVE.

OFFER VALID 1/1/22 TO 12/31/22.

$250 rebate on the purchase of a Chevrolet Performance Transmission within 180 days after the purchase of any Chevrolet Performance Crate Engine

KICK YOUR PERFORMANCE
INTO OVERDRIVE.

OFFER VALID 1/1/22 TO 12/31/22.

$250 rebate on the purchase of a Chevrolet Performance Transmission within 180 days after the purchase of any Chevrolet Performance Crate Engine

PARTS INTENDED FOR COMPETITION USE ONLY.
Click for more details.

PARTS INTENDED FOR COMPETITION USE ONLY.
Click for more details.

PROPOSITION 65 WARNING.
Click for more details.

PROPOSITION 65 WARNING.
Click for more details.

Supports more boost

For builders who want to stretch the performance of a turbocharged or supercharged combination, the LSX376-B15 is the foundation they need.

PART NO. 19355575

WhyBuy

473 HP @6000 RPM

WhyBuy

444 LB/FT @5000 RPM

Withstands the pressure

The LSX376-B15 is durable, and its all-forged rotating assembly supports up to 15 pounds of boost. The engine is topped off with high-flow, LSX-LS3 6-bolt rectangular-port heads to create an affordable foundation for supercharged and turbocharged combinations.

Installation Guides

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

LSX376-B15 Tech Specs

  • Part Number: 19355575
  • 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 12603616): Forged steel
  • Connecting Rods (P/N 12604857): Forged powdered metal
  • Pistons (P/N 19259381): Forged aluminum
  • Camshaft Type (P/N 12638426): Hydraulic roller
  • Valve Lift (in.): 0.560 intake / 0.555 exhaust
  • Camshaft Duration (@0.050 in.): 210° intake / 230° exhaust
  • Cylinder Heads (P/N 19201805): LSX-LS3 rectangular port; with “as cast” 68-cc chambers/six-bolt attachment
  • Valve Size (in.): 2.160 intake / 1.550 exhaust
  • Compression ratio: 9.0:1
  • 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 that are emissions-related may not meet U.S., Canadian, and state and provincial laws and regulations relating to motor-vehicle emissions. These parts are designed and intended for use in vehicles operated exclusively for competition: in racing or organized competition on courses separate from public streets or highways. Visit www.chevroletperformance.com/emissions for more details.