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LS376/525

LS376/525

QUALITY PARTS.
HIGH-CALIBER BUILD.

Offer Valid 1/1/24 to 12/31/24

$250 rebate* on the purchase of a Chevrolet Performance Transmission within 180 days of the purchase of any Chevrolet Performance Crate Engine**. Rebate amount dependent on the package purchased.

QUALITY PARTS.
HIGH-CALIBER BUILD.

Offer Valid 1/1/24 to 12/31/24

$250 rebate* on the purchase of a Chevrolet Performance Transmission within 180 days of the purchase of any Chevrolet Performance Crate Engine**. Rebate amount dependent on the package purchased.

COMPLETE YOUR PERFECT BUILD

OFFER VALID 1/1/23 TO 12/31/23.

$250 rebate on the purchase of a Chevrolet Performance Transmission within 180 days of 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.
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PROPOSITION 65 WARNING.
Click for more details.

Fuel-injected ferocity 

With Chevrolet Performance’s aggressive ASA camshaft  installed in the LS3 6.2L engine, it comes alive with 525 uncompromising horsepower.

$19,157 MSRP

PART NO. 19434642

WhyBuy

525 HP @6200 RPM

WhyBuy

486 LB-FT @5200 RPM

Take-no-prisoner performance 

The ASA camshaft is a hydraulic roller with .525-inch lift on both sides, along with 226 degrees duration on the intake side and 236 degrees on the exhaust side. And for durability, we complement the cam with higher-rate valve springs.

Installation Guides

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

Connect & Cruise Powertrain System

Connect & Cruise Crate Powertrain Systems provide factory-matched engine-and-transmission combinations that include specially calibrated controllers and wire harnesses designed for retrofit installations in older vehicles.  

Parts and labor warranty when installed by a GM Dealer or qualified installing independent Service Center (ISC) or when sold over the counter and REPAIRED by a GM Dealer or qualifying ISC. Parts only when consumer repaired or installed in non-highway application. Coverage limited to defects in material and/or workmanship of the specific part only. Warranty valid when all required components are installed on the same vehicle and purchased on one invoice.

††Must be purchased from a participating U.S. dealer or Chevrolet Performance Authorized Reseller. Mail-in rebate offer not available with other offers. See gmpartsrebates.com for details, applicable rebate amounts, and rebate form. Rebates must be submitted by 1/31/25. Rebates may be submitted over two invoices within 120 days of each other. Allow 6 to 8 weeks for delivery of debit card. Offer valid 1/1/24 to 12/31/24.

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. Rebate form and details available at chevrolet.com/performance/offers.

Project Cars

These passion projects were brought to life with a convenient Connect & Cruise Powertrain System.

1988 MONTE CARLO SS 

An icon reborn. 

G-body heritage meets the modern power of the LS376/525 crate engine and T56 Super Magnum 6-speed transmission in this 1988 Monte Carlo.

LS376-525 Tech Specs

  • Part Number: 19434642
  • 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 (P/N 12623967): Cast aluminum with six-bolt, cross-bolted main caps
  • Crankshaft (P/N 12685659): Nodular iron
  • Connecting Rods (P/N 12607475): Powdered metal
  • Pistons (P/N 19207287): Hypereutectic aluminum
  • Camshaft Type (P/N 88958770): Hydraulic roller
  • Valve Lift (in.): 0.525 intake / 0.525 exhaust
  • Camshaft Duration (@0.050 in.): 226° intake / 236° exhaust
  • Cylinder Heads (P/N 12629063): 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, roll trunnion
  • Rocker Arms (P/N 10214664 exh): Investment-cast, roll trunnion
  • Rocker Arm Ratio: 1.7:1
  • Recommended Fuel: Premium pump
  • Maximum Recommended rpm: 6600
  • Reluctor Wheel: 58X
  • Balanced: Internal
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Mobil 1 is now The Official Motor Oil of Chevrolet Performance.

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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.