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LT4 WET SUMP CRATE ENGINE

LT4 WET SUMP CRATE ENGINE

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.

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

PROPOSITION 65 WARNING.
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PROPOSITION 65 WARNING.
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Supercharged power 

As the heart of the C7 Corvette Z06, the supercharged LT4 6.2L SC is the second most powerful engine ever offered in a regular-production Chevrolet.

PART NO. 19431955

WhyBuy

640 HP @ 6400 RPM

WhyBuy

630 LB-FT @3600 RPM

Engineered for supremacy

The LT4 features a 1.7L Eaton R1740 TVS supercharger, which spins at up to 20,000 rpm. That’s enough to generate more than 9 pounds of boost and help produce 640 horsepower and 630 lb.-ft. of torque.

TRANSMISSION OPTIONS

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.

1970 CAMARO RS

Classic muscle, modernized.

The uncompromising 650-hp LT4 and T56 Super Magnum 6-speed manual take the iconic street cred of a 1970 Camaro RS to a new level.

Installation Guides

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

LT4 Tech Specs

  • Part Number: 19431955
  • Engine Type: Direct Injection spark-ignition Gen-V 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: Cast aluminum with 6-bolt nodular iron main bearing caps
  • Crankshaft: Forged steel
  • Connecting Rods: Forged powdered-metal steel
  • Pistons: Forged aluminum
  • Camshaft Type: Hydraulic roller
  • Valve Lift (in.): .492 intake / .551 exhaust
  • Camshaft Duration (@0.050 in.): 189° intake / 223° exhaust
  • Cylinder Heads: A356-T6 rotocast aluminum; as cast with 65.5cc chambers
  • Valve Size (in): 2.130 intake / 1.590 exhaust
  • Compression Ratio: 10.0:1
  • Required Fuel: Premium pump
  • Maximum Recommended rpm: 6600
chevy-engine-icon
chevy-engine-icon

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.