Chevrolet Performance LT4 Supercharged 6.2L Wet Sump Crate Engine


  • 650 hp @ 6,400 rpm/650 lb.-ft. @ 3,600 rpm
  • 1.7LEatonR1740 TVS Supercharger w/ Intercooler
  • Coolant Pump for Intercooler Included
  • With WetSump oiling system
  • Use with Connect & Cruise 8-speed auto package

Shipping is free, but there is a delivery fee for residential addresses.

LT4 Supercharged Wet Sump Crate Engine

P/N 194131955

650 hp @ 6,400 rpm / 650 lb.-ft. @ 3,600 rpm

For Connect & Cruise 8-Speed Auto Package

LT4 6.2L Tech Specs:

Part Number: 19418844 (wet sump)
Engine Type: Gen V V-8
Displacement (cu in): 376 cu in 6.2L
Bore x Stroke (in): 4.065 x 3.622 (103.25 x 92mm)
Block (P/N 12619171): Cast-aluminum with 6-bolt, cross-bolted main caps
Crankshaft: Forged Steel
Connecting Rods: Forged powdered-metal steel
Pistons: Forged aluminum
Camshaft Type: Hydraulic roller
Valve Lift (in): 0.492″ intake / 0.551″ 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: 10:1
Rocker Arms (P/N 12619829): Investment-cast, roller bearing trunnion
Rocker Arm Ratio: 1.81:1
Recommended Fuel: Premium Pump
Maximum Recommended RPM: 6,600
Reluctor Wheel: 58x
Balanced: Internal

Installation Notes:

  • Engines shipped with high-pressure direct-injection fuel pump installed
  • Comes with a Corvette oil pan – Use oil hose adaptors P/N 25534412 to adapt AN-12 fittings
  • Assembly does not include electronics
  • Use LT4 Controller Kit, P/N 19355174 for engine operation with 8L90-E 8-speed automatic transmission or P/N 19366789 for 4L75-E 4-speed automatic AND T56 6-speed manual transmissions – Kits include electronic throttle pedal, which is required for throttle input to the ECU
  • Flywheel included
  • Intended for pre-1976 street vehicles or off-highway vehicles only
  • Not intended for marine applications
  • Front-End Accessory Drive Kit, P/N 19332590, can be ordered separately
  • 8-bolt crankshaft flange
  • Shipped with 14″ flexplate
Weight 450 lbs


19368622, 19417413, 19418844

LT4 Wet Sump Supercharged Crate Engine

19431955 Chevrolet Motor

For Connect & Cruise 8-Speed Auto Package

Supercharged Power from the C7 Corvette Z06!

At heart of the Chevy Corvette Z06, the supercharged Chevrolet Performance LT4 6.2L SC crate engine is the most powerful engine ever offered in a regular-production Chevrolet. It features a more-efficient, more-compact 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 650 hp and 650 lb.-ft. of torque.

This LT4 crate motor is based on the same GM Gen V Small Block architecture as the LT1 engine, with several unique features designed to support its higher output and the greater cylinder pressures created by forced induction. They include Rotocast A356T6 aluminum cylinder heads that are stronger and handle heat better than conventional castings, lightweight titanium intake valves and stronger forged aluminum pistons.

This part replaces old P/N 19332621, P/N 19355404 and P/N 19368622 and P.N 19418844.


LT4 S/C 6.2L Wet Sump Crate Engine

Click here to download installation information.

LT4 S/C 6.2L Wet Sump Crate Engine

Chevrolet Performance Crate Engines include a 24-month or 50,000-mile (80,000 kilometer) limited warranty.

Click here for more detailed warranty information.


There are no reviews yet.

Be the first to review “Chevrolet Performance LT4 Supercharged 6.2L Wet Sump Crate Engine”
Prop65WARNING: These auto parts can expose you to chemicals including phthalates and lead. Installing or using these parts can expose you to other parts containing these chemicals and to engine exhaust, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to