*Shown With Optional Upgrades

LS3 376CI 6.2L 525HP Crate Engine With CVF Racing Serpentine Pulley Kit

Estimated Cost $13,595.00

Our LS3 376CI 525HP crate engine package can be dyno tested and tuned ready for installation. This build features an aluminum LS3 6 bolt block. Comes ready to install with the Muscle Car oil pan, Holley Terminator X, and a CVF racing serpentine pulley kit. We can also assist you in picking out the correct motor mount and header combo that will fit your hot rod. 

  • LS3 376CI 525HP Crate Engine:
  • Fully Machined Aluminum Block With 6-bolt cross-bolted main caps
  • Nodular Iron Crankshaft 3.62 Stroke
  • Powdered Metal Connecting Rods 6.125”
  • Hypereutectic Aluminum Pistons
  • Complete Assembly Internally Balanced
  • Hydraulic Roller Camshaft
  • Hydraulic Roller lifters
  • Timing chain set
  • Oil pump
  • Aluminum LS3 Rectangular Port Cylinder Heads
  • 2.165 Intake Valves
  • 1.590 Exhaust Valves
  • GM Performance Valve Springs
  • Rocker Arms 1.7:1
  • Pushrods
  • Main bolts
  • Head bolts
  • Aluminum Timing And Rear Cover
  • Aluminum Valley Tray
  • Aluminum Oil Pan (Muscle Car)
  • Fabricated Aluminum Intake Manifold (Black)
  • Fuel Injectors
  • Fuel Rails
  • Cable Driven Throttle Body (Black)
  • Aluminum LS Valve Covers (Black)
  • Balancer
  • LS3 Style Coils
  • Coil Harness
  • Spark Plugs
  • 8mm Ignition Wires 
  • Holley Terminator X ECU
  • Engine Wiring Harness
  • Fuel Injector Harness
  • Wide Ban O2 Sensor
  • Intake Air Temperature Sensor
  • Crankshaft Position Sensor
  • Camshaft Position Sensor
  • Engine Coolant Temperature Sensor
  • Manifold Air Pressure Sensor
  • Oil And Filter
  • Spark Plugs
  • Engines are photo documented during the building process
  • 2 Year Unlimited Miles Warranty

CVF Racing Black Chevy LS Engine Mid Mount Serpentine Kit  –  AC, Alt, & Power Steering

  • High Flow Aluminum Water Pump
  • GM Type II Power Steering Pump
  • 140 Amp, 1-Wire CS130 Alternator with side mount post
  • Sanden Style Peanut Compressor with 8 Rib Clutch
  • Remote Mount Reservoir with Mounting Bracket
  • Gates Premium Green Strip 8 Rib Belt
  • 8 Rib Water Pump Pulley
  • 8 Rib Crank Pulley
  • 8 Rib Alternator Pulley
  • 8 Rib Power Steering Pulley
  • Spring Loaded Tensioner
  • Single Bracket
  • Hub Adapter for attaching crank pulley to OEM Balancer (or optional Fluidampr SFI Balancer)
  • Billet Compressor Clutch Cover
  • Billet alternator fan

Optional Upgrades:

  • Holley Terminator X-Max ECU For Trans Control Add $450
  • Dyno Testing And Tuning Add $650
  • Shinny Finish (Intake, Throttle Body, Valve covers, Pulley kit) Add $400

All of the Proformance Unlimited turn-key LS engine packages will include an engine harness and an ECM to allow for full engine control and the best driving characteristics possible. Most other suppliers of turn-key engine packages will use out-of-date MEFI ECM’s and harnesses that do NOT allow the engine to make fueling or timing changes when running, nor will they allow for any needed changes with varying altitude. All of our turn-key engine packages will allow your engine to run and function exactly like a new car straight off of the production line! This will not only help the power output, but it will also help to maximize the fuel mileage! If you choose the Fitech ultimate efi w/trans control this will allow for full control of a GM’s 4-speed overdrive 4L60E, 4L65E, 4L70E, and 4L80E electronically-controlled transmission. The competition’s MEFI ECM and harness does not have this capability.

All of our turn-key engine packages will come standard with the GM Performance aluminum valve covers with a coil pack relocation kit and GM Hot Rod Oil Pan Kit. However, we do offer upgrades for all of these items, which are listed above in the drop-down menus. Let us know if you are looking for an item that is not listed, and we will be glad to provide you with a price! The aluminum coil pack relocation kit allows you to hide the ignition coil packs anywhere you would like under the hood, which provides you with a clean and uncluttered engine bay.

All Proformance Unlimited turn-key engine packages will come standard with a one-year, unlimited-mile warranty as standard! This will require all tuning to be performed by us. We stand behind our work, and when you purchase a Proformance Unlimited engine you are not only buying the parts but also the knowledge, experience, and know-how! We know what works and what is required to complete the installation!