LS 454CI 750HP Race Engine

Estimated Cost From: $19,995.00

Pay a 50% deposit per item

Our complete LS 454CI 750HP Race Engine prep crate engine package dyno tested ready for installation. This build features higher quality parts from the ground up. Some of this engines main features include a new aluminum GM Gen IV 6 bolt block with (Power Bore) big bore sleeves, completely forged bottom end, custom ground mechanical roller camshaft, 12.0:1 compression, performance AFR CNC ported cylinder heads, full roller rocker arms and a muscle car oil pan designed to fit almost every application. We can also assist you in picking out the correct motor mount and header combination that will fit your hot rod, as well as a complete serpentine pulley kit and transmission.

  • LS 454CI 750HP Race Engine
  • Fully Machined GM Gen 4 Aluminum Block With Power Bore Sleeves
  • 4340 forged steel 4.125” stroke crankshaft (Eagle, or Scat)
  • H-Beam Rods 6.125”
  • Performance Forged Pistons (Mahle, Wiseco, DSS, or JE)
  • Complete Assembly Internally Balanced
  • Comp Cams Custom Ground Mechanical Roller Camshaft
  • Mechanical Roller Tie-Bar Lifters
  • Timing chain set
  • Melling Oil pump
  • AFR Fully CNC Machined LS3 Mongoose Performance Cylinder Heads
  • 2.165 8mm Bead Lock Intake Valve
  • 1.60 8mm Bead Lock Intake Valve
  • PAC 1.295” Dual Performance Valve Springs
  • 7 Degree Valve Retainers And Locks
  • Roller Rocker Arms 
  • Chrome Moly Pushrods
  • ARP Main Studs
  • ARP Head Studs
  • Aluminum Timing And Rear Cover
  • Aluminum Valley Tray
  • Muscle Car Stroker Oil Pan
  • Aluminum Valve Covers (Holley Tall)
  • Harmonic Balancer
  • Water Pump
  • Fabricated Intake Manifold
  • Cable Driven Throttle Body
  • Oil And Filter
  • MSD Coil Packs
  • Calibrated ECU (Holley Terminator X)
  • Main ECM Engine Wiring Harness
  • Coil Pack Harness
  • Fuel Injector Harness
  • 8MM Plug Wires
  • Wide Ban O2 Sensor
  • Intake Air Temperature Sensor
  • Crankshaft Position Sensor
  • Camshaft Position Sensor
  • Engine Coolant Temperature Sensor
  • Manifold Air Pressure Sensor
  • Spark plugs
  • Fuel Injectors
  • Engine will be dyno tested with a starting tune – EFI system has self-tune capabilities
  • No Warranty!

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 Most other suppliers of turn-key engine packages will use out-of-date MEFI ECM’s and harnesses that do NOT allow the engine to make fueling or timing changes when running, nor will they allow for any needed changes with varying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!