LS7 427CI 625HP Complete Crate Engine

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Our complete LS7 427CI 625HP crate engine package is designed to out perform GM’s LS7 ZO6 Corvette crate engine. This build features higher quality parts from the ground up at a more reasonable cost. Some of this engines main features include a new aluminum LS7 Series 6 bolt block, completely forged bottom end, custom ground hydraulic roller camshaft, performance cylinder heads, full trunnion 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.

  • Fully Machined LS7 aluminum Block
  • Eagle 4140 forged steel 4.00” stroke crankshaft
  • Eagle forged I-Beam Rods 6.125”
  • Performance Forged Pistons (Mahle, Icon, DSS, or JE)
  • Complete Assembly Internally Balanced
  • Comp Cams Custom Ground Hydraulic Roller Camshaft
  • Hydraulic Roller lifters
  • Timing chain set
  • Melling Oil pump
  • LS3/L92 Rectangle Port Aluminum Performance Cylinder Heads
  • 2.165 Pro Series Intake Valves
  • 1.590 Pro Series Exhaust Valves
  • 1.295” Dual Performance Valve Springs
  • 7 Degree Valve Retainers And Locks
  • Rocker Arms With Upgraded Trunnion
  • Manley Chrome Moly Pushrods
  • Main bolts
  • ARP Head bolts
  • Aluminum Timing And Rear Cover
  • Aluminum Valley Tray
  • 5 Quart Muscle Car Oil Pan
  • Intake manifold
  • Aluminum Valve Covers
  • Coil pack bracket
  • Balancer
  • Water Pump
  • Oil And Filter
  • Coil Packs
  • Coil Pack Harness
  • 8MM Plug Wires
  • Fuel injectors
  • Intake Air Temperature Sensor
  • Manifold Air Pressure Sensor
  • Crankshaft Position Sensor
  • Camshaft Position Sensor
  • Engine Coolant Temperature Sensor
  • Engine Knock Sensor
  • Spark plugs
  • Fuel Injectors

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 Most other suppliers of turn-key engine packages will use out-of-date MEFI ECM’s and harnesses that do NOT allow the engine to make fueling or timing changes when running, nor will they allow for any needed changes with varying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

Contact:

733 North Drive
Suite B
Melbourne, FL 32934
PH: 800-267-3940
Info@proformanceunlimited.com

Shop Hours:

Mon–Thur 8am – 5pm EST
Friday 8am – 4pm EST
Walk-in’s welcome please call for appointment

PROFORMANCE UNLIMITED INC. RESERVES THE RIGHT TO MAKE CHANGES IN DESIGN OR TO MAKE ADDITIONS TO OR IMPROVEMENTS UPON ANY OF ITS PRODUCTS AT ANY TIME WITHOUT INCURRING ANY OBLIGATION WHATSOEVER TO INSTALL THE SAME OR IMPROVEMENT UPON PRODUCTS PREVIOUSLY MANUFACTURED. OCCASIONALLY DEPENDING ON AVAILABILITY, PARTS MAY BE SUBSTITUTED THAT WILL NOT EFFECT PRICE, PERFORMANCE, APPEARANCE OR QUALITY OF THE PRODUCT.
*Engine shown with optional upgrades