17B Jackson Street

Freehold, NJ 07728


347 Ford Stroker

With PowerJection III Fuel Injection System

425 Horse Power

Toll Free: 1-800-267-3940


This is a small block 5.0L 302 Ford crate engine with Aluminum heads. The 347 425 HP engine package can be custom designed to tailor to your specific needs. All engines can be custom painted to match your vehicle at your request. We can outfit your engine with the exclusive March Performance serpentine belt system.  We can also assist you in choosing the proper transmission and stall speed converter combination for your vehicle and have it shipped directly to you as your performance crate engine is being built.

See Below How Our Engines Out Beat Our Competitors

Engine Specification Sheet

  • Seasoned 302 Block
  • Bored And Honed With Deck Plate
  • Mains Have Been Align Honed
  • Block Has Been Decked
  • Dura Bond Cam Bearings Installed
  • Brass Freeze Plug And Oil Galley Kit Installed
  • Block painted with 3 coats of high temp ceramic engine paint customers choice of color (have your engine custom painted to match your vehicle for an additional $250)
  • New Eagle Cast Steel Stroker Crankshaft
  • New Eagle I-Beam Connecting Rods With ARP Bolts And Bushed Pins
  • Keith Black Pistons
  • Clevite P Series Rod And Main Bearing
  • Performance Rings Hand Filed To Match Application
  • New ARP Main Bolts
  • The complete rotating assembly will be balanced
  • Custom Ground Hydraulic Roller High Performance Street Camshaft With A Muscle Car Chop
  • A Set Of Roller lifters
  • A Set Of Lifter Guides
  • A Ford Racing Roller Lifter Retainer Tray
  • Performance Aluminum cylinder heads With 200cc Intake Runners
  • A Set Of Stainless Steel 2.02 Intake Valves
  • A Set Of Stainless Steel 1.60 Exhaust Valves
  • A Set Of High Performance Valve Springs And Retainers (To Match Camshaft)
  • 7/16 Screw In Studs And Hardened Guide Plates
  • All New ARP Head Bolts
  • Chrome Moly Push Rods
  • A Set Of 1.6 Ratio True Aluminum Roller Rockers
  • Melling High Volume Oil Pump
  • Chrome front sump oil pan and dip stick
  • Timing Cover With Scale
  • Engine Will Be Assembled With All New Bolts
  • Fel-Pro performance gaskets
  • Aluminum Performance Intake Manifold
  • Chrome Thermostat Housing To Match Intake
  • PowerJection III Kit Includes:
  • 750 CFM Throttle Body Assembly (An exact swap for a 4150 Holley)
  • (4) 62 lb./hr. port style injectors
  • Built in EMS (Engine Management System) Mounted on the throttle body
  • Dashboard Software CD with comprehensive Instruction Manual
  • All harnesses and connectors (Much less harnessing than other systems)
  • Idle Air Control - Built in to the throttle body
  • Coolant Temperature Sensor - 3/8-NPT threads for most manifolds
  • Throttle Position Sensor
  • Wideband O2 Sensor and cable (Many competitive units are narrowband)
  • 14" Chrome Air Cleaner
  • MSD Pro-billet distributor (Requires MSD 6AL ignition control)
  • MSD Blaster II Coil
  • MSD Coil Bracket
  • (8) AC Delco Spark Plugs
  • A Set Of Custom Fit Taylor 8mm Ignition Wires (Color Of Choice Black, Red, Blue, Yellow, Green, Orange No Extra Charge)
  • A High Flow Water Pump
  • Chrome Valve Covers With Baffles
  • Professional Products Performance Balancer
  • Engines will come with flex plate (for auto trans)
  • As we assemble your engine we take several pictures throughout the building process so you can see the quality of parts and workmanship that goes into your engine
  •  Each engine is live run tested, timing set and carburetor adjusted for optimum performance
  • We video tape your engine live run and send you a copy
  • All of our turnkey engines come with a 2 year unlimited mileage warranty

Turn- Key Drop In Ready Price Only $Call For Pricing 




Upgrade To A March Serpentine Belt Systems Below

March Performance
Upgrade $950 Upgrade $1,550 Upgrade $1,950

Cobra Engine Package 

Cobra Engine Package Upgrade Kit:

  • Cobra Valve Covers
  • Cobra Air Cleaner
  • March Alternator Only Pulley Kit:
    • Polished Aluminum Alternator Bracket
    • Polished Aluminum Alt, Crank, & Water Pump 6 Grove Serpentine Pulleys 1 Wire
    • Alternator
  • Serpentine Belt
  • Manual Transmission Flywheel 157 or 164 Tooth

Add $1,440 

Custom Paint

Custom Painted Engine:

  • Have a custom painted car?  Why not have a custom painted engine?  Give us your paint code and we'll do the rest.

Add $250

TH350 Transmission

Automatic Transmission Package's:

  • The world’s finest transmission packages, custom made for Proformance Unlimited.
    -Each Transmission Package is tailored to your engine, and Test Driven to ensure maximum performance.
    -They build them from Mild to Wild, if you’ve got the horsepower, they have the transmission.

C4 Or C6 Add $1,800

AOD Add $2,650


Whether your vehicle is a hot rod, street car, race car, or even a tow truck, here at Pro-formance Unlimited we are here to help design and build the combination that best suits your vehicles needs. Please browse our engine combinations listed below or custom design one of your own. Pro-formance Unlimited is best known for our precision custom designs. From that special built stroker engine to that turn-key drop in ready crate engines, call Doug or Steve we will be happy to answer any of your questions.

All engines are custom built to order for total customer satisfaction

Credit cards accepted

Call us today for a quote


425HP Short Block


425HP Long Block

Updated 5/3/2011

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