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454 Big Block Chevy Crate Engine With 550 HP
High Horse Power Very Streetable Road King
454 550HP Big Block Chevy Crate Engine 

 

Big block Chevy 454 with 550 Hp performance aluminum head engine combination 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.


Short Block Assembly:
  • Fully machined seasoned Gen VI 454 4 bolt main Chevy block
  • Block painted with 3 coats of high temp ceramic engine paint customers choice of color (have your engine custom paint454 Short Blocked to match your vehicle for an additional $300)
  • Eagle cast steel crankshaft
  • Eagle I-Beam connecting rods with ARP bolts
  • High performance pistons (Speed-Pro, Keith Black, SRP, or Mahle)
  • Clevite P Series rod and main bearing
  • Performance rings hand filed to match application
  • ARP main bolts
  • Rotating assembly is balanced
Fully Dressed Crate Engine Assembly:
  • All The Above Plus The Following:
  • Comp Cams custom roller performance camshaft454 Chevy Short Block 2
  • Roller lifters
  • Three piece double roller timing set
  • Edelbrock aluminum performance cylinder heads
  • 7/16 Screw in studs and hardened guide plates
  • Manley chrome moly push rods
  • Performance roller rockers
  • Melling high volume oil pump and screen
  • Painted oil pan
  • Dipstick and tube
  • GM aluminum timing cover
  • Performance balancer
  • Fel-Pro gaskets
  • Edelbrock Air-Gap intake manifold454 Chevy Long Block
  • Chrome thermostat housing
  • Edelbrock carburetor w/ electric choke
  • Chrome air cleaner
  • MSD Pro-Billet distributor (requires MSD 6AL ignition control)
  • Auto-Lite spark plugs
  • Taylor 8mm ignition wires (Color Of Choice Black, Red, Blue, Yellow, Green, Orange No Extra Charge)
  • Water pump
  • Chrome valve covers
  • Chrome breather
  • Flex plate (for auto trans)
  • Engines are photo documented during the building process
  • Each engine is dyno tested, timing set and carburetor adjusted for optimum performance
  • We video tape your live run engine and send you a copy
  • All of our turnkey engines come with a 2 year unlimited mileage warranty

Only $10,100

 

We Are Constantly Running Engine Deals

Please Call Us For The Most Up To Date Pricing

Or E-Mail Us For More Information!

         

 

Customize Your Crate Engine

March Performance
Alternator
Turn-Key Drop In Rady Small Block Chevy 350 420HP With March ALT Pulley Kit		 Alternator, Power Steering
 Alternator, Power Steering,  And AC
Upgrade $950 Upgrade $1,550 Upgrade $1,950
     

Holley Carburetor
(Includes braided fuel line for carburetor)
Holley
 Add $350		 MSD Mini High Torque Starter

Add $245
   
MSD 6AL Ignition Control
MSD 6AL 6420
Add $245		 Manual Flywheel
Flywheel
Add $375
   




The Powerjection III is an amazing accomplishment in engineering. It is by far the simplest and cleanest aftermarket EFI system available. Which also means it is the easiest to install and tune. The “Adaptive Learning” feature eliminates the necessity for laptop programming and tuning, except on the most radical engines.


Powerjection III EFI System

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)

Add $2,100

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 $300

Webber 48mm Stack Induction

Webber Stack Induction:

  • Webber Stack Induction Aluminum Intake Manifold
  • Webber 48mm IDA Carburetors
  • Chrome Stacks
  • Webber Carburetor Fuel Line
  • Webber Carburetor Throttle Linkage

Add $ Call

Chevy 350-475hp

Edelbrock Dual Quad's:

  • Performer RPM Dual Quad Air-Gap intake With EnduraShine Finish
  • 2 Thunder Series AVS carburetors With EnduraShine Finish
  • Progressive throttle linkage
  • Fuel line
  • Edelbrock Chrome Dual Carburetor Air Cleaner

Add $1,300

Chevy Black Out Kit

Old School Look:

  • One of the most popular and durable dress-up kits available today! This black crinkle kit with its distinctive look and boldly striking wording comes with everything you need for race day or show day!

Add $225

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.

TH-350 Or TH-400 Add $1,800

700R4 Or 200R4 Add $2,650





Whether your vehicle is a hot rod, street car, race car, or even a tow truck, here at Proformance 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. Proformance 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 and 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

1-732-462-7283 

550HP Short Block

  

550HP Long Block

10100   Updated 1/19/2012

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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.