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Built With Reliability In Mind

455 Pontiac

475 Horse Power

 

Pontiac 455 with 475 HP engine package with Edelbrock aluminum cylinder heads can be custom designed to meet 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.

 

Great For Muscle Car With Attitude

Very Dependable Week End Warrior

 

455 Stroker 475HP Engine Live Run  

Check Out What Our Customers Think Of Our Engines

 

See Below How Our Engines Out Beat Our Competitors 

 

Engine Specification Sheet

  • A 455 Pontiac block

  • Block will be bored and plate honed accordingly "painted color of choice"

  • All new cam bearings, freeze plugs and oil galley plugs

  • Precision ground cast iron crankshaft assembled  w/tri metal cleveite 77 rod and main bearings

  • Set of shot peened stress relived  I-beam connecting rods w/ARP rod bolts

  • New set of high performance pistons

  • Assembled with a set of hand filled performance rings

  • New three piece true double roller timing set

  • Hand selected performance camshaft to achieve the idle & throttle response to customers desire

  • (16) New high rev lifters (anti-pump up)

  • A Set Of Edelbrock Aluminum Cylinder Heads With 2.11 Intake And 1.66 Exhaust Valves

  • (16) Chrome moly push rods

  • (16) Scorpion aluminum roller rockers w/1.65 ratio (with all new rocker balls and nuts)

  • All new ARP head bolts

  • Engine will be assembled with all new bolts

  • High volume oil pump and screen

  • New chrome oil pan

  • New chrome dip stick and tube

  • New timing cover

  • A reclaimed valley pan

  • Professional Products performance balancer

  • Fel-pro performance gaskets

  • The complete rotating assembly will be balanced

  • Edelbrock Performer RPM intake manifold (different intake manifolds can be used at customers request)  

  • New chrome thermostat housing

  • Edelbrock carburetor w/ electric choke 

  • New chrome air cleaner

  • MSD Pro-Billet distributor

  • MSD Blaster II coil and bracket

  • MSD 6AL ignition control

  • (8) AC Delco spark plugs

  • Custom fit Taylor 8mm ignition wires (color of choice black, red, blue, yellow, green, orange no extra charge)

  • New high flow cast iron water pump

  • New set of chrome valve covers

  • New chrome breather

  • Fel-Pro Performance Gaskets

  • Flex plate (for auto transmission)

  • Engines are photo documented during 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 live run engine and send you a copy

 

 

Upgrade To A March Serpentine Belt Systems Below

March Performance

Alt, & PS Serpentine Kit

Add $1,430  To Base Price

March Performance

Alt, PS, & AC Serpentine Kit

Add $1,870 To Base Price

                     

 

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

1-800-267-3940

 

 

 

Copyright 2006 Pro-formance Unlimited Inc.

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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.