*Shown With Optional Upgrades

400 Pontiac Crate Engine With 450HP

Estimated Cost $17,695.00

If you like Pontiac’s the 400 engine bock is the way to go. This is one of Doug’s favorite builds. No stock rods in this engine we use only Eagle connecting rods. For a built proof bottom end, we also use a 1 pc rear main seal no oil leaks here. Give Steve a call and he will be happy to help design something just for you 800-267-3940. Also, check out our Facebook page @customcrateengines

  • Seasoned 400 Pontiac Block
  • Bored and honed with deck plate
  • Mains have been align honed
  • Block has been decked
  • Dura Bond cam bearings
  • Brass freeze plug and oil galley kit
  • Main bolts (ARP)
  • Block painted with 3 coats of high temp ceramic engine paint customer’s choice of color
  • Steel crankshaft (Eagle)
  • Performance rod and main bearing (Clevite, King or Federal Mogul)
  • I-Beam connecting rods with ARP bolts (Eagle)
  • Forged performance pistons (Speed-Pro, Keith Black, SRP, or Mahle)
  • Performance rings hand filed to match application
  • Complete rotating assembly will be balanced
  • New three piece true double roller timing set
  • Custom ground hydraulic roller performance camshaft
  • Tie-bar Hydraulic roller lifters (Comp Cams)
  • Performance aluminum cylinder heads (Edelbrock)
  • Performance valve springs and retainers
  • 7/16 screw in studs and hardened guide plates
  • Head bolts (ARP)
  • One piece chromoly push rods
  • Performance roller rockers
  • Engine will be assembled with all new bolts
  • High volume oil pump and screen
  • Oil pan
  • Dip stick and tube
  • Timing cover
  • Valley pan
  • Performance balancer
  • Performance aluminum intake manifold (Edelbrock)
  • Chrome thermostat housing
  • Holley Sniper II throttle body fuel injection
  • Hyper Spark Pro-Billet distributor
  • MSD Blaster II coil and bracket
  • Spark plugs
  • 8mm ignition wires
  • High flow water pump
  • Valve covers
  • Chrome breather
  • Fel-Pro Performance Gaskets
  • Engines are photo documented during the building process so you can see the quality of parts and workmanship that goes into your engine
  • Engine will be hot run tested – Base tune loaded
  • 1 Year Unlimited Millage Warranty

When you purchase one of our Pontiac engines you are buying the finest turn-key drop in ready crate engine combinations in the world. Some of our popular engine combinations like our 350,400,455 and world renowned strokers like the 461 are best used for street/strip hot rods. All of our turn-key drop in ready packages can also be designed to accommodate high torque truck applications. When building a Pontiac big block engines the target is “bigger is better”

With all the after market parts made readily available today, we can custom design your crate engine to deliver extremely powerful street performance or off road track use. All our engines are built with precision to perform with quality and assurance you can depend on.

Proformance Unlimited we are here to help design and build the combination that best suits your knowledge level and over all experience, so your vehicle will out perform your expectations. Please browse our engine combinations listed below. Proformance Unlimited is best known for our precision custom designs. If you have any questions and would like Proformance Unlimited to build your next engine feel free to call Doug or Steve.