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BP Crate Engine 406-501 cu. in. Long Block


  • Customized Butler Performance Engine
  • Option to send us your block
  • Choose Bore Size, Stroke, Crank, & Rod
  • Choose 3.750" to 4.500" Stroke
  • Create a custom package tailored to you
  • All engines undergo the "Butler Process"

Please Call for Availability


BP Crate Engine
406-474 cu. in. 
as seen on OverHaulin'

We can do this engine using any of the rotating assembly combinations from our assembly list

  • Performance prepped 400/ 428 /455 block -Bead Blasted and Magnafluxed, Sonic Tested, Completely Deburred, Bored and Honed with Torque Plate - Line Honed with ARP Main Studs, Deck Squared, Painted, Cam Bearings, and Brass Freeze Plugs Installed.
  • Crank 3.750 to 4.500 Stroke - Cast or Forged
  • Eagle 6.625-6.800" Rods w/ ARP Bolts 8740
  • Butler / Ross Pistons
  • Pins .990 x 2.500"
  • Total Seal Classic Race Rings
  • Main & Rod Race Bearing- Federal Mogul or Clevite
  • Complete Gasket Set w/ Rear Main Seal
  • JPP Billet Gear Timing Chain
  • Comp Cams Hydraulic Cam & Lifters
  • Roller Tip Rockers
  • Canton Oil Pan
  • Melling Oil Pump w/ Pickup
  • HD Oil Pump Drive Shaft
  • Powerbond Balancer
  • Timing Cover, Water Pump, Plate & Sleeves
  • Ported Cast Iron Heads w/ Ferrea Valves, Bronze Guides, Valve Job, Springs, Locks, Retainers & Studs (Edelbrock Heads optional)
  • ARP Head Bolts
  • Performer RPM or Torker II Intake
  • Stainless Steel Bolt Kit
  • Chromemoly Push Rods
  • Aluminum Valley Pan
  • Chrome Valve Covers
  • Oil Filter Housing
  • Dipstick & Tubes
  • Cam/Crank Bolts/Washer / Thrust Plate & Ecc
  • Oil, Filter & Spark Plugs
  • Internally Balanced
  • Assembled With Blueprint Sheet
BP Crate Engine w/ Cast Crank (Long Block)
BP Crate Engine w/ 4340 Forged Crank (Long Block)

The above engine can be upgraded with the parts listed below:

BP Crate Engine Upgrade

Carb – Holley / Demon / Edel

BP Crate Engine Upgrade

Distributor and Wires

BP Crate Engine Upgrade

Electronic Fuel Injection

BP Crate Engine Upgrade

Run and Break-in on Test Stand

BP Crate Engine Upgrade

Dyno and Tune

BP Crate Engine Upgrade

March Serpentine Pulleys and Accessories

BP Crate Engine Upgrade

Edelbrock Heads

BP Crate Engine Upgrade

4-Bolt Mains

BP Crate Engine Upgrade

Victor Intake

BP Crate Engine Upgrade

Full Roller Rockers

BP Crate Engine Upgrade

Race Pan/Pick-Up

BP Crate Engine Upgrade

Solid Roller Lifters

BP Crate Engine Upgrade

Hyd. Roller Upgrade

BP Crate Engine Upgrade

BP Aluminum Valve Covers

Below taken from Street Rodder Magazine- Click here to view article

Butler Performance 
There are plenty of rodders who would like to run a Pontiac V-8. Butler Performance is a proven Pontiac expert throughout the broad range of Pontiac powerplants. The company builds stock to rare factory engines, including the 389 Tri-power, SD421, RAII, RAIII, RAIV, HO455, SD455, and RAV. Additionally, Butler can internally modify any of these engines to include strokers, head porting, and much, much more. Once finished, the Butler Pontiac engines feature greatly improved power and durability while maintaining a totally stock appearance. But it doesn't stop there. The company can install the latest aftermarket accessories, such as custom valve covers, a myriad of induction systems from single four-barrel to supercharged, in addition to serpentine belt systems, air conditioning, power steering, and alternator brackets and components. Butler's crate engines start at 500 hp and 550 lb-ft of torque and will do so on 91 octane. Now that's a real street motor! According to Butler Performance, you're just a cam and induction upgrade away from the 600-plus-horsepower and torque range. These are based on Pontiac 400 or 455 blocks and use the company's long rod stroker kits and ported Edelbrock heads. Additionally, the Butler crate engines using aftermarket blocks (505 to 541 inches) feature larger bores (4.380 inches) made possible by the thicker-than-stock cylinder wall. These engines can produce upward of 700 to 750-plus horsepower on pump gas. Butler offers everything from street to race motors, carb to fuel injection-it is really a matter of your personal taste for performance. 
Butler Performance 

Images show with optional parts. Contact us for detailed quote for your application and specifications.


  • BP-Crate-406-501-LB
  • BP-Crate-406-501-LB
  • Butler Performance
  • New

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Customer Reviews

Comment Total Reviews (3)

Long block
  • Currently 4/5 Stars

Reviewed by: Julio04/10/2017 10:36PM

Product ownership: I do not own this product

Not purchased from: Butler Performance Inc.

Photos look amazing. Love to drop this in my firebird! Would need a price. Or price to build my engine. Like this one

494 street motor!
  • Currently 5/5 Stars

Reviewed by: john08/02/2017 12:46PM

Product ownership: Less than 1 year

Purchased from: Butler Performance Inc.

I cant find the words to tell you how happy I am with my butler performance pump gas 494 cid. I have it in a 64 gto that weighs 3,880 with me in it and runs 7.30s at 93 mph in the eight mile. effortlessly!

500 HP
  • Currently 5/5 Stars

Reviewed by: Shane10/28/2017 04:13PM

Product ownership: A year or longer

Purchased from: Butler Performance Inc.

We have 20 hot Hod most pontiacs and we Have a 1972 Firebird formula 400 We have been Street Racing it for over 8 years and Very Rarely get beat. Makes 479 To the Wheels and Runs 11.14 All Motor
In Denver at 5280 Feet
Never Rebuilt Change the oil and plugs never let us Down!
This is the Best money you can spend!!!!
If you Love Pontiac and want to beat every thing you can this is the way to go!!
Thanks to the Butler Family for making me the Big Chief in my town

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