ATK Ford 408 Stroker Engine 480HP Base HP81

$8,300.99

SKU: 69121 Category:

Features & Compatibility

The ATK HP81 Ford 408 Stroker Engine is a highly reliable mill that easily meets your power demands. It uses aluminum cylinder heads for improved performance and the forged components offer high endurance and wear. This crate engine has installed and sealed freeze plugs and oil galley plugs to prevent the risk of leaks.

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Engine Specifications:

  • Horsepower: 480
  • Torque: 500 lb/ft
  • Block: Seasoned OE 351W Roller Block
  • Bore/Stroke: 4.040 x 4.000
  • Displacement: 408 C.I.D.
  • Crankshaft: Scat 4340 Forged 4.000″ Stroke 1 Piece Internally Balanced
  • Connecting Rods: Scat 4340 Forged H Beam 6.200″ ARP 8740 Bolts
  • Pistons: Forged Dish W Valve Reliefs
  • Piston Rings: Moly Rings
  • Compression Ratio: 10.0:1 Compression
  • Camshaft: Hydraulic Roller
  • Camshaft Specifications: 235/238 @050 .573in/.582ex 112LSA
  • Camshaft Bearings: Installed & Clocked to OEM Position
  • Cylinder Heads: Dart Pro 1 Aluminum 58cc/195cc 2.02/1.60
  • Freeze Plugs: Brass Installed & Sealed
  • Rocker Arms: Billet Aluminum 1.6 Full Roller
  • Oil Galley Plugs: Installed & Sealed
  • Oil Pan: Moroso 7qt. Front Sump
  • Weight:350

ATK specializes in muscle. With the highest quality internal parts and Dyno Proven combinations of every engine built, ATK is able to add the most bang for your buck and back it up with an industry leading warranty.

Don’t forget the engine paint!
Engine Paint

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Warranty

Click Here for Warranty Information

Specifications

Engine Information:

• Oil: 10W30
• Oil Filter: Wix or K&N Recommended Per Your Application
• Fuel Delivery: Quick Fuel Carburetor 780cfm #HR-780-VS
• Intake Manifold: Edelbrock Performer RPM Air-Gap Dual Plane #7581
• Spark Plugs: Autolite #3923
• Spark Plug Gap: .035″
• Harmonic Balancer/Damper: Professional Products Internally Balanced Weight Must Be Removed #80006
• Flex Plate / Flywheel: Internally Balanced 164 Tooth
• Timing: 34-36 Degrees Total
• Water Pump: Standard Rotation Right Hand Inlet
• Firing Order: 1 3 7 2 6 5 4 8
• Exhuast: 1 3/4 Headers
• Fuel Pump: Holley 110GPH Mechanical #12-289-11
• Fuel: 91+ Octane
• Ignition: Pro Billet with Melonized gear
• Automatic Transmission Stall Converter: 2500-3200

Shipping & Handling

Shipping is free and lift gate will be provided.