ATK HP21 Ford 408 Stroker Base Engine 430HP

Item #22577 Brand:ATK Engines

Made in the USA
ATK HP21 Ford 408 Stroker Base Engine 430HP
ATK Ford 408 Stroker Base Engine
* ** THIS ITEM IS TEMPORARILY OUT OF STOCK *** FREE SHIPPING on ATK Engines. This item ships directly from the manufacturer and is not available for store pickup. Some engines are made-to-order or can be backordered. Delivery can be delayed up to 5 to 6 weeks but typically ship within 2 weeks.
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The ATK Ford Stroker Engine is perfect for anyone, who wants to build a powerful automobile on their own with no fuss and hassle. This engine comes with various essential parts, so you don’t have to shop around much to run it. This ATK Ford Stroker base engine consists of internally balanced crankshaft, hydraulic roller camshaft, billet aluminum rocker arms, connecting rods and oil pan.

Engine Specifications:

  • Horsepower:430
  • Torque:500 lb/ft
  • Block:Seasoned OE Roller Block
  • Bore/Stroke:4.040 x 4.000
  • Displacement:408 C.I.D.
  • Crankshaft:Scat Nodular Iron 4.000" Stroke 1 Piece Internally Balanced
  • Connecting Rods:Scat 4340 Forged I 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:220/224 @050 .512in/.512ex 112LSA
  • Camshaft Bearings:Installed & Clocked to OEM Position
  • Cylinder Heads:Dart Pro 1 aluminum 58cc/170cc 2.02/1.60
  • Freeze Plugs:Brass Installed & Sealed
  • Rocker Arms:Billet Aluminum 1.6 Full Roller
  • Oil Galley Plugs:Installed & Sealed
  • Oil Pan:OE 5qt. 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. Check out our three stages of performance Ford Engines: they are separated by level of dress.


ATK Ford 408 Stroker Engine 430HP Base HP21


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 Dual Plane #7181
• 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 Degreesl
• Water Pump: Standard Rotation Right Hand Inlet
• Firing Order: 1 3 7 2 6 5 4 8
• Exhuast: 1 5/8 Headers
• Fuel Pump: Holley 110GPH Mechanical #12-289-11
• Fuel: 91+ Octane
• Ignition: Pro Billet with Melonized gear
• Automatic Transmission Stall Converter: 2000-2500

Disclaimer: The parts listed are ATK’s recommendations of parts to be used to obtain our power figures listed. Power figures can vary based on parts used by the end user. It is the customer’s responsibility to verify components will work for their application. Some modifications to the vehicle may be required using these and or other aftermarket parts.

Shipping Information

Shipping is free and lift gate will be provided.

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