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HPE-SP57 - ATK SP57 Chrysler 408CI Magnum Short Block -20.5cc Dish Pistons Forged Crank Kit

This product may require vehicle validation(s) for proper fitment. Please contact us to confirm correct vehicle fitment and usage.

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Pricing: $3,195.00

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This short block is designed to be a strong foundation for high horsepower street/ strip engine builds. Your engine may not necessarily come with all components listed, but they are listed as our recommendations of parts to run for optimal performance.

Block: Seasoned OE Magnum
Bore/Stroke: 4.040 x 4.000
Displacement: 408 C.I.D.
Crankshaft: Scat 4340 Forged 4.000" Stroke Internally Balanced
Connecting Rods: Scat 4340 Forged I Beam 6.123" ARP 8740 Bolts
Pistons: Forged Dished +20.50cc
Piston Rings: Moly Rings
Compression Ratio: 62cc=10.2:1/68cc=9.6:1/72cc=9.3:1
Camshaft Bearings: Installed & Clocked to OEM Position
Freeze Plugs: Brass Installed & Sealed
Oil Galley Plugs: Installed & Sealed

Oil : 10W30
Harmonic Balancer/Damper : Internally Balanced (not included)
Flex Plate / Flywheel : Internally Balanced (not included)

Application List


Shipping Information

  • Item Requires Shipping
  • 500.0 lbs.
  • W5.0000” x H5.0000” x L5.0000”
  • Free Shipping!
  • FREE 48 State Truck Freight Shipping (International shipping will require freight quote)

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