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Arrington 448 Long Block

Stock
MSRP:$11,999.00
SKU:API-HLB448BA
Dimensions:42 x 42 x 48
Weight:550.0 lbs
Arrington Performance
Price: $9,999.99
Quantity:
For dedicated naturally-aspirated car fans, the Arrington 448 HEMI Stroker long block gives you our BIGGEST standard upgrade to the factory block. Based on the Chrysler 6.4L HEMI block, all of the moving parts are upgraded and forged to create a high-performance platform that is our largest displacement that comes with a warranty.  

Starting with our 448 short block, we add our custom-engineered high performance cam package and our proprietary ported head and valve package with performance springs and lifters.

Core charges for both the block and heads apply if you are not providing them for upgrade.

3 yr / 36,000 mile warranty

Not recommended and not warranted for forced induction (boosted) applications.


 

Arrington 448 Stroker from Chrysler 6.4L Block

  • 448 Cubic Inch Displacement
  • Bore: 4.095
  • Stroke: 4.250
  •  630 Crank HP (rated)
  • Target Compression Ratio: 11.0 : 1
  • 3 yr. / 36,000 mile warranty

Short block components:

  • Manley – 4340 Forged Steel Crankshaft
  • Manley – H Beam 4340 Forged Steel Connecting Rods with ARP 2000 Rod Bolts
  • Mahle -- Forged Aluminum Pistons (Arrington spec)
  • High Performance Piston Rings
  • ARP Main Studs
  • Billet Main Bearing Caps (optional)
  • Clevite H Type Main and Rod Bearings

Block inspection and prep:

  • Hot Tank Clean the Block (remove all liquid and contaminants from block & oil galleys)
  • Sonic Check Cylinder Bores
  • Measurement Verifications
  • Borescope Cavities (if required)
  • Validate Deck Surface
  • Validate Bore Centerlines
  • Hone Cylinders w/Honing Plate
  • Line Hone
  • Hand Chase Threads (if required)

Attention to detail:

  • Rotating Assembly
    • Balance Rotating Assembly (we do not depend on factory balance)
    • Micrometer Measurement Of All Bearing Surfaces
    • Hand Match Individual Bearings To Journals For Maximum Tolerances
    • Micro-polish All Bearing Surfaces (including wrist pins)
    • Hand Clearance for Stroker Kit
  • Block
    • Remove All Flashing (chamfer all 90° corners)
    • Radius Bottom Of All Cylinder Bores
    • Arrington-developed Oil System Prep
    • Other Proprietary Block Operations

Longblock:

  • ARP Head Studs
  • Arrington Custom-ported Heads With Valve Matching
  • Melling High Performance Oil Pump
  • Camshaft and Chromoly Pushrods (Arrington spec)
  • Cometic Head Gaskets
  • Mopar OEM non-MDS Lifters
 
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