Arrington 426 Short Block

Starting with this 426 short block, this customizable HEMI can be modified to come alive. By adding our custom engineered high performance cam package and our proprietary ported head package, a supercharger, increased throttle body size, cold air intake and/or long tube headers -- there is a combination that delivers the power you crave.

• 426 Cubic Inch Displacement
• Bore: 4.095
• Stroke: 4.050
•  600 Crank HP (rated)
• Target Compression Ratio (low):  9.5 : 1
• Target Compression Ratio (high): 11.0 : 1

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 Boost Upgrade Available)
• 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