426 HEMI Stroker 6.1L Short Block

This is our modern twist on the classic 426 that dominated NASCAR and the road in the muscle era. 585 HP with 560 Ft-lbs. of Torque. 30 % Increase in Torque and Power over the stock 6.1 HEMI at 160 mph. Both while maintaining a smooth ride! We have installed this engine in a Chrysler 300C and run it as an everyday car. The engine is comfortable and quiet with normal use, but ready to jump out of any stoplight and tear up the middle lane. "The drive ability is amazing".

We have also run it at NASCAR's Martinsville Speedway here, and the Lowe's Motor Speedway in Charlotte to test it under more extreme conditions with great success. This engine is truly a great combination of power, performance and comfort.

• Bore:4.080
• Stroke:4.080
• CH:1.065
• Target Compression:10.3 - 1 / 8.8 - 1
• Short Block Compression:10.3 - 1 / 8.8 - 1
• Achieved In Short block:Yes

• K1 or Manley – Arrington 4.080 w/4340- Forged Steel Crankshaft.
• Mahle Nascar Grade 2618 Forged Aluminum Pistons
• Total Seal Nascar Grade Steel Piston Rings
• K-1 Forged H Beam Bushed Connecting Rods w/ARP 2000 Rod Bolts
• Wrist Pin & Locks
• ARP Head Studs (optional)
• ARP Main Studs
• Billet Main Bearing Caps (optional)
• Cleveite H Type Main and Rod Bearings
• Cleveite Cam Bearings (If Required)
• Mopar Performance Block Plugs
• Gun Shot Paint - Choice of Colors
• Miscellaneous Parts (missing plugs, clips, etc…)

• Receiving Inspection
• Dissemble Core (If Required)
• Hot tank block & remove all liquid contaminants
• As Received Measurements
• Sonic Check Cylinder Bores
• Clean Oil Galleys
• Bore Scope Cavities (If Required)
• Hand Chase Threads (If Required)

• Validate Deck Surface
• Validate Bore Centerlines
• Bore Cylinders
• Hone Cylinders w/Honing Plate
• Install Billet Main Caps (optional)
• Line Hone (If required)
• Hand Clearance for Stroker Kit
• Balance Rotating Assembly (we do not depend on factory balance)
• Remove all flashing
• chafer all 90° corners
• Radius bottom of all cylinder bores
• Other proprietary block operations.

• Install Cam Bearings (If Required)
• NASCAR Grade Block Finish.
• Engineered High RPM Oil System:
  • Maintain .0625" chamfer radius throughout oil system.
  • Other proprietary oil system operations.
• NASCAR Grade Rotating Assembly Setup:
  • Micro-polish all bearing surfaces (including wrist pins).
  • Micrometer measurement of all bearing surfaces
  • Hand match individual bearings to journals maintaining .0001" tolerance to specified clearances.
  • Other proprietary rotating assembly operations.