505ci Mopar RB Street Short Block

505ci Mopar RB Street Short Block

One of the best assembled Mopar RB over 500ci short blocks you can buy. With 4340 crank and rods, along with forged Racing Pistons and a completely CNC race prepped block, you will not be disappointed. Most blocks are left to a 4.350 final bore size for stability and long term freshen ups later in the future.



  • 440ci Fully CNC Race Prepped 10.725 RB Block
  • 12 Point Head Stud or Bolt Kit Plate Honed with Block (either)
  • Brass or Stainless Steel Freeze Plug Kit Installed
  • Eagle 4¼ Stroke Internally Balanced 4340 Steel Crank
  • Eagle H-Beam 7.1″ Rods and 7/16 ARP Bolts
  • Cam, Main and Rod Bearings
  • Mahle Forged 8.0cc Dish Severe Duty Pistons
  • Mahle 1/16/16 3/16 Plasma Moly Rings
  • Rear Main Seal is Installed
  • Fully CNC Race Prepped Block to Perfection to 4.347 to .4.377 Bore Size
  • The Block Decked to 10.710 & Plate Honed to 4.35 or 4.38 Final Bore Size
  • Hot Wash, Brush Block, Install New Main Oil Galley Plugs
  • We Install New Cam Bearings, Main Bearings and Rod Bearings
  • Brass or Stainless Steel Freeze Plugs are Installed for Life Time Service
  • We Record the Rod Bolt Stretch, Re-Stretch to the Rod Bolt Specifications
  • Touch up any Rods not Perfect, Balance Big and Small Ends to Perfection
  • We Internally Balanced the Complete Assembly to .3 oz in Specification
  • File Fit Rings, Assemble Short Block, Stretch Rod Bolts to Specifications

Available Upgrades

535ci Rotator with 4.500″ Stroke Crank; (Will Require Milodon Pan Pick up Style Oiling System + $599)
+ $ 299.00
ARP Main Stud Kit Installed
+ $ 95.00
ARP 2000 Rod Bolts
+ $ 99.00
Hydraulic Cam, Lifter and Timing Set Installed
+ $ 395.00
Comp or Erson Hydraulic Roller Cam, Lifter and Billet Roller Timing Set with Bushing or Torrington Bearing Kit Installed, Degree Camshaft to Specifications
+ $ 895.00

This Short Block Kit is for a Street Car, Truck, Drag or Marine Application

Shipping Short Block will be per Zip Code and State you need it Shipped to.

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