Description

  • Unable to Redeem Reward Points on ALL IAG Products (If attempted to use, the order will be cancelled)
    *** Made to Order ***
    Proposition 65: P65 WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov.
  • Using the same world-leading technology found in Willall’s incredible billet GT-R block, the billet EJ case seeks to change the Subaru performance tuning market by reinventing the EJ and addressing virtually every weakness that exists in max-power builds. The Stage “X” Block is a complete short block built on the Willall billet platform, which also includes pistons, rods, bearings, crank, bore/hone, case bolts, line hone, and final assembly and blueprinting.
    • Stage X Billet EJ25 Case Features:
      • Machined from solid billet 6061-T6 Aerospace grade aluminum
      • Darton Ductile iron sleeves
      • Increased material thickness in all known weak points (around head studs, bottom end location)
      • Unique 4 bolt bottom end strengthening
      • Threads are rolled into the block rather than conventionally cut for much greater strength
      • Full cooling system operation
      • Radiused coolant and oil galleries for improved flow and less foaming/turbulence
      • Fits all factory engine bay ancillaries (i.e. AC/PS/etc.)
      • Multiple Times stiffer and stronger than the stock case
      • Precision machined for a superior surface finish
      • Hard anodized to avoid marking or straining
    • IAG Stage X Complete Shortblock Includes:
      • Case –WREJBB Billet / Sleeved Case Halves
      • Fire-Lock –IAG Fire-Lock receiver groove machining, latest solution to prevent head gasket failure on high horsepower and high boost Subaru’s – *IAG Fire-Lock head gaskets required
      • Machining –Machined for 14mm Head Studs *(Studs sold separately / Note the proper head gaskets or head gasket modifications are required for proper fitment with 14mm studs.
      • Pistons –IAG-Spec JE FSR 99.75mm 2618 Forged Pistons, Electro-nickel Plated Tops & Ring area, Ring Set, .250″ / .927″ H13 Wrist Pins, Clips, (Perfect Skirt Coating and Offset Wrist Pins)
      • Connecting Rods –IAG-Spec +2mm Tri-Beam w/ ARP625+ Rod Bolts
      • Rod/Main Bearings –ACL/King Race Bearings
      • Crankshaft –IAG Billet Crank by Callies
      • Case / Main Bolts –ARP Main Bolts
  • Specs: This IAG Short Block has a power output rating of 1100+BHP.
  • 8.5:1 on D Cylinder Heads (EJ255)
  • 8.2:1 on B, V and W EJ257 Heads with standard thickness gasket.

*All IAG short blocks are balanced and blueprinted

Required:

  • *IAG Fire-Lock .051″ Head Gaskets with IAG-Spec Alloy Ring Set* PN# IAG-ENG-1740
  • 14mm Head Studs