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IAG 1000+ Closed Deck Long Block Engine w/ Stage 5 Heads for 06-14 WRX, 04-21 STI, 04-13 FXT, 05-09 LGT

IAG 1000+ Closed Deck Long Block Engine w/ Stage 5 Heads for 06-14 WRX, 04-21 STI, 04-13 FXT, 05-09 LGT

$ 17,499.99

IAG 1000+ Long Block Engine Includes:



Stage 4 Extreme Closed Deck Includes:

  • Case Halves -Converted to Closed Deck from brand new OEM Subaru case halves, bored and honed to 99.75mm.
  • Pinned Mains -Machine case for 9.5mm pinned mains and lined honed.
  • 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
  • Head Studs -Machined for 14mm Head Studs.
  • Pistons -IAG-Spec JE FSR 99.75mm 2618 Forged Pistons, Electroless Nickel Plated Tops & Ring area, Ring Set, .250" / .927" H13 Wrist Pins, Clips, (Perfect Skirt Coating and Offset Wrist Pins)
  • Connecting Rods -IAG-Spec Tri-Beam Connecting Rods with ARP 625+ Rod Bolts.
  • Rod / Main Bearings -ACL or King Race Bearings.
  • Crank -Billet Crank by Callies
  • Case / Main Bolts -ARP Main Bolts.


Stage 5 Heads:

  • Heads - Brand New Subaru OEM WRX STI Cylinder Head Castings
  • Machine Porting - CNC Ported Intake and Exhaust Runners
  • Intake Valves - Ferrea 37mm (+1mm) Comp Plus Intake Valves
  • Exhaust Valves - Ferrea 33mm (+1mm) Comp Plus Exhaust Valves
  • Springs / Retainers - Ferrea Dual Valve Springs & Titanium Retainers
  • Keepers - Ferrea Valve Keepers
  • Guides - GSC Manganese Bronze Valve Guides
  • Valve Seals - Ferrea Valve Stem Seals
  • Lifters - OEM Lifter Buckets
  • Camshafts - GSC Stage 3 Billet Camshafts
  • Multi-Angle Valve Job
  • Machined Cam Lobe Clearance
  • Drilled For 14mm Heads Studs
  • Resurface
  • Ultrasonic Cleaning
  • Final Lash


Gaskets, Hardware & Accessories:

  • Head Studs - IAG / ARP 14mm Set
  • Head Gaskets - IAG Fire-Lock™
  • Valve Cover Gaskets - OEM
  • Cam Seals - OEM
  • Valve Covers - OEM
  • Wrist Pin Seal, Rear Main Seal & Separator Kit
  • Crankshaft Woodruff Key

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