06-14 WRX IAG 1000+ EJ25 Long Block Closed Deck w/ Stage 4 Heads

RallySport Direct now carries highly sought-after high-performance upgrades and accessories brought to you by IAG Performance.

On this page, you are looking at the IAG 1000+ Long Block.

This package is a complete, valve cover to valve cover, crate engine. It is the perfrect option for ease of installation and gives you a premier "drop in" engine. This kit will support up to 1000+BHP applications. IAG's break-in instructions MUST be followed and the package must be professionally installed for the 12 month / 12k mile warranty to be applicable. All IAG Short Blocks are balanced and blueprinted.

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 - Ferrea Copper / 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

more WRX STI LONG BLOCKS