The IAG Performance Hand-Built Subaru EJ25 Closed Deck Long Block Engine Packages are a complete, valve cover to valve cover, crate engine. The Long Blocks feature a combination of our proven IAG Performance 750 Closed Deck Short Block and IAG 750 Cylinder Head packages, along with other race-proven components to complete the assembly. When paired with our Long Block Installation Packages, you have a true plug-and-play solution to get you back on the road, FAST! All components included are BRAND NEW and there is NEVER A CORE CHARGE required. The IAG 750 Long Block package is ideal for clients looking for an engine package to support up to 750 BHP applications. The IAG 750 long block features our 750 Closed Deck Short Block that utilizes a brand new EJ25 Subaru case that is converted to closed deck and is bored and honed to 99.75mm. The IAG 750 short block internals include IAG-Spec JE FSR 2618 forged pistons, .210" 9130 pins, IAG-Spec Tuff H-Beam connecting rods with ARP 2000 rods bolts and an OEM STI crankshaft. The block is then paired up with our IAG 750 Pocket Ported Cylinder Heads to increase flow, but maintain spool. The heads start as brand new Subaru OEM cylinder head castings that are CNC machined and resurfaced. The heads are outfitted with GSC Standard Size Valves, GSC Viton Valve Stem Seals, GSC Valve Guides, IAG Stage 1 Valve Springs with Titanium Retainers, and OEM Keepers as well as GSC Billet Stage 1 camshafts. To complete the package, we add an 11mm ARP 625+ head stud set and all required gaskets for the final valve cover-to-valve cover assembly. IAG's Standard Long Block Workmanship Warranty covers your long block for 12 months or 12,000 miles. We have also teamed up with IAG Certified Installation Facilities which offer a 24 month/24,000 mile workmanship warranty when the engine is purchased, installed, and tuned by that IAG Certified Installer.

IAG 750 Ej25 2.5l Long Block Includes: IAG 750 EJ25 2.5L Closed Deck Short Block: Case Halves - Converted to Closed Deck using brand new Subaru OEM case halves, bored and honed to 99.75mm, Pistons - IAG-Spec JE FSR 99.75mm 2618 Forged Pistons, Ring Set, .210" 9310 Steel Wrist Pins, Clips, (Perfect Skirt Coating and Offset Wrist Pins), Connecting Rods - IAG-Spec Tuff H-Beam / ARP2000 Rod Bolts, Rod / Main Bearings - ACL or King Race bearings, Crankshaft - Standard New Subaru Nitride Treated 2017+ STI Crankshaft, Case / Main Bolts - Standard FHI Subaru case bolts. IAG 750 CNC Pocket Ported Cylinder Heads: Heads - Brand New Subaru OEM WRX STI Cylinder Head Castings, Machine Porting - CNC Pocket Ported, Intake Valves - GSC 37mm (+1mm) Intake Valves, Exhaust Valves - GSC 33mm (+1mm) Exhaust Valves, Springs / Retainers - GSC Single Valve Springs & Titanium Retainers, Guides - OEM Valve Guides, Valve Seals - GSC Valve Stem Seals, Lifters - OEM Lifter Buckets, Camshafts - GSC Stage 1 Billet Camshafts, Multi-Angle Valve Job, Machined Cam Lobe Clearance, Resurface, Ultrasonic Cleaning, Final Lash. Gaskets, Hardware & Accessories: Head Studs - ARP 625+ 11mm Set, Head Gaskets - OEM, Valve Cover Gaskets - OEM, Cam Seals - OEM, Valve Covers - OEM, Wrist Pin Seal, Rear Main Seal & Separator Kit, Crankshaft Woodruff Key.
,Power: The IAG 750 Long Block has a power output rating of 750BHP.
,All IAG short blocks are balanced and blueprinted.
,During installation your mechanic will need to swap over the external components from your engine such as the intake and exhaust manifolds, turbocharger, fuel pump, injectors, etc.