The IAG Performance hand-built Subaru 1150 2.35L Destroked Long Block Engine package is a complete, valve cover to valve cover, crate engine. This engine provides a straightforward "drop-in" solution for those looking to upgrade their 2002-2014 Subaru WRX, 2004-2021 Subaru STI, 2004-2013 Subaru FXT, or 2005-2009 Subaru LGT. This long block features a combination of our proven IAG EJ25 2.35L Destroked Closed Deck Short Block and IAG 1150 Cylinder Head packages, along with a full range of carefully selected high-performance components to complete the assembly. When paired with our Long Block Installation Packages, you’ll 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.
HAND-BUILT WITH 100% NEW COMPONENTS
IAG’s 1150 2.35L Destroked Long Block Engine package delivers track-level power, making it ideal for high-performance applications that support up to 1150 BHP. This comprehensive Long Block package features our IAG 1150 Closed Deck Short Block that utilizes a brand new Subaru EJ25 engine case that is converted to closed deck and is bored and honed to 99.75mm. The IAG 1150 2.35L block features 14mm head stud machining, as well as our Fire-Lock™ gasket solution that is loosely derived from diesel technology where a counterbore step is machined around each cylinder bore allowing specially sized fire rings to drop into the machined area and head gasket bores. The combination of the alloy compression shims and gaskets assure maximum sealing for Subaru EJ25 turbocharged engines. The IAG 1150 internals include custom JE 99.75mm FSR 2618 pistons, JE Pro Seal Ring Set, along with .240" H13 tool steel wrist pins. Also included are custom IAG spec +2mm Tri-beam forged connecting rods, IAG Spec billet 75mm crankshaft, ACL Race Bearings and ARP case bolts.
The IAG 1150 block is then paired up with our IAG 1150 Fully CNC Ported Cylinder Heads to deliver maximum flow for high horsepower applications. The heads start as brand new Subaru OEM cylinder head castings that are CNC machined ported inside the intake and exhaust runners. The heads are resurfaced and then outfitted with complete Ferrea valve train components. The heads include +1mm oversized Comp Plus intake and exhaust valves, Ferrea Dual Drag Valve Springs, Titanium Retainers, GSC Manganese Bronze Valve guides as well as your choice of GSC Billet Stage 2 or Stage 3 camshafts and Kelford DLC Coated Lifter Buckets. To complete the package, we add a 14mm ARP head stud set, our Fire-Lock™ head gasket solution and all required gaskets to complete the valve cover-to-valve cover assembly.
