IAG 600 FA20 DIT Long Block Engine w/ IAG 600 Heads

IAG 600 FA20 DIT Long Block Engine for 2015-21 Subaru WRX

DROP IN AND DRIVE

The IAG Performance hand-built 600 FA20F (DIT) Long Block Package is a complete, valve cover-to-valve cover, timed crate engine designed for a true drop-in installation in 2015-2021 Subaru WRX applications. These long blocks combine a proven IAG short block and cylinder head package with race-proven components to deliver a plug-and-play solution. All components are BRAND NEW and there is NEVER a core charge required.

SOLD COMPLETE, TIMED & READY TO INSTALL

Every IAG 600 FA20 Long Block is sold complete with all new timing components pre-installed, making the installation process straightforward and minimizing timing-related risks during assembly. This is especially helpful on FA20 engines, which have a more complex timing system than many Subaru platforms. Most installations can be completed in a day.

BUILT WITH 100% NEW COMPONENTS

The IAG 600 long block is built to support up to 600 BHP applications. The FA20F (DIT) short block begins with new Subaru FA20 engine case halves modified for improved oiling, bored and honed to 86.1mm using precision in-house equipment, and assembled with a new Subaru FA20 WRX crankshaft matched to high-performance ACL or King race main bearings. Upgraded IAG-Spec H-Beam connecting rods with ARP2000 rod bolts and forged JE FSR 86.1mm pistons complete the internals for enhanced strength and performance.

FORGED RODS & PISTONS

To overcome the known weaknesses of OEM FA20 connecting rods at higher torque levels, the IAG 600 features IAG-Spec H-Beam rods and ARP hardware. This upgrade provides greater reliability under increased cylinder pressures. Each short block also includes high-strength JE FSR 2618-alloy pistons with an asymmetrical skirt design for reduced weight and improved combustion characteristics.

IAG 600 FA20F (DIT) CYLINDER HEAD PACKAGE

The 600 FA20F head package uses brand new AW20 WRX OEM head castings. These are machined with multi-angle valve jobs, deck resurfacing, and ultrasonic cleaning before reassembly. Performance components include Kelford dual cylindrical valve springs with titanium retainers and new GSC Viton valve stem seals. The head assembly also incorporates Kelford 264-EZ camshafts for a broader power band and improved driveability.

COMPRESSION RATIO

The IAG 600 FA20 DIT Long Block features a 10.6:1 compression ratio on standard gasket thickness, optimized for balance between performance and reliability in boosted Subaru FA20 applications.

IAG 600 FA20 DIT LONG BLOCK INCLUDES

IAG 600 FA20F DIT Short Block Includes:

• Case Halves – Brand new OEM Subaru FA20 case halves, modified for improved oiling and bored & honed to 86.1mm
• Pistons – IAG-Spec JE FSR 86.1mm forged pistons, ring set, and .150" x 2.250" carbon steel wrist pins
• Connecting Rods – IAG-Spec H-Beam rods with ARP2000 rod bolts
• Rod / Main Bearings – ACL or King race bearings
• Crankshaft – New Subaru FA20 DIT WRX crankshaft
• Case / Main Bolts – Standard Subaru case bolts
• Hardware – OEM oil plug preinstalled at oil pan location

IAG 600 FA20F DIT Cylinder Heads:

• Heads – Brand new Subaru AW20 WRX OEM cylinder head castings
• Intake Valves – GSC 36mm standard intake valves
• Exhaust Valves – GSC 32mm standard exhaust valves
• Springs / Retainers – Kelford dual valve springs with titanium retainers
• Guides – OEM Subaru valve guides
• Valve Seals – GSC Viton valve stem seals
• Lifters – OEM Subaru lifters
• Camshafts – Kelford 264-EZ camshafts
• Multi-Angle Valve Job – head resurfacing, ultrasonic cleaning, and final lash

Gaskets, Hardware & Accessories:

• Head Studs – ARP 2000 11mm set
• Head Gaskets – OEM Subaru
• Valve Cover Gaskets – OEM Subaru
• Cam Seals – OEM Subaru
• Valve Covers – OEM Subaru
• Timing Components – OEM Subaru
• Oil Pump / Timing Cover – OEM Subaru
• Rear Main Seal & Separator Kit
• Crankshaft Woodruff Key

Please Note: This item is not eligible for standard ground shipping and must be delivered via freight. 
STOCK NOTICE: This item is built to order and carries a minimum 6-8 week build time.

IMPORTANT DELIVERY NOTE: Your order is shipping Via Truck Freight which requires you to be available at the time of receipt. There is a possibility the trucking company will try to schedule a delivery time with you. At the time of delivery, the driver will hand you the delivery receipt also referred to as the bill of lading, you will use this to notate any damages to the shipment. It is important that you fully inspect the shipment from all sides and notate any dents, punctures or rips in the outside packaging on the delivery receipt. Once you've inspected your shipment from the outside, you will need to open it and check the product in its entirety for damages and notate them if any. If there is no damage sign for the package and enjoy! In the rare case, you do find that your order arrived with damages, it is important you follow these steps. - Do not refuse the product- Document the damages in as much detail as possible on the Bill of Lading
- Take numerous photos from all angles (including packaging)
- Keep the product and contact the shipping company to start the damage claim
- Contact us either by phone or email for the next steps In the situation where the delivery driver is unable to wait for you to open and inspect your product, simply document "driver was unable to wait for inspection." All damage must be noted on the Bill of Lading before signing and initiating a damage claim. If the damage is not notated before signing for the item it is assumed to be in good condition. This will forfeit the ability for a shipping claim and you will not be eligible for refund or replacement.