Free Shipping Iag 750 Cnc Pocket Ported N25 Competition Cylinder Heads Package W/ Gsc S1 Cams & Lifters For 18-19 Sti Type Ra 19-21 Sti Gadget [fFmCb0hv]

The IAG 750 CNC Pocket Ported Competition Cylinder Heads are designed with the weekend racer in mind. These heads work great for cars with some race track duty (road, rally, auto-x, drag) and are designed to support up to 750 BHP with supporting mods. These heads include upgraded GSC Standard Size Valves, GSC Viton Valve Stem Seals, IAG Stage 1 Valve Springs with Titanium Retainers, and OEM Keepers. GSC S1 Camshafts are available with OEM valve lifter buckets. We also offer an optional chamber modification service (see below) for EJ20 heads to allow use on EJ25 short blocks. Each IAG 750 Cylinder Head Set starts with new OEM castings from Subaru of America. The first step is to select your Year and Model of vehicle so that we may provide you with the right castings to fit your project. Next, you'll select whether or not you want to include our optional GSC camshaft package. If selected, these heads will include new GSC S1 Camshafts and OEM Lifter Buckets for valve adjustment. The bare castings are visually inspected and then fixtured into our in-house Centroid 5-axis CNC Machine. The Centroid CNC ports the intake and exhaust runners under the valves and blends them to the valve seat. Once the Centroid completes the port process, the heads undergo a cam clearance machining process which removes material from the lifter area where larger lift and duration cam profiles are known to contact the castings. The heads are then fixtured in our Newen Valve Guide and Seat Machine to cut all intake and exhaust seats with a multi-angle valve job that suits the flow characteristics of GSC's standard size valves. At this point, the heads' decks are resurfaced using our TS-3000 BlockMate, which cuts the aluminum to a smooth, even finish. Next, the heads are ultrasonically cleaned to remove debris and oils from the machining process. Finally, the heads are reassembled using IAG Stage 1 Single Valve Springs and Titanium Retainers along with GSC Viton stem seals.

• New Head Castings with Upgraded GSC Standard Size Valves, IAG Stage 1 Valve Springs with Titanium Retainers
• Power: The IAG 750 Cylinder Head Package has a power output rating of 750 BHP.

Vehicle Specific

• Subaru: WRX STI 18 - 21 Base / Kanrai Edition / Limited / S209 / STI / Sport / Sport-tech / Type RA

Attributes:

• Brand Name: IAG Performance
• GTIN: 00887753904430
• Assembled: Yes
• CNC-Machined Combustion Chamber: Yes
• CNC-Machined Exhaust Runner: Yes
• CNC-Machined Intake Runner: Yes
• Cylinder Head Gasket Included: No
• Exhaust Valve Diameter: 32
• Exhaust Valve Length: 104.37
• Exhaust Valve Material: Stainless Steel
• Exhaust Valve Stem Diameter: 6
• Grade Type: Performance
• Intake Valve Diameter: 36
• Intake Valve Length: 104.40
• Intake Valve Material: Stainless Steel
• Intake Valve Stem Diameter: 6
• Length: 20
• Material: Aluminum
• Mounting Hardware Included: Yes
• Power Rating: 750 BHP
• Valve Covers Included: No
• Valve Seal Material: Viton
• Valve Seals Included: Yes
• Valve Spring Retainer Material: Titanium
• Valve Spring Retainers Included: Yes
• Valve Springs Included: Yes
• Valves Included: Yes
• Weight: 72
• Width: 16

Extended Information:

• Country of Origin: US
• Emissions : Emissions Compliance Exempt
• Life Cycle Status: Available To Order

Packing Information:

• Quantity of Each: 1
• Package UOM: EA
• Dimension: 20 x 16 x 12 inches
• Weight: 40 POUNDS

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