Stage 3 Pocket Ported Heads w/CM/+1mm Valves S20 Casting(Cams/Lifters Sold Sep)
$3,829.99 Sold out
Product Part Number: IAG-ENG-3030SC
Categories: Engine, IAG Products
Local Pickup Available
Installation Services Offered
- Shipping / Refunds / FAQs
IAG Stage 3 Pocket Port Cylinder Head Package: The head package centers around our popular CNC pocket porting program which was developed over the last several years. Pocket porting removes excess OEM casting flash and the material underneath the valves. By smoothing and blending this area under the valve seat, significant flow capability can be achieved. The IAG Stage 2 pocket ported head package starts with brand new WRX STI OEM N25 head castings, directly from Subaru of America. The bare castings are visually inspected and then fixtured into our in-house Centroid 5-axis CNC Machine. This is one of the most advanced pieces of precision engine machining equipment in the world. 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 receive our combustion chamber modification in which the shapes of the chamber are machined to reduce compression and improve the burn path. The heads then 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. Next, the heads are fixtured in our Serdi 3.0 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 GSC Single Valve Springs and Titanium Retainers along with GSC Viton stem seals.
- New Head Castings, CNC Pocket Ported, Chamber Modification, with +1mm GSC Valves, GSC Springs
- GTIN: 00887753783172
- CNC Ported: Yes
- Exhaust Valve Diameter: 33
- Intake Valve Diameter: 37
- Head Casting Number: S20
- Emissions : Not Legal For C.A.R.B. - This part is not legal for sale or use in C.A.R.B. restricted areas
- Life Cycle Status: Available To Order
- Quantity of Each: 1
- Package UOM: EA
- Dimension: 20 x 16 x 12 inches
HOW LONG DO ORDERS TAKE TO SHIP?
- We are typically very quick and have a 24-48 hour turnaround time. Transit time depends on your order and which warehouse we are shipping from, but typical transit times are between 5-7 business days from one side of the US to the other.
DO YOU PRICE MATCH?
- Yes, we do price match reputable competitors in the marketplace. If you find a product cheaper elsewhere, please email us the (1) link of the product from our website and (2) the link to the competitor site. We will make an assessment on our end if we are able to price match or not and respond to you via email.
DO YOU GUYS INSTALL?
- Our shop services range from routine maintenance, to full on track monsters. If you purchased a part from us, ask us about scheduling time to have the part installed!
DO ALL YOUR PRODUCTS SHIP FREE?
- No, only specifically marked items or orders over $100 will ship for free unless indicated otherwise.
WHAT'S YOUR DOMESTIC SHIPPING POLICY?
- UPS handles all US Shipments.
WHAT'S YOUR INTERNATIONAL SHIPPING POLICY?
- DHL or UPS only.
WHAT'S YOUR RETURN POLICY?
- 30-Day Money Back Guarantee as long as the product has ZERO signs of use and HAS NOT been opened.
WHAT'S YOUR POLICY ON ADVERTISED PRICING?
- ALL Pricing displayed specifically reflects Manufacture's Advertised Pricing as most companies will not allow the sale of their items below this threshold.
WHAT'S YOUR POLICY REGARDING FITMENT ISSUES?
- IF an item does not fit, then we'd be more than happy to guide the fitment process with you over the phone or over email.
WHAT'S YOUR POLICY REGARDING FRAUDULENT CHARGES / CHARGEBACKS?
- If we receive a declined notice or chargeback, then your account will be billed an additional $50.
DO YOU WORK WITH OTHER COMPANIES THAT AREN'T LISTED ON YOUR SITE?
- We most certainly do; please shoot us an email if you want something that you don't see to email@example.com
I WANT TO ORDER SOMETHING NOT LISTED ON YOUR SITE, CAN YOU HELP?
- Of course! Please email or call us with an inquires for both stock count, brand inquiry, or better pricing!