Description

The IAG 800 CNC Pocket Ported Competition Cylinder Heads are designed with the weekend racer in mind. These CNC pocket ported heads provide a significant upgrade in flow over the IAG 600 heads. These heads work great for cars with some race track duty (road, rally, auto-x, drag) and are designed to support up to 800 BHP with supporting mods. These heads include upgraded GSC +1mm Stainless Steel Valves, GSC Viton Valve Stem Seals, Upgraded GSC Valve Guides, Kelford Dual Valve Springs with Titanium Retainers, and OEM Keepers. FA20 Heads are configured differently from their EJ counterparts. In FA20 heads the casting is split into two parts, the "lower" and the "cam towers." As the name suggests, the "Cam Towers" hold the camshafts to the cylinder head. Kelford "A" cams are available with IAG 800 Cylinder Heads. When Kelford cams are chosen we also include new OEM cam towers, rockers, pivots, and valve shim caps.

Specifications

What's Included

  • (x2) Brand New Subaru OEM AW20 FA20 WRX DIT Cylinder Head Castings
  • (x8) GSC 35mm (+1mm) Intake Valves
  • (x8) GSC 30mm (+1mm) Exhaust Valves
  • (x16) Kelford Dual Cylindrical Valve Springs & Retainers
  • (x16) GSC Manganese-Bronze Valve Guides
  • (x16) GSC Valve Stem Seals
  • IAG Performance CNC Pocket Porting
  • Multi-Angle Valve Job
  • Drilling for compatibility with ½" or 14mm Head Studs
  • Threaded Coolant Plug Upgrade
  • Resurface
  • Ultrasonic Cleaning
  • Optional:
  • Kelford "A" 272 Camshafts
  • (x2) OEM Cam Towers & Hardware
  • (x16) OEM Rocker Pivots
  • (x16) OEM Lifters
  • (x16) OEM Valve Lash Caps
  • Bench Valve Lash Service (Final Lash Should be Checked and Adjusted Once Heads are Installed)

Compatibility

  • 2018-2021 Subaru WRX 6 Man
  • 2015-2021 Subaru WRX Base
  • 2018-2021 Subaru WRX CVT
  • 2021 Subaru WRX EyeSight
  • 2015-2021 Subaru WRX Limited
  • 2015-2021 Subaru WRX Premium
  • 2019 Subaru WRX Raui Edition
  • 2015-2016 Subaru WRX STI
  • 2017-2021 Subaru WRX Sport
  • 2017-2021 Subaru WRX Sport-tech
  • 2019-2020 Subaru WRX Sport-tech RS

The IAG 800 CNC Pocket Ported Competition Cylinder Heads are designed with the weekend racer in mind. These CNC pocket ported heads provide a significant upgrade in flow over the IAG 600 heads. These heads work great for cars with some race track duty (road, rally, auto-x, drag) and are designed to support up to 800 BHP with supporting mods. These heads include upgraded GSC +1mm Stainless Steel Valves, GSC Viton Valve Stem Seals, Upgraded GSC Valve Guides, Kelford Dual Valve Springs with Titanium Retainers, and OEM Keepers. FA20 Heads are configured differently from their EJ counterparts. In FA20 heads the casting is split into two parts, the "lower" and the "cam towers." As the name suggests, the "Cam Towers" hold the camshafts to the cylinder head. Kelford "A" cams are available with IAG 800 Cylinder Heads. When Kelford cams are chosen we also include new OEM cam towers, rockers, pivots, and valve shim caps.

  • (x2) Brand New Subaru OEM AW20 FA20 WRX DIT Cylinder Head Castings
  • (x8) GSC 35mm (+1mm) Intake Valves
  • (x8) GSC 30mm (+1mm) Exhaust Valves
  • (x16) Kelford Dual Cylindrical Valve Springs & Retainers
  • (x16) GSC Manganese-Bronze Valve Guides
  • (x16) GSC Valve Stem Seals
  • IAG Performance CNC Pocket Porting
  • Multi-Angle Valve Job
  • Drilling for compatibility with ½" or 14mm Head Studs
  • Threaded Coolant Plug Upgrade
  • Resurface
  • Ultrasonic Cleaning
  • Optional:
  • Kelford "A" 272 Camshafts
  • (x2) OEM Cam Towers & Hardware
  • (x16) OEM Rocker Pivots
  • (x16) OEM Lifters
  • (x16) OEM Valve Lash Caps
  • Bench Valve Lash Service (Final Lash Should be Checked and Adjusted Once Heads are Installed)
  • 2018-2021 Subaru WRX 6 Man
  • 2015-2021 Subaru WRX Base
  • 2018-2021 Subaru WRX CVT
  • 2021 Subaru WRX EyeSight
  • 2015-2021 Subaru WRX Limited
  • 2015-2021 Subaru WRX Premium
  • 2019 Subaru WRX Raui Edition
  • 2015-2016 Subaru WRX STI
  • 2017-2021 Subaru WRX Sport
  • 2017-2021 Subaru WRX Sport-tech
  • 2019-2020 Subaru WRX Sport-tech RS

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