Crawford CCR 660 Club Racer Subaru Cylinder Heads | EJ WRX STI

Crawford CCR 660 Club Racer Subaru Cylinder Heads | EJ WRX STI

Crawford Club Racer CCR 660 – Cylinder Head Service (Pair)

Built for club racing. Behaves on the street.

The Crawford Club Racer CCR 660 cylinder head service delivers CNC-ported EJ heads for Subaru WRX/STI builds targeting ~520–550 whp (roughly ~660 bhp at the crank) with the right turbo, fuel, studs, and tune. Expect stable high-lift airflow, clean sealing, and repeatable results—prepped the same way we build heads for our motorsport programs.

Quick Specs

• Platform: Subaru EJ (WRX/STI)
• Output target: ~520–550 whp potential (supporting mods required)
• CNC porting + hand blend
• MLS-ready deck finish
• Lash set to your cam card
• Pressure-tested before shipment

Who It’s For

• EJ-platform WRX/STI builds that have outgrown stock ports and factory seat geometry
• Track days, time attack, drag, and serious street cars that demand reliability
• Builders who want documented, repeatable clearances and seat/guide work

What You Get (Pair of Heads)

• CNC porting + hand blend (intake/exhaust) for stable high-lift flow and consistency
• Competition multi-angle/radius valve job matched to your cam profile and intended RPM range
• R&R 16 bronze valve guides with new Viton valve seals
• OHC bucket lash set to your cam card (Kelford / GSC / OE)
• Precision resurfacing to an MLS-grade finish for reliable sealing
• Pressure test, final clean, and assembly with heat tabs
• Build sheet with recorded clearances (optional flow sheet add-on)

Popular Options (Select at Checkout)

• Valves: Stainless intake / Inconel exhaust (Manley or Ferrea)
• Springs/Retainers: Dual spring kit + titanium retainers
• Combustion chamber match: gasket bore match (99.5–102 mm) + chamber deshroud
• AVCS: single- or dual-AVCS configuration based on casting/VIN and your setup
• Cams: supply your cams or select recommended profiles

Compatibility & Fitment

• Platforms: EJ205 / EJ255 / EJ257 / EJ207 (specify by VIN/casting)
• AVCS: we configure to your application—select single/dual AVCS at checkout
• Intended use: off-road/competition; professional calibration required

Recommended Supporting Mods

• ARP 625+ head studs + MLS head gaskets (thickness chosen to set quench)
• Fuel system sized to the goal; quality AOS; proper oiling and ventilation
• Turbo sized for 520–550 whp, adequate intercooling, and real heat management
• Professional tune; verify boost control, knock strategy, and coolant/oil temps

Core, Castings & Lead Time

• Service price covers machine work and assembly. Does not include castings unless selected.
• Send your heads or add new OEM castings from the dropdown.
• Small-batch production; lead times vary. When sold out, next-batch ETA applies.

Legal

Competition/off-road use only where applicable. Not CARB-approved. Professional installation and calibration required. Power estimates vary with turbo, fuel, altitude, dyno type, and tuning.