Crawford Performance professionally hand ported high power cylinder heads come complete with a performance valve job, valve springs with titanium retainers and are ready to install. A recommended 8500 maximum RPM designed for faster spooling characteristics and less frictional loss. (Compared other comparable heads offering higher RPM limits) A race proven engineered package for high power and high torque applications. Subaru heads are priced for the pair.

HISTORY:

The Race Prepped Heads are a true race bred system, proving itself with over 16 race track wins within a 1 year time span. These race proven heads have sustained high RPM loads at the race track or drag strip and even set horsepower records on the OEM ECU with I-Speed USA tuning. There are not many race heads that can set fast times while handling the abuse dished out Crawford Performance drivers and tuners.

SPECS:

The Crawford Performance Time Attack Heads start off as brand new OEM casts. Heads are professionally built from the ground up with the following high performance parts.

- Record setting, track proven, dyno tested race heads
- Custom hand-ported and polished heads
- New Subaru OEM castings
- 5-Angle Intake Valve Job
- 5-Angle & radiused Exhaust Valve Job
- Inconel Exhaust Valves (2,400 degrees maximum)
- Stainless Steel Intake Valves (1,800 degrees maximum)
- 4130 Chromely Retainers
- High Power / High Torque Performance Valve Springs
- Hardened Steel Spring Platforms
- All heads are serialized