Product Description
GSC Power-Division billet S3 camshafts for the USDM STi and WRX with Intake only AVCS. These camshafts are built to suit high horsepower cars with a power range of 750-1000 WHP and a rev range of 4500-9500 RPMs. Specific engine modifications are required to utilize the true potential of these camshafts including a built bottom-end (sleeved or closed deck recommended), built/ported heads (casting must be clearance for higher lift), and upgraded valve springs. A standalone ECU or tune with speed density is highly recommended in order for proper idle characteristics.
Notes:
- Check Pictures for cam placement. Long nose = Left Side, short nose = Right Side
- Due to the lobe size, head castings may need to be filed down slightly for clearance - Please check during install
- Proper break in and running high zinc oil is a must on flat tappet engines
- Must be installed by an experienced technician
Vehicle Fitment:
- 04-07 Subaru STI
- 06-07 Subaru WRX
| 7025S1 | ADV Duration | Duration @ 0.040" | Peak Lift | Center Line |
| Intake | 280° | 240° | 11.55mm | 130° |
| Exhaust | 280° | 241° | 11.60mm | 115° |
California Residents, Proposition 65 WARNING
