GSC Power-Division Billet S1 Camshafts for the 2008-19 Subaru STI EJ257B With Dual AVCS. Good for stock frame turbo or up to 500 WHP (GT35R) upgrades. Upgraded valve springs are required; GSC Beehive valve springs are recommended but not required.
Specs:
| 7026S1 |
ADV Duration |
Duration @ 0.040" |
Peak Lift |
Center Line |
| Intake |
264° |
226° |
10.80mm |
125° |
| Exhaust |
264° |
222° |
10.50mm |
128° |
GSC Install Recommendations:
- Check Pictures for cam placement. Long nose = Left Side. Short nose = Right Side
- Due to the lobe size, head castings will need to be filed down slightly for clearance - Please check during install
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