GSC Power-Division's Evo 9 S1 cams are designed for those with a stock turbo all the way to a GT30/50Trim. These cams will not sacrifice any bottom end loss over stock cams; nothing but gains and will promote faster spooling of the upgraded turbos. Gains of 25-40whp (depending on Turbo) have been seen by simply bolting the S1 cams in. Designed for a rev range of 3000-8000rpms, these cams work well on the stock valve springs. 300-450whp camshaft.
| Cam Exhaust Duration: | 268 |
| Cam Exhaust Lift: | 10.5mm |
| Cam Intake Duration: | 268 |
| Cam Intake Lift: | 11mm |
| Location: | Intake and Exhaust |
| Machining Required: | No |
| Springs Required: | No |
| Quantity: | 2 |
| Intake | Exhaust | |
| Duration | 268 | 268 |
| Peak Lift | 11mm | 10.5mm |
| Duration @ 1mm Valve Lift | 216 | 220 |
| Centerline @ Peak Lift | Variable | 113 BTDC |