GSC Billet S1 Camshafts – Mitsubishi Evo 4–8 (GSC7008S1)
The GSC Power Division billet S1 camshafts (PN GSC7008S1) are designed for Mitsubishi Evo 4–8 owners running stock turbos or upgraded stock-location kits up to 550 WHP. These cams deliver improved spool and midrange gains without compromising low-end torque—30–55 WHP increases have been observed simply by installing the S1 profile.
- RPM Range: 3,000–7,500 RPM
- Turbo Compatibility: Stock and aftermarket stock-location turbos
- Valve Springs: Compatible with factory springs at lower boost and RPM targets
- Idle Quality: Slightly rougher than OEM
- Manufacturing: Precision billet construction, made in the USA
| Camshaft | ADV Duration | Duration @ 0.040" | Peak Lift | Center Line |
|---|---|---|---|---|
| Intake | 268° | 216° | 11.00mm | 107° |
| Exhaust | 268° | 220° | 10.50mm | 113° |
If you're using aftermarket cam gears—especially AEM—check bolt clearance. Some gear designs may require a 40mm underhead bolt due to increased thickness.
Fitment:
- 1996 - 1998 Mitsubishi Lancer Evolution IV 2.0L Turbo (4G63T)
- 1998 - 1999 Mitsubishi Lancer Evolution V 2.0L Turbo (4G63T)
- 1999 - 2001 Mitsubishi Lancer Evolution VI 2.0L Turbo (4G63T)
- 2001 - 2003 Mitsubishi Lancer Evolution VII 2.0L Turbo (4G63T)
- 2003 - 2005 Mitsubishi Lancer Evolution VIII 2.0L Turbo (4G63T)
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
