For 4G63T EVO 4-8 – GSC P-D Billet S1 Camshaft IN/EX Set 268-11.00/10.50mm Lift.
Intake Camshaft – 268 duration / 11.00mm lift
Exhaust Camshaft – 268 duration / 10.50mm lift
Intake Center line – 107
Exhaust Center line – 113
The GSC Power-Division billet S1 cams for the Evo 4-8 are designed for those with the stock turbo up to the 550 WHP stock location or aftermarket turbo kits. 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 30-55 WHP (depending on turbo) have been seen by simply bolting the S1 cams in.
- Designed for a rev range of 3000-7500 RPMs
- These cams work well on the stock valve springs with lower boost and RPM goals
- Idle is slightly rougher than stock
- Made 100% in the USA
**If using aftermarket cam gears (especially AEM) check the bolt length. Some cam gears are too thick for the OEM bolt on the billet cams, a 40mm underhead length bolt may be necessary in this case**