GSC Power-Divisions 4B11T S1 Camshafts are designed to work on the factory valve spring and with in the factory rev limits. GSCs 4B11T cams are all true drop in camhaft sets and will require very little shimming or bucket replacement on install. Expect gains of 20-40whp depending on turbo application and near stock like spool. The S1 cams are a very mild mannered cam set for the street car enthusiast wanting the most the 4B11T.
- Intake: 264, 220@1mm ,10.2mm
- Exhaust :264, 216@1mm , 10mm