GSC Power-Division billet 7009S3 cams are a hydraulic lifter profile for the Evo 9 4G63. These cams are meant for 700+ WHP to take advantage of a very large turbo. These are NOT suggested for anyone running smaller. GSC Power Division S3 Camshafts 4G63
**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**