This cam is in our opinion the most aggressive yet still streetable hydrualic roller camshaft available for the 2.3 turbo engine. It features new designed high velocity lobe profiles (properly timed) and is best suited for ported heads that can take advantage of it's high .585" valve lift.  It is a high duration, high lift camshaft that we feel is the largest turbo cam you can run on the street with hydrualic lifters . It is definitely geared for higher RPM and we found it makes excellent power from 3200-7200RPM.  Valve springs with a minimum of 155# closed seat pressure are required. Will fit in stock heads with our engineered Beehive valve, spring and retainer kit- no machine work required to guides or spring pockets.