In their September issue, the editorial staff at Car Craft took the advice of renowned engine builder Kenny Duttweiler to treat a properly sized, high-efficiency turbo engine like a naturally aspirated one. To do so, the team set up experiments in which they installed three different COMP Cams single-pattern hydraulic roller camshafts on a 420c.i. small block stroker with a pair of 76mm turbos. The engine also features COMP short travel lifters, tool steel retainers and a three-piece billet aluminum timing cover. You can read the results of the experiments by clicking on the link below. We also encourage you to pick up the September 2012 issue of Car Craft.
Click the link to see the Car Craft PDF,