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Showing results for tags 'camshafts'.
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Intending to redo my camshafts to fast road specs. Any recommended place and no. pls. Thanks
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Hi does anyone know of any workshops here that can Reprofile OEM camshafts for higher lift 250-262 degrees...
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A PRIMER ON CAMSHAFTS by Henry D. Manley III (of Manley Performance Products Inc, http://www.manleyperformance.com ) The camshaft has been called the heart of the internal combustion engine, and there is a great deal of truth in this statement. The camshaft controls the valve train making possible the entire four cycle event. In stock American passenger car engines the camshaft is designed to deliver smooth quiet idling and good low speed performance. To acheive these ends as much as one fifth of the potential horsepower is sacrificed for two basic reasons. First, the valves are not moved off their seats radically, and second, the valves are not left open for long durations. Of course, there is some overlapping of the valves, and this is not particularly condusive to good performance, but at high engine speeds this overlap actually becomes beneficial as will be shown later. A racing camshaft basically opens the valves higher and leaves them open longer than a stock camshaft. However, the exact profile of the cam, that is, how the cam actually accomplishes this event, is of primary importance. The ideal situation would have the intake valve snap open instantly at approximate top dead center ( TDC ) and remain open until 40