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How to Choose Camshafts & Time Them for Maximum Power Des Hammill
Publisher: Veloce Publishing

Torque cams have less valve overlap in general than high rpm HP cams. It turns out that there is a direct relationship between the shape of the cam lobes and the way the engine performs in different speed ranges. Our mission is to serve our customers needs by offering the widest and latest selection of premium quality product at low prices while providing excellent customer service. Let's face it, modular Ford owners do not look lovingly at their engine bay when it comes time to swap cams. Lift is increased by approximately 1.14 and 1.36 mm on the intake and exhaust sides respectively. How to Choose Camshafts & Time Them for Maximum Power. As the camshaft spins, the lobes open and close the intake and exhaust valves in time with the motion of the piston. The more torque your v twin can generate, the bigger In the quest for maximum power output, many-too-many Harley owners choose a late closing, high-rpm cam for their engine. It is also pretty common for an individual to want the best of both worlds … good strong bottom end power as well as great top end, high RPM power … but, it is practically impossible to have them both. At the very least, most view the process as time consuming and technically challenging, if not overwhelming. The key parts of any camshaft are the lobes. As a result, the camshaft dictates an engine's power curve and at what point in the RPM range the engine will produce maximum horsepower and torque. For a camshaft to work as intended, it must always be rotating. Download How to Choose Camshafts & Time Them for Maximum Power. With a good tune and free-flowing exhaust, Shelbys can pick up a bunch of power at the rear wheels with these cams. The problem with such choices is that the engine seldom spends time in the rpm range favored by such cams. The camshaft uses lobes (called cams) that push against the valves to open them as the camshaft rotates; springs on the valves return them to their closed position.