Chevy Camshafts - Got Lobes?
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In most cases, the benefits of running a roller cam are hard to argue with, since it can achieve higher velocities than a flattappet cam with the same amount of lift. This creates more area under the curve, which translates to improved power at lower valve lifts. On the other hand, a flat-tappet cam's initial acceleration is faster so it actually achieves higher lift levels more quickly than a roller cam until the latter reaches its maximum velocity. If you're running a short-duration cam, a flat-tappet lifter may actually be the better choice. View Related Article
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