Comp makes a hydraulic roller cam with similar timimg specs, but a LOT more lift. It's their XR-264-HR. It has 264 degrees of intake duration and 270 degrees of exhaust, but the valve lift is .487/.495. That would require valve guide modifications, and probably stronger valve springs, since the rate of lift woule be pretty extreme. It would be quite a bit more radical than the flat-tappet version, even if the idle lope is not very noticeable. It's going to cost considerably more because of all the high-tech gizmos the roller lifter setup needs. I'd hesitate to use that one for a daily driver.
Jerry

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