Classic Engine Tech 1967 - 1981 Engine Related

cam question

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Old 02-10-2005, 06:17 AM
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cam question

what is the difference between a hydraulic cam and a roller hydraulic cam? what are the plus and minuses of the two?
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Old 02-10-2005, 06:48 PM
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Re: cam question

a hydraulic cam has a flat cylinder lifter that slides against the cam lobe. see pic

a hydraulic roller cam has a roller bearing that rides on the cam this has less friction. it also prevents cam's from going flat as fast if at all and allows for a faster ram speed and longer time at max lift whitch give more hp. see pic
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