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Old 12-16-2002, 09:52 PM
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Post solid or hyd

have a questions on cams choice if you put two cams one 501 hyd and 501 solid beside each other witch would be best for street use?never used solid cam before wanted to try it out.i know that i dont have to keep adjusting the valves but are the grinds on solid cams more agresive? <img src="confused.gif" border="0">

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Old 12-16-2002, 09:57 PM
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hydralics are best for street and have quiet valve trains compared to a solid. Solids also require frequent valve adjustment. solid lifters will rev higher if compared to a hydralic lifter.
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Old 12-16-2002, 10:00 PM
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what do you mean by rev higher? is that faster or it will just rev higher?
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Old 12-17-2002, 03:32 AM
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Hydraulic lifters essentially use a cushion of oil to compensate for valve clearance. This allows them to run quieter and eliminates periodic adjustment. However there comes an RPM range where the oil pressure in the engine can't keep the hydraulic lifters pumped up enough to open the valves correctly. This "floating" of the lifters limits the high rpm of hydraulic camshafts to around 6500-7000 rpm. The problem gets worse if you have a high lift camshaft and high-pressure valve springs.

Solid lifters don't use the oil except for lubrication so they don't have the "floating" problem and can rev to the limit of the rest of the valve train components, or the engine’s ability to stay together, whichever comes first.


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