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Old 03-24-2004, 01:32 PM
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Old 03-29-2004, 06:06 AM
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It would depend on what you mean by better valves, bigger? swirl polished? necked down at the stem? first off, bigger flows flow more, however, combustion chamber size comes into play, and cylinder bore size comes in, if the heads have small chambered, it`s best to have them deshrouded otherwise there`s a possibility they`ll flow less than the smaller valve would. a swirl polished valve won`t flow any better than a stock valve, a necked down valve will flow more but the gain is rather small. as far as pistons go, it matters not what the pistons made of in it`s ability to seal, cast, hyper, forged, all come in the same designs and one won`t perform no better than the other, but cast is the weakest, hyper`s a mid grade, and a forged is the strongest, however there are light forged pistons not made for racing, just as well as they are hyper designs with this same thing in mind. polished crank, you mean the journals polished or the whole crank? Nitrous oxide is rather fun, but it must be used properly and set up properly, if not, the results end up being disasterous, melted pistons and etc can get costly fast. A book by David Vizard would be right for you, small blocks on a budget is what it`s called, it and many other books out there give full details to help along someone just starting out.
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