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Old 10-30-2002, 05:55 AM
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Cool valve spring lift

Anybody know how much lift a stock valve spring on a stock 350 head has?? The heads are on a 1980 350 with 4 bolt mains. <img src="graemlins/mwink.gif" border="0" alt="[mwink]" />

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Old 10-30-2002, 06:14 AM
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Stock Chev springs will usually go to around .500" valve lift before they go into coil bind. More important tho is to have someone check your springs with a spring checker to verify pressures at installed height and at full lift. You will find that the stock springs start going away at full lift, even with a stock cam. If you are changing cams, I would highly recommend that you install new springs, sourced from the same manufacturer as the cam and go with their recommendations. This is good insurance.
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