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Old 06-17-2003, 16:59   #1 (permalink)
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choosing a cam

i'm trying to choose a new cam for my 81 302 with stock heads. It has the stock double valve springs and hydraulic lifters. my engine has a weiand intake manifold and edelbrock carb and about 9:1 compression. I'm currently looking at comp cams, and i want to know how big a lift i can go with my engine, and what will work best. I'm looking at a cam with .493 int , .500 exh. If anyone has a suggestion of a better cam or if that will work, that would be awesome.
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Old 06-17-2003, 18:56   #2 (permalink)
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Not much point putting a high lift cam on a basically stock engine. you will need the upgrade the springs at least or you will have all sorts of problems.
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Old 06-18-2003, 14:56   #3 (permalink)
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yeah, i'm going to buy some new valve springs. and now i'm thinking about a comp cam with 268, 268 duration and .456, .456 lift, i think that might work a little better for my stock heads, cause i don't want to run into problems with valve float or anything else that might happen.
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Old 06-23-2003, 20:59   #4 (permalink)
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Re: choosing a cam

that 268 H cam from comp should work wonders for you i have one myself and have yet to install it in my 351 but i know someone who put one in a 302 and he said it was a very strong pulling cam and that it works well with some stock accessories.
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Old 06-24-2003, 00:42   #5 (permalink)
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Re: choosing a cam

Whatever you use you must always check coil bind on each spring, piston to valve clearance, rocker clearance on fulcrum etc. But anything under 500 valve lift and 270 duration is o/k. Just make sure the parts work together. Too big a cam or incorrect springs can cause all sorts of problems esp when NOT checked!!!
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