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Old 12-08-2002, 02:32 PM
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Question roller lifters

i am fixing to buy a 305 vortec motor. the bottom end has seized with under 70000 miles on it. i am getting the motor for the heads, i have seen the top end and everything looks good. my question is would it be worth while to put the roller lifters in my motor, or will they destroy my crane energizer cam(not roller). good or bad idea?
BTW my cam has about 10000 miles on it, 450 lift, 274 duration if that makes any difference. thanks

[ December 08, 2002: Message edited by: tonylsg ]</p>

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Old 12-08-2002, 02:49 PM
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You can't run rollers on a non-roller cam, many reasons but definetly a no.
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Old 12-08-2002, 05:15 PM
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yeah that is what i figured but i thought i would ask anyway.
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Old 12-08-2002, 06:57 PM
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the lobes on a non-roller cam, are angled a little bit to allow the hyrdrolic lifter to rotate to get it to spin, and wear better. The major advantages to a roller cam is that it is less strain on the valve train. And can it can make the valve open quicker. On a hydrolic cam, the lobe has to be shaped like a hill to make it so the lifter can go up and down, with a roller cam, the angle can be much greater, and you can have the valve open faster to its peak then with a hydrolic lifter
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