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Old 02-01-2008, 01:38 PM
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SBC cam thrust washer??

Hey guys another quick question here. Just wondering on a stock small block chevy what stops the cam from lateral movement?? on my SBC i tore down, the camshaft didnt have a thrust washer or anything to prevent it from sliding forward and backward, once I took the chain off the gear i could just slide the cam right out the front. Does this mean that on a SBC the chain is the only thing holding the cam in place and preventing it from sliding forward and backwards??

Thanks for your help,
Keith.

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Old 02-01-2008, 01:48 PM
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You are correct sir, the chain is the only thing keeping the cam in place, except for the lifters...and the distributor gear.

On a roller cam a cam button is used because roller lifters don't hold the cam, also a button is used on a gear drive and recommended camshaft endplay is usually .007" to .015" but varies with manufacturer.
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Old 02-01-2008, 03:48 PM
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On a flat tappet cam the lobes are ground at an angle so the tappets will rotate and this in turn pulls the cam into the block along with the distributor gear .
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Old 02-01-2008, 04:29 PM
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Ok thanks for the info it makes sense to me now
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