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Old 11-09-2010, 03:46 PM
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454 cam question

Is there anything that holds cam from walking forward ? This one only has timing chain sprocket and lock

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Old 11-11-2010, 01:04 PM
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cam walker

AS the distributor gear turns it pulls the cam back in the block.
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Old 11-11-2010, 01:16 PM
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As mud.man said,, plus the lobes of a flat tappet cam are ground with a very slight angle. This also forces the cam to the rear. Only a roller cam needs the camshaft retained by other pieces...
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Old 11-11-2010, 03:09 PM
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yes, slight angle on the flat tappet lobes to push the cam rearwards.
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Old 11-11-2010, 03:19 PM
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Another little tid bit on this subject.. I see a lot of stock BBC blocks that have used high volume high pressure pumps (M77HV). Combined with heavy oils, wear the front cam gear thrust area badly. This a common problem, the pump is trying to pull the cam back with a vengeance. The fix is easy. Plus there are wear plates available to repair damaged blocks.
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