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They can be used to advance or retard the cam timing to correct inaccuracies in the cam or change the characteristics of the cam profile.

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14y ago

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When you do a timing check on your 1974 6 cylinder engine the timing mark jumps back and forth a couple of degrees you think it has timing gears instead of a chain you would like to find out why if it?

The make would help. Some used a timing chain and others used gear to gear. The distributor could be worn also.


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