Keith :
You can use the timing mark, but the rationale for the degree wheel is
that the timing mark may be inaccurate. There are some good
instructions on Crane's web site at :
http://www.cranecams.com/instructions/degreeing/degree.htm .
Looking from the front of the car back towards the engine, both the cam
and crank turn clockwise. This will be real obvious when you are
looking at it, since the chain tensioner has to be on the slack side of
the chain. So, with the crank at TDC, the further clockwise you turn
the cam, the more advanced it will be.
Note that I've heard reports that some aftermarket cam sprockets are not
cut correctly, and turning them 180 degrees or back to front does not
change the cam timing.
Randall
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