Re: A, B or "touring" cam?
Set the cam in the engine with one exhaust and one intake valve and adjustable lifters. Set the tappet gap to 0.010 inch on both valves. Set a degree wheel on the crankshaft with a pointer. Set a dial indicator on one valve and measure the degree duration and lift. Use 0.010 inch lift off the seat for the valves as the start and end of the duration. Do this for both valves. Then compare your results with the specs. Depending on how the specs are listed, whether by crankshaft degrees or by cam degrees, you may have to divide the duration by two.
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