How to ID 8-3/4?

Is that cam spec duration @ .050 or advertised and by whom is it made by. Because advertised duration specs differ greatly between manufacturers.

Just a generalization at this point. Have not chosen make or exact grind yet

Your wheels are 14 inch. Now what about your tires? Wheel size is useless! Tire size is everything else!

Haven't picked out tires either. Old ones are 30+ years old-not gonna run those