Unfortunately the cam pin sizes for different cams are all over the map. Along with my timing cover I used to supply a 3/16" diameter pin, 1.5" length, with a 10-32 hole in the middle so that it was easier to pull out. I was getting them from McMaster Carr. They were all in spec, but a lot of the cams had a hole that was slightly smaller in diameter for some reason, at least according to my customers. So I quit supplying those pins.
I would try McMaster Carr anyway, because the pins are pretty cheap, but don't be surprised if you have to slightly enlarge the pin hole in the cam.