replacing cam bearings?

Well I have a 318 with a few miles on it and I wanted to warm it up with a new cam, lifters, timing chain, and 4 barrel manifold. When I pulled the old cam out the 2nd to last bearing had broke down a bit and was losing some of its shelac or coating? So I feel I should be replacing the bearings as well. The last time I replaced cam bearings a long time ago, I had a piece of threaded rod that reached the back of the block with a couple of washers the size of the bearing to pull them out toward the front of the block. I don't have that now. Do they make a tool, or is there a better way. Looking for some experience from the back yard mechanics.

Thanks for any replys.