Cam end play question

I am in the process of rebuilding my 73 318 and last night I was installing my new comp XE cam and noticed that I have a ton of end play (maybe 1/4"). When I pulled the factory cam out there were no bronze thrust washers installed. How much cam end play is acceptable? Where can I get some thrust washers for a mopar? This is the first small block mopar that I have rebuilt. I am a Chebby convert who has seen the light. Thanks
Author: admin