I have the stipe 330 cam in my tudor. It has a snyder 5.5 head, oversize intake valves, and a B carb. It runs great, and has plenty of power.
Bill Stipe says the 340 cam is better if you have big valves, weber carb, and 6 or 7 to one head. otherwise 330 is the cam to use.
http://specialtymotorcams.com/pages/camshafts.html