Any number of manufacturers. Pick up a hotrod magazine and get some phone numbers. Iskenderian (sp?), Comp Cams, Lunati, Crower, etc. There are a LOT of cam builders out there. If that doesn't work, take the measurements of what you need and go to a machine shop. They should be able to bust one out on a lathe real fast.
I dont know of anyone that makes a cam button for the amc engine,the amc uses a bolt on the end of the cam,and the timing cover is not the best for a thrust surface,the oil pump should hold the cam back without the need of a button.
I hope to go to a engine builder this weekend who deal with amc v-8's.got his name from one of the hot rod magizines,he is using roller cams and getting over 700 HP out of 401's,I will ask him if he knows of any
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