Right now I'm working on a 254 flathead 6 cylinder for a customer. Just getting some parts figured out and it looks like cam bearings are not easy to come by. The dimensions ID and OD are the same as the ones used in the 215,223, 262 and also the Y block V8s. I was wondering if anyone had substituted a set.

 

I have not heard of that size motor before but I also dont know the older stuff.
You may want to ask this question in the truck area for the year that motor would come in as they may have an answer.
Good luck
Dave ----