Im rebuilding my 2F (77 model). I took it to the machine shop to be cleaned, honed, cam bearings, etc. When I got it back, I put in the mains, pistons rings and rod bearings and everything was perfect. When I went to put the cam in, oops, cams to big for the bearings, or at least the front one for sure, cant tell about the rest of them yet. I called the machine shop and he said I would have to scrape the front bearing. Well I thought bull poop, afaik you havent had to scrape bearings since the 30's and 40's. I've put in a bunch in smb chevys and never had to do that. So I go order me another set of bearings and put them in my self. While the cam is out I slide them over the cam and they fit perfect. I put them in the block and nope, cam don't fit. So I entertain the idea of scraping the bearing and got some sand papper and kept working with it untill I got the cam to fit in the front bearing. Well guess what, all the others are the same way. Anyone had trouble like this? I would sure welcome some input form anyone. One set of bearings were clevite and the other set are sealed power. Kinda thinking there may be a problem with both set of bearings, but I figure thats pretty unlikely. Anyway, any input would be appreciated.