Originally Posted by Craig J
Originally Posted by Cab_Burge
I've seen cam bearings spin in stock blocks and had no issues reinstalling another set of new stock cam bearings and having the motor live a long and happy life after getting problem fixed that made that cam bearing spin, not enough clearance to the cam journals whiney realcrazy
All the replacement cam bearings I've seen and used are mainly all Babbit, which is very soft so as long as you remove the excess Babbit stuck to the block so the new bearing installs correctly, round and enough clearances to the cam journals wrench scope luck
IHTHS


I installed new durabond bearings and the old cam would not even think about going in all the way... so I used a pretty barbaric method to "fix" the problem.



In my experience the problem is the journal being tight and it's usually on the middle or 2nd to the rear cam journal. The correct way to fix this is honing out the cam journal prior to installing the bearing. Aka dial bore gage the cam bearing tunnel prior to assy just like any other bore on the engine. Scotch bright scares me around a half assembles engine!