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did any of the bearings have to be reamed or scraped to make the cam turn freely? that raises another question, if the cam didn't turn easily with 2 fingers during the assembly process, it was too tight.



This is what I am going with. I don't build as many motors as some on here, but I have done a handfull of big blocks that had cam/cam bearing interference issues. My understanding is it is a fairly common issue on big blocks.

Regaurdless of what engine though, I always check how the cam spins before the chain goes on.

I now use an old cam I grooved the journals on (after I saw the idea here on Moparts ) so it fixes any interference issues. It works great.

Outcast Dodge guy.