Cam button / stock timing chain cover

Carnut68 said

A friend of mine says there's no way the cam can move forward and hit the timing cover on a BBM, SBM yes. Even with the timing chain installed. ????

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WTF? A small block has a cam retaining plate. It can’t move forward. A big block doesn’t. It relies on cam lobe taper to keep the cam centered in the block.

Going to a roller eliminates that taper and you have to keep the cam from moving forward in the block.

Sound familiar? Same thing on a cheap assed SBC.

Buy a Milodon gear drive and be done with all that junk. Buy once, cry once.