>If I had drilled and tapped the cam for a bolt I'd have been OK.<

>Froze the cam and pressed the timing gear on,<

>The cam walked backward and <

>because the press fit has to be tight enough not to let the cam slide backward. If I had drilled and tapped the cam for a bolt I'd have been OK.<

Those are statements from your other posts. I have two quick questions.
Did you remember to put the spacer ring inside the thrust plate, so it isn't pinched?
Did you check the "run out" on the gear after you installed it?

I have concerns about what caused the cam failure and I'm not sure a bolt will fix it.

I would also seriously reconsider that 50 W oil for a street engine. My 4 year old 292 rebuild has been very happy with 5-30 W syn, but these other guys will be up in arms if I recommend that to you. Don't want to start an oil war here. I can only say it works for my 292 with 9.0 LPG pistons, Crane Gold 1.7 rockers, Carter AVS on a Clifford that seems to work well enough, thank you.

'67 GMC 3/4 292 4spd