My engine didn't come with the gun-drilled bolt you describe here.
How to Assemble the Front of a Small Block Now to find one.
Seriously, I get more out of your articles than the book I wasted $30 on. I checked it to see about that special bolt, and it skips from sticking the cam in the block to putting the timing gear on. Apparently the cam retainer just jumped on there when he wasn't looking or something.