My first 69 SS350 was a 4 bolt block with steel crank. I remember this car very well. Check out my story.
Back in 75 my first 69 Camaro was an early built car, SS 350, black, non-vinyl top, standard black interior, red SS stripes, short rear spoiler, 3 speed on the floor, no console or other gauges, 12 bolt 3.55's, 350/300 engine. I pulled the engine to rebuild it and dropped in a built 327. What a dumb A I was, but I didn't know what was what then. When I tore the engine apart it had 4 bolt mains and a steel crank. The block sat in my bedroom closet for months and when I moved to base housing at Dover AFB my memory gets a little foggy here. Not sure what happened to it. I do know that I had a friend remove the 3 speed and install a 4 speed but he kept the 3 speed. I believe it was a saginaw. I know this post is about the 2 or 4 bolt question but the more I find out about my Z the more I remember how much of an idiot I was when I had the SS. Heck I even installed Thrush side pipes that had the louvers in the covers on it. Sounded too much like a corvette, so I removed and sold them. I still have the original chrome aftermarket tailpipes that where on that car too. I think they were Wagners but not sure. If I'm not mistaken it was sold to some kid in Havre Degrace Maryland and totaled shortly after I got orders to go to England. I was really sad when I heard that. I think I have a pic of me, my first wife and my oldest boy standing in front of that car somewhere. I'll look if anyone is interested.