[Steve Barcak]

I may have missed some things you wrote but, I see many things over looked pertaining specifically to a Pontiac build.
in no order-
1. you did not mention how important it is to remember to install the rear oil galley plug that hides next to the distributor. A first time Pontiac builder would easily overlook this.
2. you did not mention the importance of installing the dip stick tube prior to assembly. Perhaps, it was never removed but, many shops and builders remove them during the cleaning process. I do not know how many people over the years have told me they forgot this after they installed the pan.
3. Before installing the oil pump, I like to install the distributor so the drive shaft doesn't move around while you are turning the block over while on the stand.
4.I like to check to make sure the cam bearings are installed properly before I start assembly. that is done by looking up the main oil feed holes to see if the hole in the bearing is in the right place.
5. next, I always do a test fit of the cam prior to any assembly incase a cam bearing was put in at an angle.
6. it is easy for a novice to forget to install the small expansion plug on the back side next to the dist.
7. In the picture of the guy putting in a piston. I find it wise to use one hand to hold the ring compressor tight against the deck of the block. Otherwise, it is easy for a ring to pop out if the tool does not stay flat. It is important not to chip a ring.
8. You did not add the important cooling holes in the deck
9. did you check piston to wall clearance? I would never consider assembling an engine with aftermarket pistons and not do that. In adequate piston to wall can lead to overheating and black death.

10. I know different people like to do things different. I see nothing wrong with the way you check for valve clearance but, it is much easier, faster and less messy to not use the clay. With light duty helper springs, you can simply push down on the end of the rocker arm and feel how much room there is as you rotate the engine.

11. also, when installing pistons/rods, the bearing has a chamfer on one side. That is the side that goes toward the outside of the jounal. Also, the bevels/grooves on the rods always match the caps when installing.
Best you with your build.
Steve