72 318 Scamp. Low oil pressure 1 minute after startup.

Here is the latest inspection pics. More silicone! This time in the water passage of the block.
Camshaft is not stock. It's pretty big as a matter of fact. It is a Bug Muther Thumper! I looked up the grind from the number on the back of the cam.

With the flat top pistons and the heads that it has 8 really have no idea what the compression ratio currently is. Thinking about changing the cam to something like a XE262? What do you guys think?
Here are some pics.

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