360 build.

trigger_andy said
Ok so maybe get a new Cam instead of risking using an old 340 one?

Any particular one spring to mind?

Are you sure there 2.92 gears?
What size tire?
What’s the goal?
Spirited driver?

Wyrmrider said
or do a minimum hone and new rings
new pistons without a bore job has been done to get the compression up
use the KB quench dome pistons especially made for LA open chamber heads

The KB-107 @ zero deck and a .040 gasket will come in at (or right close to a) 9.8-1 ratio. A small cam can cause detonation issues. A thicker head gasket may have to be employed or skip the block decking to zero.

A dome piston will make matters worse.

some like the stock 340 cam which is even longer and lower lift- what's with that?- long life for warranty early years and emissions later years

There is no way you can call the 340 cam an emissions cam. Stop it already. Really! Just stop telling lies. Stop whining about what was and the reasons behind it. It was what it was and that’s it.
The engine still produced reasonable power with excellent drivability.