You should be able to pressurize to 15psi, shut off air and it should hold that 15psi forever
Attempting to suck up from the trough just toasted your impeller. Always use muffs
I use a local hardware company up in St Pete area for stainless chain- Pinellas fastener. 1/2 the cost of amazon. check your local directory.
anchoring dot com for the line
That is just the EFI manuals
There is also the drive manual, base engine manual, controls manual and cooling system manual
However for torque numbers, just Google SBC fastener torque