Camshaft Position Sensor ‘B’ Circuit Intermittent (Bank 2)?

So can you confirm the engine has 16k on it also what is the code number? This code can come up due to a timing chain issue FYI. Does the engine make a slight rattle sounds at idle? if so the timing chain or guides can be the issue. Here is the location of the camshaft sensor for bank 2 which is on the right side (passengers side) of the engine on the rear of the cylinder head, clean the codes once the sensors have been replaced. Check out the images (below). Let us know how it goes

Yes, it has a tick at idle. And rough/no starts. I just found out that I have the FA 557 voodoo crate engine from ford. So actually less than 16,000 miles. The codes that are popping up are P1450 and P0399.

Okay, the P0399 code, which is the camshaft position sensor “B” on Bank 2. On these engines, the cam sensors are mounted at the rear/backside of the cylinder head near the valve cover area, so for P0399 you want the passenger-side rear of the head.

P1450, is usually a separate EVAP purge - fuel tank vacuum bleed issue. I would remove the purge valve and see if you can blow through it and if so it is bad and needs to be replaced. Please upload a short video in your response of the engine noise from under the hood, so I can see what's going on.