Okay so heres the deal I am building a 351w this is my first time to build a motor. I all ready have my shortblock. I am currently waiting on a cam, and valve springs so I then I can put it together. Ive only done 2 things since I am on hold till I get my cam. Ive painted my block and put my flywheel in. But here is the question on the timeing chain and the harmonic balancer which do I put on first. Also the other question is what is this part the 3rd picture.

timing pointer

timing chain needs to go on first, then timing cover, then balancer

ok thank you