Question about my pully and H balancer

[Isaiah92260]

Howdy! I know I post a lot, I'm new to chevy's and I still need to buy a Shop manual, but I have a serious question about my crank and H balanced :/ recently a Hot Rod guy was looking at why my pully had so much slack, and we saw that you could literally pull the whole damn pulley out if the radiator wasn't in the way!! D: I know I know, you guys are gonna say "what the hell! Stop driving " or "fix it" that's why I drive an old truck every day to work, cuz I can't afford a new one lol!! And plus I just like driving old cars, but, the old guy was telling me that I need the washer and nut for the pulley, after talking the the previous owner, my 67 I6 was a pressed in pully style, there was never a bolt and washer! Anyways, what do I need to do? I'm sure I'm gonna need new harmonic balanced and pulley? Or just the balanced? And how do I do it? Do I need to pull out my aluminum radiator for space to work? Obviously my motor has over 200,000 miles on it, maybe even 3.... I wish I could just send it in to get a total rebuild. I'd love to drive this truck every day with no problem and have a reliable motor. Besides all the issues I ask about, it's true what everyone tells me, these I6 motors run FOREVER! It's like driving a tank!