I have a 1964 chevy C10 with a 283 in it. Im not sure if its the original engine but from what I've found on the blocks casting numbers it very well can be the original but thats not really what my question is about. What I am curious about is the fact that the 283 in the truck currently doesn't have a harmonic balancer. Im in the process of replacing the 283 with a newly rebuilt 327 long block I just purchased and Im going to go to the parts store and purchase a harmonic balancer for the new 327 since the 283 didn't have one. Does anyone know why it wouldn't have had one. Unfortunately my truck was bought at a repo auction so I don't have the leisure of asking the old owner what or why but from what I've gathered so far he did some pretty screwy stuff to this truck so i'm trying to figure if the missing harmonic balancer was stock or something he did. And to clarify that YES I should purchase one to put on the new motor?