[sagacious]

how important is a good harmonic balancer? I have the old one off of my 30 year old block... would it be safe to use it over again on the new block in building? it's a much higher performance engine. I've never looked into the workings of a balancer, so i dont quite understand its importance altogether. someone shed some light on this one for me, lemme know the importance of a good/new balancer. thanks.