I need a new harmonic balancer, cause my old one is coming apart at the rubber part.
I like to upgrade instead of just buying another stock one, but don't feel like spending the 399 for the ATI one.
Any other options? Underdrive pulleys? do those use the stock balancer?
Thanks!

 

someone correct me if I'm way out in left here, but isn't the stock unit just a crank pulley, or is it a balancer too.

Also, as far as I know, the ATI is pretty much your only option.

 

According to Jason Cromer (the GM Parts guy) it is listed as the harmonic balancer.

 

My bad, thanks for the info.

 

Get the ASP underdrive pulley/damper, part # 945100. It has an integrated damper so you replace your entire stock pulley setup.

Part # 945103 also includes an underdrive alternator pulley.