I used a toasted oven set to 200 degrees and had the truck outside when it was about 10 degrees (both for about two hours), the balancer slid on 90% of the way then a small hammer and pipe the rest of the way, real simple and easy. Never hit the outer ring, the original GM tooling had fingers to hold the outer ring inline with the center portion.
The engine can safely run 200 degrees and hotter, so heating the balancer will not hurt it. Dusting spray used on computer keyboards and electronic devices can be used to cool the crank, just turn the can upside down, it will freeze it pretty quick.
Joe
