im about to start my engine build and need help finding the right belt i will need. my mods include 2.8 pulley, ATI GM Ecotec Super Damper, phenolic intake spacer, over sized tensioner pulley, and a few other things that arnt really relevant to belt length

 

Welcome to Cobalt land, Once you enter there's no escape.

 

is the damper an overdrive, underdrive or stock size? id guess with the intake spacer, oversized tensioner pulley, with a stock size or overdrive damper your going to need the stock length belt.

 

its overdrive damper

 

Stock length belt for sure. It's possible it might be too short also though. You may have to go back to a stock tensioner pulley.