OK so I pulled the balancer apart. Is there any way to press back together? the rubber is ok. If not can I get a GM balancer at auto zone? does any one know the replacement GM part?
no, it's destroyed.
"3826280 DAMPER Crankshaft pulley"
is the part - that is a GM number as well as the OMC number
OMC reused GM's part numbers for main engine parts.
I'd go shopping at a good auto parts store like NAPA or CarQuest though, or a GM dealership. I bought a waterpump pulley for my engine from the Chevy dealer, $25 was pretty reasonable.