I picked up the gasket and "O" ring set from the local Cheby dealer. To be sure I even gave him the VIN and we looked for any possible substitutes or variations. The gasket looks just like the one from the FelPro kit (not having that set to compare sizes, though). The gasket is a wide, flat total circle, about 3" in diameter, and with the bolt holes.
Fine, but the adapter piece has a large section cut out that I thought was made to fit the machined block. I assumed the gasket had to match that shape with the "bite" out of it. But the parts guy (not a service rep or tech) told me that the gasket didn't have to be "notched", but that it could fit flat all the way into the flat machined surface of the block. Since my son did the R&R I never saw the block where the adapter bolted on.
He's not available to install the new GM gasket/ring so I'm gonna do it...but first I want to make sure it's ok for the FULL gasket to be used.
If anyone has a pic of where the adapter bolts to the block it would sure help.
