The Stovebolt Site Forums The Parking Lot Big Bolts exhaust pipe question...

We're restoring a 1948 gmc 1 1/2 ton with a 248 engine. There is no exhaust on it. We need to hook up an exhaust pipe but i'm not sure if the flange/coupler/heat riser valve(what's it called?) is the same on all engines, or if there's one specific to the 248 manifold. (it's the original manifold on a '51 engine)

And does anyone know if this part's common enough for Napa or someone to have?

Any good exhaust shop should have all different sizes available and likely NAPA too. I'd bet that all 216, 228, 235 and 248 engines used the same size.

I think my 216 is either 1 7/8 or 2". I took it to the local exhaust guy that does older stuff and he did a great job. I asked him how long it would take to get the parts and he said that he would have it done in a couple of hours. He had everything on hand. One thing though, he used a doughnut gasket and the truck previously had been put together with a flat gasket. I think that his way was right.