[Guitarmaker]

Sweet! Good info. Do you have the Fel-Pro part numbers for the various thickness head gaskets? I live in an area that rarely sees very hot temps(80f is HOT around here; we never see the 90s), and I'm used to running premium(that's all the GN will run on), so a slightly high comp.ratio works well for me, especially if I don't need to spend a thing to get it(IE: choose the right gasket).

I'm hoping it's fine inside; the engine isn't the original to the truck, so we don't know the actual mileage, nor how well it was maintained. I'll see what I have next summer, as the truck is now buried in snow in a field and it's too cold to go turning wrenches out there anyhow. But as I read more on the vortec, it appears it didn't wear as much as the old small blocks did, and my own 4.3 vortec shows me the same, too; at 248 clicks, it still doesn't burn or leak a drop of oil between oil changes, and when it runs right, it's just about as strong a puller today as it was new. Bodes well for the 350!