Stock AD wheels had very little to no offset. See the attached snip from the 1951 Truck Vehicle Info Kit.
The 16" wheels were 4.5" wide between the bead seats, so about 5.5" overall width. The offset was 9/16", so the rear of the rim sits about 3.3 inches behind the wheel mounting surface of the hub.
An 8 inch wide wheel will likely stick roughly 4 inches behind the wheel mounting surface, assuming that it has zero offset. I couldn't find similar wheel info for the 70-80 Blazers so don't know the actual offset.
Kevin 1951 Chevy 3100 work truck Follow this saga in Project Journal Photos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together.
