It looks like the standard 1 1/2 - 2 ton rear end used in a ton of years of both Chevy and GMC trucks. It doesn't have a specific name for that axle type.

What size truck did it come out of?

Jeff


My 1953 Chevrolet
1947.1 Gallery
1972 C-10 1/2 Ton & 1972 C-30 1 Ton