This is a 1985 Chevrolet C30 1 ton Dually. It has a 454 V8 with a Quadrajet 4bbl carburetor, 3 speed manual transmission with granny gear, 10 1/2 foot bed.. May 5, 2015 We've seen some outstanding custom builds of classic Chevy trucks around here, but this diesel powered dually just may be one of the coolest.... Shop for all Chevrolet C30 tires by year, size, and trim to find the best tires for your vehicle. All tires ship direct, fast, and free to your home or the local installation... 877e9