I have a late 80's early 90's Chevy 350 with automatic trans for 4x4 came out of a K-5 blazer for sale. Look at the pics. It ran good when pulled. It has all the wiring. It has over 100,000 miles on it but was well worth pulling. It has a fuel injection carburetor / air horn hence the wiring. GM, Chevrolet, GMC, two bolt, four bolt, hot rod, dirt, mud, fun, truck, Blazer,