'85 1/2 Ton Squarebody 400 SBC build?
I have a real slick original 85 Silverado c10, 305, TH350, 273 rear end. The truck has a 104,000 miles but runs perfect and gets 17-18 mpg. I'm thinking of building a 400 small bock to have ready to swap into it in the future. I would like to keep it as original as possible, but have the guts to pull a car trailer and decent economy. Any suggestions on the build?