What is the cylinder bore size for 1986 Chevy S10?
There's no single cylinder bore size for a 1986 Chevy S10. The bore size depends entirely on the engine that was installed. The S10 could have come with several different engines, each with a different bore. To find the correct bore size, you must know the engine's displacement (e.g., 2.0L, 2.5L, 2.8L, 4.3L).