I have a 235 in a 56 Bel Air. It runs great except for one thing. When driving at 55mph+ (1 or 2) rocker/rod will start ticking. By the time I pull over, get my tools out and pop open the cover, it'll be quiet again. Also, how can you tell if they are hydro-lifters or solid? 56 says hydro, but I would like to make sure (engine is painted gray instead of the "Blue Flame" blue).
