Background story:
I have a 1985 C10 Scottsdale P/U that I just finished equipping with a 400 SBC from a 1975 (or 76?) Caprice Classic Convertable. The original 305 hydro-locked after...yadda, yadda, yadda...long embarrassing story. Anyway, while putting in the 400 (it's a SBC; how hard could it...