Stock strong running means a high compression version from the late 60s or so. I cannot remember a 4bbl factory version in that era.
IMO you'd be better off looking for a converted Magnum, or a built LA.
OOPs; it says "good running" not strong-running, sorry.
OOPs title says "strong", so back to the top,lol., but add;
Or a sucked out 360,lol
I would say by "Strong" the op wants an "up to snuff" motor. I don't think he is looking for a factory 318 4bbl, but just a good, strong running 318 4bbl to replace his 273. Sounds reasonable.
