I found a EBU engine in a junk yard that looks brand new and I was wondering if this is a 239 or if it could be a 292. When I say it looks new I mean the inside of the engine is very clean like it was just put together. The cylinder heads have freeze plugs in the front which I have been told is pre 56. If the engine is nothing special are the rocker arm shafts interchangeable with other Yblock engines?



Thanks, Spanky