I think he was asking if a 250 would fit. FWIW, the crankshaft length on 235, 250 and 261 engines are the same length, just about an inch longer than a 216. So length would work. As far as motor mounts, etc. I have no idea.
Kevin 1951 Chevy 3100 work truck Follow this saga in Project Journal Photos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together.