I just gave John a Rochester carb that I removed from a 261 engine, one that was used in a 1959 Chevy dump truck. The carb appeared to be the original one the truck was built with. IIRC, Rochester Bs for the 261 had a slightly larger venturi, and possibly a little bigger throttle plate than the one used on 235s. He should be posting a detailed tech tip on his evaluation of that carb soon.
Jerry


"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!