You'll need a set of special stepped-down intake alignment rings to be sure the smaller-diameter 216 intake passages center in the 235 manifold ports. A 216 carburetor will not bolt onto a 235 manifold, and the 235 carb will run lean on a 216.
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!