It's possible to offset-grind a 235 crank to the same stroke as a 292, not put the 292 crank in the 235 block. 235's and 261's have the same stroke- - - - -the cubic inch difference is in the bore size.
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!