With pistons for a Ford 223 cubic inch six, and a stroke increase to 4 1/8 inches, that 235 can become a 255 cubic inch engine. It requires a little creative machining, but the cost isn't a lot more than a full rebuild to stock dimensions. The 261 can approach 300 cubic inches with similar modifications.
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!