Some Canadian military vehicles were equipped with a 256 cubic inch GMC (not Chevy) engine. Those engines are extremely scarce south of the border- - - -they have a 270 bore size and a 248 stroke, I believe.
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!