The way to identify it for sure is to pull the cylinder head and measure the bore size. A 261 will have a 3 3/4" bore and small holes drilled beside the cylinders on top of the block with corresponding holes in the cylinder head. A 235 will have a 3 9/16" bore, and will not have the steam holes.
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
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