Stock pistons! A.040" overbored 261 block and a 4 3/8" stroke comes out just a bit over 300 cubic inches. The crankpin size on the NASCAR rod is around 1 7/8", which allows a big offset from the original centerline. Total stroke change is 7/16". A standard bore 235 with original pistons, the same stroke increase and rods comes out at 266 cubic inches. The rod is a Carrillo tool steel item with a 6.450" center to center length.
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!