AndyF has a 400 and 440 stroker piston selection chart in the tech section that is helpful.
I built a 505" based 440 and it works really well. That said, I would probably use the shorter, stiffer 400 block if I were to do it again and start from scratch. It helps with space if you are dumping it in a A body, too!
You won't go wrong with either choice IMO.
'63 Dodge 330
11.19 @ 121 mph
Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs.
10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.
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