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View Full Version : Stroker crank in sbc 400 block


t341
09-08-2020, 04:48 PM
Have a GM 509casting 400 block. Has splayed 4bolt caps. How big of stroke crank will fit in this block? I'm sure some clearancing will have to be done. 4.00 stroke, 4.125 stroke, or have to think smaller 3.875?