Custom billet Dodge V6 crankshaft from Dodge Nascar team. Was part of R&D project from the 90's. Was made for 3.9L V6. The crank was cleaned & magged and the stroke was verified @ 3.625" The rest of the spec's are on the card in pictures. I do not have any other info other than it was real expensive to have made at the time. Free Shipping lower 48 states