'71 393" 6-pack 4-speed Duster Twister

72360strkrdemon said
how did you get 393 cu in? like what did you stroke it from?

"Bored and stroked 393 cu in, Mopar Performance billet stroker"

You'll have to call Mark to get the exact bore and stroke specs.
I think that the crank was sourced from their hard-core Sprint Car
motor parts program (it wasn't cheap).