I had a stock '55 6500,with 9:00X20:00's,a 261,with a SM420 trans. Top speed was 55. I believe Mike B.'s truck does achieve 65,since he's mentioned that fact in several posts. But,yeah,I'd think that would be "winding up pretty good",in an otherwise stock drivetrain.
Last edited by wetwilly5757; 02/04/2016 3:17 AM.