Don't know if this is a racing post or not, but...

We figured it out mathematically some years back in a friend's Scamp: 360, A833OD, 2.76 rear, based on the indicated rpm on the tach. It was over 160mph. Not that I'd test it with todays imported tires, but back then (the 80s) the speed rating on the tires was not nearly as cricital...lol. He worked at a tire shop and what was on our cars was whatever take-offs had more tread than what was on the cars...lol. I know my Newport would go past 150, especially on the plate. That was verified by a CT State Trooper's radar.