No, never as a 170 for production. They were all 225's. And it was not a faulty coolant design, it was folks running straight water. That is what ate the aluminum. Now that would not last as long as an iron block, but no way a "worst" engine. And no mention of an iron slant six as one of the best? They produced well over 15 MILLION slants. Any idea how many 340, 440 or Viper engines?