A/C on 170 Slant 6

In at least some of the years the 170 was available—possibly all of them—A/C was not offered with that motor; you had to have the 225 at minimum.

A 170 with 2.76 gears in a lightweight '62 Valiant wouldn't be diesel-Wabbit slow (0-60 maybe sometime later this month) but it would be very slow. Add the weight of the A/C system and turn it on, and…well…0-60 maybe sometime later this week.