My first zero option car! I think
My '64 Dart 170 was just like that '66. No options. I put in a 3.55 rear gear and an overdrive 4spd behind the stock 170. Nothing but a carb off a 225, and a 2" pipe with a thrush muffler. While it was by no means fast, it was fun to drive. The best part is you could drive it flat out 100% of the time. With the overdrive, you could get on the interstate and hold it flat on the floor as long as you want. It would never go over 80mph.
We put it on a dyno once for kicks, and it made a legitimate 56whp and 90ftlbs. We then stuck an electric leaf blower down the throat of the carb and made nearly 61whp!!!
I've still got that engine in my shed. Hell, it powered my brothers '65 Coronet sedan for a couple of years. Never had one problem out of it!
Honestly, I love that little 170! I should build it up and put it in the lightest body I can find!