Quality

They also last 87.7 % longer. ...Per those DOT numbers.
I bet. Modern cars go more miles because of FI (computer) and and better machining tolerances.
A HS kid in 1966 or 69 back in the day and get a job after school and Sat and pay for a new 66 or 69 car. I mean a 69 Roadrunner not a VW bug.
If we start any discussion about the value of a dollar today vs back in '69 this general discussion thread will get shut down because we would be somehow talking politics, SO WE WON"T GO THERE!!!!:BangHead: I can discuss 1969 as I was a senior in '66 and worked 25 hour a week after class and on Sat.
Edit: I admit those cars of carb days on average probably got 100,000 mi. or so, then thins started to happening to the engine. People wanted to be able to trade their ar every few years That was a big deal back then.