Is this a bad idea?

There were many Aspens and Volares factory equipped with the 833 OD. It was also used in Feather Dusters and Dart Lites. I guarantee you those cars did not have steep gears.

In the early 80s I worked on a Volare station wagon with a 225 /6 and the floor shift OD. it was a coworkers and he bought it used CHEAP. It had veen used as a delivery vehicle, and only about 3 yrs old but had 100k on the clock. He only bought it because I agreed to fix it. It was parked in a garage downtown and driving it the 20 miles home from work, it wouldn't go over 35-40 mph. Compression check showed it had 2 dead cylinders so I yanked the head, sent it out for a valve job, (2 burned exhaust valves), did a 4 wheel brake job, 4 shocks, oil, grease, and rebuilt the 2 barrel BBD Carter carb.

Drove it back to work about 10 days later and it was like a new car, a real pleadure to drive. For awhile, every time we passed in the halls at work he would thank me and shake my hand.

3.21 with OD? DO IT!!! Not everyone builds a car for maximum acceleration.

It's not always about max acceleration. It's about getting the engine in it's most efficient operating power band. Lugging along at 1500 RPM at 70 MPH ain't it.

Too many people think getting the engine at the lowest possible RPM at cruise speed is the way to go. It's not. It's all about the engine being in its power band......or just at the beginning. Too low a cruise RPM and the first head wind or tiny hill and you're downshifting. That's not very efficient. Did the factories do it? Yup. Was it right? No way for every application. DO the math. Your final drive ratio with an 833 OD and 4.10 gears is a 2.99. With a 3.21 gear your final ratio is 2.34. That's gettin stupid. Max acceleration hasn't a thing to do with what I'm talking about here. It's about efficiency.