Is this a bad idea?

rumblefish360 said

Gear ratio X’s OD ratio = new ratio
3.21 X .71 (If that is your OD ratio) = 2.279 (2.28 rounded)
4.10 X .71 = 2.91.

Click to expand...

I am faced with the same dilemma of OD versus non OD, but my car has a 2.xx:1 differential ratio, 13" tires, and a 273 V8. Since I have all the parts, I will install the non-OD 833 first instead of the OEM 3 speed. If I am not satisfied with the 833, then I will install the 833OD.

In terms of engine rpm, going 70 mph on the highway was about 2,000 rpm in my Honda recently; nice and relaxed. I intend to do more highway driving in the Dart than local roads, but I still want the car to be able to move with some gutso on my way to the highway.