Question about non OD 833 and rpm range

It’s all in the math.

4.10 X a 1-1 final trans ratio is still 4.10.
4.10 X a .71 OD trans ratio is a 2.91 final drive ratio.

Now proceed to a rpm calculator with your tire size for an approximate rpm at a given speed.

While I like the OD ratio of the MoPar trans, the gear splits IMO are a bit wacky for performance usage. The deep first gear makes any normal use performance ratio rear gear about useless and the rpm drop going into 2nd gear is a big drop.

For basic driving around town, it’s not so bad. A minor annoyance when you first get the new trans & ratios. But you really have to rev it up high to make the second gear shift work for you in any seriously hard acceleration attempt.

Having had this set up before, the move back to the standard 4spd and it’s gear set is a little bit of a bummer when you have that feeling of not having that OD gear to drop rpm’s.

My E body Cuda has 4.10’s on 28 inch tires and will cruise on the Hwy approximately at 3400 in the slow lane. This is somewhere around 65 mph. It’s been a while.

The hardest thing about the old cars is the final drive ratio of 1-1, the gear set and to a smaller degree, the tire size. It can be limiting.