2.66 low gear vs close ratio

AJ/FormS said
As to figuring the tranny ratios; Drive the car in 2nd gear up to exactly 40mph. Note the exact rpm. Shift into third and drive it back to 40 mph, and now note the new rpm.Stop the car. Take the smaller rpm and divide it by the larger. This will give you the 2-3 %split. Compare to the posts. .
Example: 40mph 2nd = 3063 rpm, and 40 in 3rd = 2233 Then 2233/3063 = 72.9%split. This would be a 2.66 box. The 2.47 box would be 75.7%. the od box would be 59.9%. The rpms will be different depending on the rear gears and which trans is involved. I just threw these rpms out there as an example. The % splits is what tells the story.
The AAR was a short lived series, maybe a couple of years, IDK
There are threads on how to figure out your rear gear.
Thx for dropping in.

That's a great tip AJ! Ok...once I get my speedo cable and tach connected, I'll be doing that. LOL Actually, I'm going to save a link to your post so that I can remember the procedure once I get the previous items squared away.

As for the rear end gear, rambling... I guess that's because those of us wondering about our first gear needs to match it to right rear end gear. The 3.21 in my 8.25 inch rear end seems to drive well. I think first could have some more umph, but maybe I just need to learn to drive it.

I do have a 8.75 inch rear end sitting in the wings waiting to get rebuilt. It currently has a 2.74 gear that I keep wondering how it would drive/accelerate. Would be great on the highway, but not sure if I'll need to be slipping first gear to get it going. Or, should I go with 3.23's for best of both worlds (street/highway).

Again, just rambling... The real question you answered. Thanks!!