I have a set of 3.73 gears for sale for a 10 bolt(7.5"). I believe they are Richmond's even though I was told upon buying they were Motive Gears.

$100 + actual shipping to your door.

They do not have the box, but they are still in the original styrofoam...never been installed. Sitting collecting dust for a long time now.

I'm in Southern Indiana...46124 if you want to try to estimate shipping.

 

Do the ring gear say "richmond" and have a diamond?

 

I'll have to check. I was typing that up at work and wasn't able to check them.

Just grabbed them. No, no diamond.

They have GM75373 on them and then some other text etched in the end of them on a shiny ground area that is under the rust inhibitor on them....so its been there since manufacture. Probably a manufacturing date code.

They may be Motive Gears then. The install kit I got from the guy was Motive Gear.

 

Here are some pics of the gears...

First off, a couple of the 3.73s..





The section height(from the flat on the back of the ring gear to the base of the tooth, at a bit of an angle, is about .72-.75". Both sets of gears were the same. Assuming that must be the height of a 3 series gear.

The 4.10s...