Cost to rebuild & change rear end gear ?

Can anyone give me a ballpark cost to have my '95 RMW rearend rebuilt and change gear to a 3.42. From 2.93?
It works fine, hoping to upgrade for towing a Travel trailer(approx 3200 lbs.) Thanks for any insight you may offer.
CC

Clancy Courtney wrote:

Can anyone give me a ballpark cost to have my '95 RMW rearend rebuilt and change gear to a 3.42. From 2.93?
It works fine, hoping to upgrade for towing a Travel trailer(approx 3200 lbs.) Thanks for any insight you may offer.
CC

I had the ring and pinion gear changed from 3.23 to 3.73:1 to tow my 1958 Airstream. It was the best modification for towing. It pulls the mountain passes in the west with no trouble. Think about using the 3.73. My trailer weighs 3000 loaded.

Here is the breakdown for parts costs.
GM OEM 3.73 Ring and Pinion $305.
Master install kit 118.
2 x Axel bearings and seals 43.
Gear oil 40.
GM Limited Slip additive 11.
8.6 GM Reluctor gear 18 tooth 18.
Labor 480.

Dick

CC, if you're anywhere near Metro Detroit, you can get it done at Drive Train Specialists on Groesbeck, just south of I-696. Last time I was there, full rebuild with a R+P change was $750.

Get an aftermarket POSI while you are at it.

Thanks to each of you for your valued input.
CC

Motive 4.10s: $140 from gearsareus.com (ebay)
Bearing install kit: $80 from local truck driveline shop
Install labour: $250

What are the pros & cons of doing this?
Thanks

Pros:
- quicker acceleration
- less gear hunting on hills at highway speed
- increased towing capacity

Cons:
- install cost
- decreased mpg

Mine went from 3.08 to 3.42 Notably better accekleration. according to the butt-o-meter.

`Wasn't there something about the 2.93 pumpkin being different than the higher ratio units?

.. and go posi

No, 2.93s are still a 3 series carrier. 2.56 use a 2 series carrier.

Thanks for the correction.

Dave

Clancy Courtney wrote:

Thanks to each of you for your valued input.
CC

I have a 3.23:1 Ring and pinion That I took out of my OCC when I replaced it with 3.73 gears. It is the original with 73K. It is quiet but I wanted more pulling power. If you are interested I will sell it to you cheap, plus shipping.
PM me if you are interested.
Dick

3.73:1 is what I would do and yes a posi is suggested.

BigBlackBeaSSt wrote:

3.73:1 is what I would do and yes a posi is suggested.  

I agree. 3.73:1 works great for my needs. And I do have Posi. If anyone needs a 3.23 PM me for details.

Again thanks, I've found a shop that does only differential work that I am going to use to install a 3.73. Likely around $900.

Clancy Courtney wrote:

Again thanks,  I've found a shop that does only differential work that I am going to use to install a 3.73. Likely around $900.

Good choice Clancy. I will make towing easy.
Dick