Dana 60 questions

[GearAddict]

Below copied from my build thread... any help appreciated.

Project today consisted of changing rear gear oil out and inspecting carrier and axels to see what I've got under the cover in the Dana....

Thank god I did this now!!! In the pics below you can see 1 of the 3 ring gear bolts that is 90% unthreaded... I shudder to think what would happen it it worked its way out any further. If I re-torque em to spec without removing the carrier am I ok? I'm going to take it in to do a gear swap soon, but was going to drive it a little between now and then. Should I put any loctite (or similar product) on the threads?

The good news is I had thought I was going to have to change carriers since I have 4.56 gears, I was assuming it was a 5 series carrier, but it looks like someone used a gear shim on a 3 series and since I'm hoping to go with 3.54 gears I should be good. (Please someone more knowledgable tell me I'm interpreting that right?)

Also, I don't know 1 carrier type from another.. Anyone recognize that carrier? Powr-Lok maybe? I'm headed back out to the car shortly to tighten up the ring gear bolts. when I do, I will have to spin the rear wheels and maybe I can get some numbers off the carrier.

View attachment 255694View attachment 255695View attachment 255696View attachment 255697

 

[Hemi Rebel]

Thats a 56 gear set? Look for the number on the ring gear, or count the teeth on both the gears. 4:56 should be 41 and 9. That ring gear looks too thin to be a 4:56. Looks more like a lower numerical set with a 56 and up carrier to me

 

[GearAddict]

I just spun it over and it has 41-9 stamped on it.

- - - Updated - - -

Date coded? 5-25-70

- - - Updated - - -

Thats a 56 gear set? Look for the number on the ring gear, or count the teeth on both the gears. 4:56 should be 41 and 9. That ring gear looks too thin to be a 4:56. Looks more like a lower numerical set with a 56 and up carrier to me

I thought spacers were for the other way around.. thicker gear for 4.10's and 3.54's with the 3 series carrier having a shorter carrier height than the 5 series (4.56 and numerically higher) which take the thinner gears.... run a 4.56 on a 3 series carrier and you need a spacer.... right? This is not my area of expertise, so I might be off, but that it what seemed to make sense from what I have read.

- - - Updated - - -

A little hard to see with the glare.

The ring gear is marked the following:

5-25-70 DANA 30316 A3D72 41-9

The carrier is marked:

26713 X 1-13-70 A

 

[Hemi Rebel]

No. You're right. A 56 and up in a 4 series carrier would be a thin gear for that carrier. The ring gear would get thicker as the ratio gets steeper. They actually make a 56 for the 3 series carrier that is thicker so no spacer is required. Who knew?

 

[NTOLERANCE]

That is a powr-lok. You can tell by the way the sure grip unit unbolts into two pieces

Spacers are used to put the 430 and numerically higher gears into the 4.10 and lower numerical cases

You will not use the spacer for the 3.54 gears
Let me know if you're selling the 4.56 gears and spacer

 

[GearAddict]

That is a powr-lok. You can tell by the way the sure grip unit unbolts into two pieces

Spacers are used to put the 430 and numerically higher gears into the 4.10 and lower numerical cases

You will not use the spacer for the 3.54 gears
Let me know if you're selling the 4.56 gears and spacer

Thanks for the info and yes I'll be selling the gears and spacer after the swap.

 

[Cranky]

As far as I know, Track Locks were not made for the 60 series rear ends back then but they are now and they don't hold a candle to the Power lock and yup, you have the Power Lock. And the Deck heights for the factory carrier is 2.225 for 4.10 and down and 2.410 for 4.56 and up. Deck height is measured from the ring gear mounting face to the face of the bearing fit. Not easy to measure that in the rear end but you can get pretty close by using the cap outside face.....at least you will be able to tell which carrier you have but I think NTOLERANCE nailed it. Btw, I have a 4.88 that's about that thick. Many are used to seeing an 8 3/4 use thick gears when the ratio numbers are high but those only use one carrier. Also, I use Locktite on my ring gear bolts. Been awhile since I've been in a factory stock 60 but they used it on the 8 3/4 rears so I would think it would be the same for the 60's too....
http://www.differentials.com/technical-help/carrier-breaks