Moser and Yukon 8.75 cases different?

[scampy]

I see moser list a nodular case anybody know if it is different than the yukon nodular and if either case is better than a stock case.I'm going to be getting a case for the rear just wondering if its going to be stronger/better or worse than the stock case.Mid 10 bracket car foot brake and no not going to a dana yet,i know never look back, just wondering about the cases good and bad.

 

[12many]

I see moser list a nodular case anybody know if it is different than the yukon nodular and if either case is better than a stock case.I'm going to be getting a case for the rear just wondering if its going to be stronger/better or worse than the stock case.Mid 10 bracket car foot brake and no not going to a dana yet,i know never look back, just wondering about the cases good and bad.

I was searching over a year ago for a 489 case myself, looked on Amazon along with the other sources. They had two listings: a USA Standard Gear and a Yukon, both listed as nodular. The USA Standard version at the time was about $170 or so on sale at the time. The Yukon was near $300 iirc. I went with the USA, they sent me a Yukon case, had the Y logo cast into it. The case is beefy, nicely machined. I believe breakage would occur in some other part of the rear end before the case would fail. Something tells me they're all cast at some foundry in China, sent here raw, machined here and then packaged accordingly. Just like brake rotors and drums. That doesn't answer your question, but if you could eyeball any of these side by side I bet they're be no noticable difference aside from a casting logo and price.

 

[ph23vo]

they all come from the same place it seems yes.. i have a nodular 3:73 for sale 489 case all new [ran in car 2000 miles was all] from randys 1200 shipped.. usa ifanyone needs one..

 

[oldkimmer]

Doctor Diff sells them. Kim

 

[j par]

I was searching over a year ago for a 489 case myself, looked on Amazon along with the other sources. They had two listings: a USA Standard Gear and a Yukon, both listed as nodular. The USA Standard version at the time was about $170 or so on sale at the time. The Yukon was near $300 iirc. I went with the USA, they sent me a Yukon case, had the Y logo cast into it. The case is beefy, nicely machined. I believe breakage would occur in some other part of the rear end before the case would fail. Something tells me they're all cast at some foundry in China, sent here raw, machined here and then packaged accordingly. Just like brake rotors and drums. That doesn't answer your question, but if you could eyeball any of these side by side I bet they're be no noticable difference aside from a casting logo and price.

When a 489 case goes generally the caps blow off... Ask me how I know and I will answer with pictures...

 

[oldkimmer]

Jpar, I have never had that happen. No ever. Kim

 

[Duane]

Jpar, I have never had that happen. No ever. Kim

I've never had it happen either, but I've seen plenty that did.
Either the caps break or the teeth break.

 

[scampy]

So I went with a "super duty" case from Cass at dr diff that he offered to me when getting the rest of my stuff,should be here early next week

 

[Duane]

So I went with a "super duty" case from Cass at dr diff that he offered to me when getting the rest of my stuff,should be here early next week

 

[scampy]

Is that the one you where pulling out Duane?I hope that was not with an aftermarket hd case.
I've never had a cap failure so made it tough looking into a different/aftermarket type case,most of time was teeth off ring gear.

 

[Duane]

Is that the one you where pulling out Duane?I hope that was not with an aftermarket hd case.
I've never had a cap failure so made it tough looking into a different/aftermarket type case,most of time was teeth off ring gear.

No that was just a random picture I had kicking around on my tablet.
No failures on the one I own. I just wanted to show that it does happen when you get to a certain performance level, or run a brake on them. I remember that even the old Mopar chassis book from Chrysler mentioned that the caps fail and that at a minimum, the left side cap should be upgraded. That's why I have 1 Mark Williams cap for sale.

 

[Duane]

No that was just a random picture I had kicking around on my tablet.
No failures on the one I own. I just wanted to show that it does happen when you get to a certain performance level, or run a brake on them. I remember that even the old Mopar chassis book from Chrysler mentioned that the caps fail and that at a minimum, the left side cap should be upgraded. That's why I have 1 Mark Williams cap for sale.

I also wanted to say imho that the heavy duty cases are probably of no benefit as it is not the case that is the weak spot, it is the caps and the banjo design of the axle that makes that fail at a certain torque input.

 

[scampy]

I also wanted to say imho that the heavy duty cases are probably of no benefit as it is not the case that is the weak spot, it is the caps and the banjo design of the axle that makes that fail at a certain torque input.

This case has upgraded caps and the billet adjusters,this is not the std yukon case,its something Cass had made,something about ford 9" 3.25 caps machined,he could tell more.Cass has always dealt straight so I'm trusting this will be good.I've run 2 seasons on the stock case no issues,going to pull it and keep for spare plus get to take a better look at it after 2 seasons,I figure i'm getting border line 1.42 60' 3350lbs

 

[Duane]

This case has upgraded caps and the billet adjusters,this is not the std yukon case,its something Cass had made,something about ford 9" 3.25 caps machined,he could tell more.Cass has always dealt straight so I'm trusting this will be good.I've run 2 seasons on the stock case no issues,going to pull it and keep for spare plus get to take a better look at it after 2 seasons,I figure i'm getting border line 1.42 60' 3350lbs

I would being going to a Dana with those numbers imho. But you already know that.

 

[furrystump]

I have seen the adjusters knocked out of a couple. Not mine, but have seen it, still a cap “failure” the only thing to watch for is some aftermarket cases have different thread pitches on the adjusters. Mark Williams makes a billet adjuster that works in a stock case.