How difficult to rebuild 489

[Fern]

I have a 489 sure grip cone type (I believe) with 355 gears. It has a lot of slop. Is it better to buy a new complete center chuck and jut bolt it in or have it rebuilt? I like the 355 gears. Is there a good place to get it rebuilt, since my mechanic won't do it.

[usraptor]

If you lived in Utah, I have a place that could rebuild it.    If you can't find anything local and are interested in shipping it Utah, PM me and I'll give you the shops info. 

[73_Cuda_4_Me]

I ordered a complete center section with Eaton TT from here last week... Good selection of gearing and yoke sizes, and reasonable pricing too...

https://www.quickperformance.com/Chrysler-8-34-Complete-Center-Section-3rd-Member-489-Case_p_21467.html

[7212Mopar]

Check Dr. Diff. I got a full center section with the SureTrac diff with a new 489 case a few years back. Torson design same as the Eaton TruTrac except more helical gears. The price seems to be cheaper. Two tire tread marks when you step on the gas pedal. No funny noises driving straight or making turns.

[HP2]

Rebuilding a 489 isn't difficult at all if you have the tools and know how to do it. However, there is a  majority of us on here that don't have the know how to do this. If you haven't done it before, I wouldn't recommend it.

Buying a whole new third member with gears and Sure Grip is going to set you back $1300 plus shipping, and these aren't light. Depending on  how far you want to go with a rebuild, I don't know if its worth it to rebuild your existing unit.

Surely there are any number of reputable driveline service shops in your part of MA that you could check with.

[Fern]

I will contact Dr. DIFF to see if they sell the entire 489. If not, then Eaton.
Thanks for all the replies.

[73chalngr]

If you have a local drag strip . Someone near by has been doing it for years. I live near maple grove raceway . Asked around found a guy rebuilt mine for 950 .

[Dakota]

Rebuilding a 489 isn't difficult at all if you have the tools and know how to do it. However, there is a  majority of us on here that don't have the know how to do this. If you haven't done it before, I wouldn't recommend it.

I went through a bunch of YouTube videos and websites that I thought had prepared me well enough to rebuild my 489 (first timer).   I don't think I drove more than 50 miles before it grenaded, which gave me the "opportunity" to pay a for a whole new set of gears and bearings along with the labor cost for for a professional installation.    My 2 cents is that you'll be far better off buying a complete unit from someone like Dr Diff. 

[HP2]

I have tried to rebuild nearly everything in my cars over the years. Two things I won't touch any more, gear set-ups and automatic transmissions. With some tutoring, I could probably do these but honestly its not worth the effort to learn them and deal with the learning curve of how to optimize them. I'll just pay for the service.

[Mopar5]

Setting up rear end takes a lot of time if you haven't done it before. A lot of time doing research a lot of time building a jig to hold the diff  You need a press for the bearings a clamshell bearing separator  an inch pound torque wrench a  spanner wrench for the adjusters 1 will work but 2 is better . Major time for a newbie to get the pinion depth right by adding and subtracting shims.But that being said if it works you will have an awesome sense of accomplishment.Thats how you learn new things.Someone has to do it.