Which diff?

[chicane67]

...Except for the fact that EATON specifically recommends that you not run synthetic... as well as many builders like myself, will tell you the very same thing... I would just run the friction modifier.



Of the components mentioned... I would run the axles from Toms Differentials ( tomsdifferentials.com ) if you wanted to retain the c-clip function. The only thing that you will need to pay close attention to is the axle end play. You will want to keep this to no more than 0.005" (0.127mm).

[kenhaw]

...Except for the fact that EATON specifically recommends that you not run synthetic... as well as many builders like myself, will tell you the very same thing... I would just run the friction modifier.


Of the components mentioned... I would run the axles from Toms Differentials ( tomsdifferentials.com ) if you wanted to retain the c-clip function. The only thing that you will need to pay close attention to is the axle end play. You will want to keep this to no more than 0.005" (0.127mm).

So you would run normal non synthetic oil and the add friction modifier?

Well I am sure that there is more play than that in the axles now. If I want to change into non C-clip axles what will that involve?

Thax for the feedback.

Kenneth

[chicane67]

So you would run normal non synthetic oil and the add friction modifier?

Well I am sure that there is more play than that in the axles now. If I want to change into non C-clip axles what will that involve?

Thax for the feedback.

Kenneth

Yes... a non-synthetic with the addition of friction modifier. I would also recommend using a straight weight 90 or a multi viscosity 90-140... and either the GM or Ford friction modifier. I personally believe that the Ford stuff is the ticket... but there's nothing wrong with the GM or RedLine stuff either.

As for your axle end play... I too believe that you most likely have more than three times that number currently. There are a few ways to combat this issue... from shimming the clutch pack and thicker c-clips... to installing an axle with press-on bearing's, like that of the kits available from Toms Differential and others.

The inhearent safety gained from a press-on style axle bearing is always good... but, the cost and effort envolved can be more than some want to afford. But... this would be the better solution as you gain many positives from the modification. What it takes to do this is that the housing will have to be removed, the ends cut off, the new ends jigged onto the housing, weld them up and then straighten the housing. Next will be the axles... which only requires a 'overall' measurement for the axle length and the proper retainer to work with whatever brake system you are going to use.

The old school way to fix the axle end play is to re-shim the clutch pack and to use thicker c-clips. But you really need a good differential guy that really knows his proverbial sh*t so that it gets done correctly. This is one component that you dont want to screw up and that you dont want to build a second time from cutting corners.

[minendrews68]

KENHAW, Please don't listen to Chicane!!!!! Unfortunately, he does not know what he is talking about! That rearend is one of Chevrolet's worst!!. If you would like to give it to me I will pay shipping to get it here. I don't always do things like this but I am going to make an exception this time. Please don't put that rear end under your car.......Let me put it under mine!.. All jokes aside Chicane is once again right on the money. Listen to him. By the way GOOD find. I wish I had one.

gotch'a Chi

Carl