Gear ratio suggestions

[fj5gtx]

The 8-3/4 version quality is supposedly bad. Dr. Diff won't sell them anymore, see their website.

 

[RT SE 440]

The 8-3/4 version quality is supposedly bad. Dr. Diff won't sell them anymore, see their website.
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dam now I'm shattered i got nothing but good reviews from my diff builder he's installed hundreds of them but he didn't specify 8.75

 

[fj5gtx]

dam now I'm shattered i got nothing but good reviews from my diff builder he's installed hundreds of them but he didn't specify 8.75

Hard to find anyone complaining, maybe you'll not have issues. Here is a thread from forabodiesonly, one reply talking more about a problem with them.
Sure Grip unit feels much better than Eaton TruTrac did..

Dr Diff sells a competing unit, 6 rather than 4 worm gears. Maybe check that out, it sure looks unique... I thought it was just a spool from the picture.

 

[Dan64]

I've put a couple of them in my cars over the last 10 years or so, never a problem at all. They all work perfectly.

 

[41indian]

513s with a GearStar LOL

 

[old guys rule]

For a limited slip setup I am partial to the factory style 68 and older Powerlok differential that has clutch plates, Dr Diff is who I would get a hold of on part 8 3/4 parts. They can be setup very tight or loose depending on your preference.

Mopar 8 3/4" (8.75) Clutch Type Sure-Grip ("Powr-lok")

What is the difference between tight and loose clutches?

 

[kramer]

They sell both "Smooth" and "Aggressive" clutch rebuild kits for the Dana 44 and the 8 3/4 Powerlok setups which the internals are basically the same except for some of the Dana 44's have a 19 spline side gear instead of the more common 30 spine setup.

 

[RT SE 440]

Lost sleep over the weekend thinking the worst about this TrueTrac & all for nothing.I spoke to my diff mechanic today and he only reassured me these units are the bee's knee's and that he's never had one complaint or rework since he's been installing them except one which ended up being a bad wheel bearing and not the TrueTrac.Which comes to prove kids never believe everything you read on the internet Lol