Pacman400

Hello everybody I'm looking for some advice on lockers. I have a 91 d250 with an open diff and let's just say this thing has not traction whatsoever. So any suggestions on lockers? Besides arb airlocker lol I'm not that rich sadly.

freight train

Find a factory LS. For my RC/Cummins conversion I ordered a special LS from Randy's Ring and Pinion. The only problem was that I am using a D71 and that required a special one that doesnt come already assembled. So they were nice enough to already assemble. I already had the rear out of the truck so I took it to a buddy who sets up gear sets and paid him to set the backlash on the gears. Total cost for everything was in the $900 range. I HATE ONE WHEEL WONDERS!!!

jimbo486

Detroit has a locker that supposedly will slip right into the open carrier for about $400. I believe it's clutchless as well. That's what I'm after.

I absolutely understand what you're going through. I can start a turn from a dead stop on moist/wet asphalt, slowly engage the clutch and put a toe on the skinny pedal and the truck goes nowhere. I have to let the truck roll slowly for a second before giving any, very light, throttle.

Pacman400

Jimbo do you happen to have a part number for that locker? And yeah I can be pulling out of our drive way wich is pavement and if it has even a little gravel on it I'm spinning lol

jimbo486

I was wrong. I had sworn it was a Detroit locker that I saw but the only one they have available is the full carrier which would require a ring gear swap.

I think the ones I saw were made by Powertrax. I haven't heard anything about them before.

Powertrax Lock Right


Powertrax No-slip Traction System

jstone44720

I enjoy the True-Trac I put in my D80. If there is one available for your differential it is a solid choice. The money was reasonable, and it only required a new set of carrier bearings and a shim pack to install. I like that is is a gear type which has no plates, springs, or fluid additive to wear out. I have about 2000 miles on it and it has performed as advertised. It is undetectable when I have traction, and both tires spin when I don't. I am running stock size tires, and very mild HP. I have not towed with it.

PapeCAT

Our trucks came with an optional "Power LOK" limited slip. It can be set up with tighter clutch packs to the point of almost become a full spool. I'd go with that setup. Those "lunchbox" stlye lockers that you slip in the spider gears are not very road friendly.

bobva

I have the powertrax lock right in one of my trucks,

For 400 bucks install is a piece of cake,

Sometimes think its better than my LSD. But if you haul a lot of weight IT will make your tires go by-by faster.

bobva

I just reread and see you got a 2WD throw a used LSD rear end in it gear ratio dont matter to you.

For what its worth throw a D60 in there it will hold up.

hounddogks76

I also like the true trac. I have a 2001 dodge that i put one in and it has lasted over 200,000 miles. Been very tough and takes the abuse. Also has good road manners .

92betsy

Does anyone know if a LSD from any D70 will fit in my dually's D70. I might have found a local one for cheap but it's out of a 2000-something so I'm hesitent.

jstone44720

Good to hear. Gives me hope.

sooty

i m a huge fan of the powr lok for the dana diffs, the truth about how well it really locks is in the driving, using brake pressure, the side gears spread forcing pressure on the clutch packs giving close to 100% lock, in normal driving without load their still forgiving on tire wear, if i accelerate through a corner from a stop, the tire will lock and squeal chewing rubber off on dry pavement, not really in my intrest at the steep price of rubber. the real quality of the carrier is visible in that its one solid chunk of metal with no weaknesses, designed for our military, with lots of r and d time, i compare it to anything in performance, ive got 3, front and rear in my jeep pickup, and the original in my truck, they all rock, ive broken a few viewable on my shelf of carnage, but not a powr lok.

TRENDZ

I have a 91 3.07 rear. It has "bolt" style axle shafts. Bolt style axles are 32 spline. If you have "stud" style axles, it will have 35 spline axles.
All the second gen dana 70 axles are bolt/32 spline axles.
I put a second gen dana 70 power loc diff (3.54 gear) into my 91 axle with 3.07 gears and it was a direct bolt in. As long as the axle you remove the diff from has the correct spline count and a gear ratio not higher than 4.10, it will work.

92betsy

Alright thank you, I'll look into that then.