Does anyone run a powertrax?

[Pont406]

I am changing rear gears. For now I will keep it open diff. Next week I will order a powertrax unit http://store.summitracing.com/partde...5&autoview=sku. Who is running one and how do you like it? I might get 15X10 rally wheels for the back. I have 2 years old tires from my car. I think tires will clear with the right backspace. I am planing to visit a dodge boy in 2-3 weeks.

[70GMCer]

I have one setting on the shelf in the garage ready to go in. There's been some comments on these. Most complaints I hear is the clicking noise it sometimes makes when turning. The way I see it, if you have a loud exhaust, won't matter anyway. I still plan on installing mine as soon as I finish the disk brake conversion.

[ed2552]

What gears are you putting in?

[chevguy7]

I have heard some complaints too. One of my friends has one in his '71 nova and likes it. How durable are they?

[68 short step]

im useing the no-slip version in my 68.... i have yet to drive my 68, and hear how loud/quiet it is, but it is suspose to handle 450HP...

[1971LT1SWBPOSI373]

I rebuilt the differential in my 71 a few years ago and put in a PowerTrax with new 3:73 gears and I really like it. Although the truck has been driven very little because I haven't finished working on it yet, I am pleased with the end result. I can verify the clicking can be a little loud at times but I bet it will quiet down once the unit wears in a little. I think it works better than a posi does.... You won't be dissapointed for the money... It's a great upgrade for any truck provided it isn't driven on ice!!!!

[cruiserman]

Originally Posted by 70GMCer

Most complaints I hear is the clicking noise it sometimes makes when turning.

If it doesn't click, something is broken .

[straitnate14]

I have one and at first it would unlock but I when I looked inside it was the thrust washers. they where worn out and to thin so when I put new ones in witch are a pita to find I got 10 extra sets I had to order 20 washers to get the dealership to get them and I ended up takind a 45 min trip to get so a a diffrent dealer because I couldent wait if anyone needs them, but after I got the new set in it works great

[68 short step]

Originally Posted by straitnate14

I have one and at first it would unlock but I when I looked inside it was the thrust washers. they where worn out and to thin so when I put new ones in witch are a pita to find I got 10 extra sets I had to order 20 washers to get the dealership to get them and I ended up takind a 45 min trip to get so a a diffrent dealer because I couldent wait if anyone needs them, but after I got the new set in it works great

[Lated]

Will one of these work in my stock 12-bolt. I'm not sure if the "Axle Model: GM 8.875 in., truck" under the application tab on Summit was the same as a truck 12-bolt which is all I've ever heard it referred to as.

[duane67c-10]

i have a powertrax in my chevelle, mine only clicks once when you put it in drive and then when you turn, but other than that i love it!

[jlaird]

Originally Posted by Lated

Will one of these work in my stock 12-bolt. I'm not sure if the "Axle Model: GM 8.875 in., truck" under the application tab on Summit was the same as a truck 12-bolt which is all I've ever heard it referred to as.

yes, our truck 12 bolts are 8.875"

In making the decision, just realize you can get an eaton posi for $364 bucks at summit. The will match the lowest price on the net which is here: http://www.rearendparts.com/home.php?cat=149

[chevguy7]

How easy would it be to swap in the eaton posi compared to a powertrax?

[Lated]

Sorry for the thread hijack but what's the difference between the 3 and 4 series carriers?

[redhead69]

I broke my no-slip unit on the first pass it made down the track. Im sending the unit into to richmond for a warranty inspection and hope its covered. If they dont refund me and just exchange with a new unit i will post it up for cheap. I really think I had a bad unit because im right under 400 hp and was professionally installed (which isnt saying much). Anyway I went to a mini spool because I had one laying around.

One thing to consider, and this is what some guys at the track were telling me and not my experience, but when you pull into a box and do your burn out.. sometimes only one side will lock up, then you go up to the light with 1 wet tire and when you launch the wet tire will lock and spin. Just my experience with it and will keep you all informed about the warranty deal so we know how richmond is about that

eric

[redhead69]

Originally Posted by chevguy7

How easy would it be to swap in the eaton posi compared to a powertrax?

the powertrax requires on ring and pinion set up.. so much easier

[jwalk]

i had one in a 67 long bed 3.73 small block around 400 hp 420 tq and it lasted about 5 months i was kinda hard on it but all the pins broke so i went with a detroit unit and i have had it in my daily driver for 4 years now same motor no problems i know it cost more but you get what you pay for

[Inherited71]

I put on in my 71 felt good at first. It would lock one side then unlock the other. Came back home pulled the cover cheked it all out looked good. Found out that air pressure in the tires were off (slicks) matched them up drove it around felt good. Stoped in the road Stalled it up and let it have it felt awsome till the thing Ulocked or if you will disengaed BOTH sides hit the high side chip @ 6800 RPM. Oh on the way home locking and unlocking. Called Eaton told them what was happening and did I do any thing wrong during the install they said no.(went through the install process) They said to return it. So I called summit and all is well. Eaton did ask how much power I was making & I said about 550 or so the first thing he said after that was send it back. So my recomendation would be a spool or a POSI. This is just my experience.