Gear Change 9.5" 12 bolt

[CAtaylor]

I heard these trucks were dificult to put the gears in.. Is that true? I thought it was about blacklash or some alignment issue. Did you buy gears for a 14?

I bought gears and a trutrac for the 2013 9.5 14 bolt. The front is the same as the 13 so no issues there. Google east coast gear, they have a write up about the changout. It is a little more setup going this route but no one makes gears for the 2014 carrier yet so not many other options.

[iCryWheniGoPoop]

I bought gears and a trutrac for the 2013 9.5 14 bolt. The front is the same as the 13 so no issues there. Google east coast gear, they have a write up about the changout. It is a little more setup going this route but no one makes gears for the 2014 carrier yet so not many other options.

Interesting, doesn't really look like that bad of an install if you choose option 1 but I may give the aftermarket a couple months to come up with something that fits

[Danthaman69]

I just got call they haven't come out with the gears yet. Guess I will wait. Geez.

[CAtaylor]

I e-mailed East Coast Gear today so I could provide all of the info I could to the shop doing the install when I get back on land. This is what they came back with "Pinion shim will be like any other rearend, it was very close to stock. If your going to put the truetrac in it, it should shim like the factory. You may have to add a couple a couple thousands to increase preload." Just have to run the cover spacer for a little room. Hopefully I can quit talking about it soon enough and provide some useful feedback. Should be back Weds night and have it back at the shop shortly after.

[brettls1]

I e-mailed East Coast Gear today so I could provide all of the info I could to the shop doing the install when I get back on land. This is what they came back with "Pinion shim will be like any other rearend, it was very close to stock. If your going to put the truetrac in it, it should shim like the factory. You may have to add a couple a couple thousands to increase preload."[/size] Just have to run the cover spacer for a little room. Hopefully I can quit talking about it soon enough and provide some useful feedback. Should be back Weds night and have it back at the shop shortly after.

I ordered my gears from east coast gear, they should be here tomorrow and I have an appointment with triple N on Monday to get them installed. I only went with 4.10's since I drive a lot on the highway.

[CAtaylor]

Good deal, looks like you will get in there before me. You might be a little taken back when you see the shop, I was at first. You have to step over transmissions and transfer cases to get to the office. Randy really seems to know is stuff though, and the guy at the GM place had nothing but good things to say about him. He said they have just been too busy to clean the thing up. You get to be the guinea pig now, so hope all goes well!

[iCryWheniGoPoop]

So you are going with the custom gear install? Or is east coast getting gears spec'd out for 2014's

[brettls1]

I'm going with the custom gear install, converting it to the previous style. I'm selling my 3.42's and rear locker if anyone is interested, only 5,000 miles on them. (318)655-4725

[fondupot]

I'm going with the custom gear install, converting it to the previous style. I'm selling my 3.42's and rear locker if anyone is interested, only 5,000 miles on them. (318)655-4725

 

What is the rear locker in these new trucks? is it the same as the old G80?

[iCryWheniGoPoop]

 

What is the rear locker in these new trucks? is it the same as the old G80?

No

[fondupot]

No

 

Is it also different from the "smaller" axle to the "bigger" axle? I'm just wondering what my all terrain has in it.

[CAtaylor]

I have tried finding details on the factory unit. All i can find is it has been improved and has a quicker lock up time. I haven't been able to find any specifics though. Appears to just be an "improved" G-80, mine is at the shop now as well hopefully i can get some pics of it in a few days.

[CAtaylor]

Well i finally got the truck back from the shop with the new gears installed. Good news is the truck is a whole different animal. Haven't went WOT on it yet but just normal driving it is a huge improvement. Gas mileage is coming up as well and will hold 70 mph in 4 cyl. Bad news is the rear has a very slight wine to it on the drive side. Radio volume on 6 and you can't hear it anymore. The guy that did the install said it was the Motive gears. They had a good pattern on the gears and had the backlash set to spec but had a good bit of wine on decel. They pulled it back apart 4 more times, been working on it since Tuesday eve, but never could get the wine completely out and the left it where it was least prominent. He said he hasn't used these gears for years because of this and won't even run them in his dirt track cars. Lesson learned on cheap gears! They are getting quieter after only 30 mi. so we will so how it goes after i finish breaking them in. I have some Amsoil to put in once i finish the break in, if that doesn't do it a nice exhaust will make it non existent. Just kind of disappointed after the money and time without the truck

[CAtaylor]

Here are some pics of the factory locker. I can't see any changes from the old G-80 just looking at it but i have only seen one other in person. Also the motive gears have quitened down after about 50 more miles, 2-25 mile heat cycles. Can't hear them listening for it now.

[iCryWheniGoPoop]

I thought previous models had the standard style spring packs