rear end question

[Hezsus]

So I'm looking at buying a 14 boltrear end with 6 bolt hubs and the Guy said it has factory clutch type posi. Was this ever an option? Also said the brakes haven't been looked at in a while, can I bolt up my 10 bolt back plates and the rest since they are brand new? Anything else I should loom for,Ian hoping to pick it up tomorrow evening

 

[Fobroader]

Not sure about the diff but your brakes will not bolt up to it for sure.

 

[Hezsus]

Dang, I thought that the may have similar bolt holes. anywhere heres the link for what i'm looking at:
http://london.kijiji.ca/c-cars-vehi...n-14-bolt-4x4-posi-rearend-W0QQAdIdZ306376381

I've looked it up and there was no posi units at all in any gmt 400/ 800 units from factory. you either got G80 or open (now i wish i had open)

So whatever this guy has in there (wont send a pic cause he's on dial up) cant be from factory if theres clutch plates and such.

He also said it was off a farm truck that rotted away. so i'm not sure about it. 14 bolt would be nice but not sure if its worth that kinda money since i will almost definately need all new brakes, bearings and seals, and possibly new clutch pack (if this is even what he has)

I have a 10 bolt rearend with brand new brakes (everything but the back plates and ebrake arms). And i have new axle bearings and seals.

But i will need a new differential.

Opinions??? anyone?

 

[TruckinAin4Sissies]

Instead of the 14-Bolt why not throw in a true-trac?

 

[Hezsus]

Instead of the 14-Bolt why not throw in a true-trac?

Mainly because both my rear ends have G80's which are a closed carrier. True Trac Needs an open carrier (edit: lock right needs the open carrier. true trac is a closed carrier). But I'm thinking along those lines now.

I asked over on fsc and they tell me the G80 Gov lock does have clutch plates in it? I never noticed anything that looked like clutch plates but if this is true the rear end he has is just a wore out G80.

Thanks for the suggestion

I will be reduilding my rear end.

I'm thinking buying an open carrier and throwing in a lock right
Or
Spending the big bucks and getting a Detroit Locker

How is the detroit on the road? I hear they're pretty agressive and i do DD my truck, I can live with agressive as long as there are no side affects (like wearing out) other than ride quality.

 

[Hezsus]

So i got into my rear end last night and found the problem, My backlash is .030 which is waaay too much. and my pattern is terrible. pics below.
I plan on moving the carrier closer to the pinion, I know i should be moving the pinion but i think that the carrier is easier and cant really hurt anything.

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By hezsus at 2011-10-14

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By hezsus at 2011-10-14
Its hard to see in the last pic but the pattern is just on the top edge, It has wore away the gear enough and kinda expanded down farther.

 

[JonZ71]

a true trac requires a open differential? Obviously you don't know what your talking about here. a trutrac is a complete differential itself.

and you used antiseize as a paint to check pattern?

 

[am92]

As for the g80 it does have clutch packs that in effect lock the diff once one wheel starts to spin much faster than the other. I have heard that they wear out firly quickly though and some people have experienced catastrophic failure hence the nickname "gov-bomb". If you want to get the 14 bolt I would just add an aftermarket locker or posi unit instead of staying with the g80 and possibly having to rebuild it in the near future

 

[Hezsus]

a true trac requires a open differential? Obviously you don't know what your talking about here. a trutrac is a complete differential itself.

and you used antiseize as a paint to check pattern?

I meant the lock right.. I know true track is a closed carrier (dont be rude, that **** isnt welcome on this site). and yes I used antiseize, its not the best but it works when you have nothing else.

I plan to keep my current non locking G80 in the truck for now while I rebuild my other rearend. Problably with A detroit locker and I may regear, so I could be driving with my currend rearend for a while till funds are built up.

 

[JonZ71]

the 14bolt G80 is much stronger then the 10 bolts. even though ive never blew up a G80 in my camaros nor trucks so meh. I got a trutrac now in it though and im about to try and sell these rearends.