8" rear end convert to posi?
 

ok ive got a 68 mustang with a 8" rear in it,, i wanna make it a posi or lsd, question is were can i get the guts for it? and how hard would it be to put in?

sorry i know the question is kinda vauge, im just hoping there is a way to pull my old diff guts out from the front and bolt the new front with posi/ lsd stuff in its place. and not have to set pinion depth and whatnot.

also what cars could i find a unit in?

and ive heard that a 9" internals could fit also but it deosnt make sense to me

It is a 8" not 8.8" right. Check out Auburn lockers or eaton.

I run a Detroit True Trac in mine. If you have to ask, have a shop do it.

+1 on true trac

its 8" im pretty sure, and the reason im asking is im trying to figure out if on these units the whole gear assembly comes out with the cover once it unboltedand the axels are slid out? and then a pre built unit with the cover on it will just go into place and you slide the axles in and away you go

In both the 8" and 9" Ford rear, it has a 3rd member. The part that bolts on that has the yoke sticking out of it(the "cover") actually has the entire gear assembly in it. Axles slide out of it first, unbolt it and pull the whole thing. They weight a freakin TON and are quite awkward to handle from under a car.

http://www.metropartsmarket.com/rearend/product_2.jpg

That's typical for a Ford 8 or 9, to give you an idea.

I bought a Yukon Trac Lok on ebay for either high 200's or low 300's, best deal I could find and I looked every where. There's a dealer on there who sells them extremely low and will sell you all the bearings too at a fair price. I then got a local shop to install it in the 3rd member that I pulled out and then installed the whole third member with trac lok after.

Yea i forgot about tru trac. I have a few stang owners in a local club that run that locker and they love them, there on both on v6 and gts

is there a place that sells complete third members? i would like to have 355s and a tru track, i imagine curries sells them, but i dont want to sell my organs to pay for it.

A full 3rd member with a True Trac isn't cheap. Most places are in the neighborhood of ~ $1,000 for them.