zook diff question

[team.LS]

hey guys a friend of mine has just bought a 1985 sierra.
we are just wondering if the rear diff is weldable or is it an lsd?
also whats the best way to get some lift for the old girl. he is on a low bugdet but we can make drop shackles,brackets etc any help will be great thanks guys

[Gwagensteve]

It's weldable. It's a 4 pinion split case diff that looks like an LSD until you pull it apart. They weld well if you are careful and clean in your work.

There's no need for more lift. Body lift or cut the guards to run the tyre size you want. Suspension lift was soooo 2002.

Drop shackles aren't even 2002 - they are 1997. They are worse than a bad idea. Weld the rear diff then it won't matter if a wheel is on the air or not.

Steve.

[shakes]

this link...

http://www.outerlimits4x4.com/viewtopic.php?f=7&t=48714

and this link...

http://www.outerlimits4x4.com/search.php

have loads of info

I'm still new to zooks but at a guess the diff is weldable. jack the back of the car off the ground and spin a wheel, if the opposite wheel spins the opposite direction it's an open diff (it's past my bedtime so can someone confirm that for me??)

There is a few threads about with a cheap shock and spring combo from various car's that mixed with some good 31's a welded diff and some carefull cutting make for a very cheap and capable little rig. when you find them if there is anything that you don't understand ask about sepcifics

[lump_a_charcoal]

Also check out Auszookers.

Loads of tech there if you can withstand the hazing...

[V.W.Dave]

Mate it all comes down to what your planning on doing with it. If its going to be a daily driver keep it SPUA (spring under axil) get some 2" springs 2" body lift run a set of 31s and it will out drive about 75% of the big landys out there.
If its going to be a weekend thrasher a simple SPOA (spring over axil) on standard springs with a welded rear diff will get you just about anywere you want to go.
If your looking for more flex on a budget look at doing a RUF (rear springs up front) convertion and you will find about 6" more travel. If you invert your rear shocks it will give your rear a little more flex.
The things you can do to a zook under a tight budget is countless thats why we all love them so much.
If your planning on welding your diff be ready to deal with its onroad problems. But in my opinion the down falls on the road are worth it.

[VR Rodeo]

If you invert your rear shocks it will give your rear a little more flex.

How does inverting your shocks give you any more flex ?

[V.W.Dave]

Invert was not the right word but its what all the cool kids call it. If you move the upper mounting point of your rear shock the the center of your tray just in front of your fuel tank it allows you to run longer shocks. from memmory it will alow you to run a shock that is 18cm longer (don't quote me on that) this allows your rear to ave that much mor down travel.
For the life of me I can't find a picture of a zook with this but here is a picture of the rear end of a lux you will get the idea.
http://72.34.32.141/~snakerac/popup_ima ... 2eaac40de9" onclick="window.open(this.href);return false;

[lump_a_charcoal]

Yeah that is inboarding your shocks.

Inverting can just affect the shock rate, depending on the shock.

[VR Rodeo]

Invert was not the right word but its what all the cool kids call it. If you move the upper mounting point of your rear shock the the center of your tray just in front of your fuel tank it allows you to run longer shocks. from memmory it will alow you to run a shock that is 18cm longer (don't quote me on that) this allows your rear to ave that much mor down travel.
For the life of me I can't find a picture of a zook with this but here is a picture of the rear end of a lux you will get the idea.
http://72.34.32.141/~snakerac/popup_ima ... 2eaac40de9" onclick="window.open(this.href);return false;

However if his shocks, in their stock position, arent fully extended when the springs have reached their maximum flex then how is inboarding/inverting the upper mount going to make any difference to the amount of flex he has ? You would only ever do this if your current shock is too big for the stock application and you are gaining a huge amount of flex out of the back springs to warrant having such a big shock.