/forums/images/graemlins/burb.gif Hello, My name is Cardea Blue and I'm looking to get my newly recived 4x2 87' GMC Saburban to be a heart stopping, mud stombing, trail blazing offroad machine. It was given to me for my 16th birthday and it's a nice truck and all but I'm looking to get some more out of it. But I want to know what kind of project am I about to get myself into. And I need some advice as to not only what to go about looking for and what I have to be,if I have to buy anything at all. Because a friend of mine to me I could get a donor and do the swap fairly cheap in little time. But I want to know if there are any kits of if any of you there can help me put one together for relatively cheap. Thanks for all your help, /forums/images/graemlins/burb.gif-Cardea-/forums/images/graemlins/burb.gif Here's some info I got from my friend on AF : Hey BlackBob, Yeah, the 4x2 to 4x4 swap is pretty straightforward if you are mechanically inclined... and it should work for any Suburbans/Blazers/Jimmys from '73 to '91. If you you can get your hands on a good PAIR of 3/4 ton axles, it is well worth your while to swap them out... and it really isn't that hard. If, however, you have a unknown gear ratio (in yours or the donors axle) then you'll have to do quite a bit of research or swap out the gears. (Rears and fronts should have the same gear ratio!) The hard part is not the actual swapping of axles... it's finding that G*DD*MNED BOLT that you just cleaned off and put down on the floor - and remebering where you stashed those new crush washers for your brake hose to caliper connection. Basically, make sure that you replace as much stuff on the axle as you want BEFORE you start the swap. At the very least... 1. Gear Oil (inspect the gear as well - tooth wear patterns, etc...) 2. Tie Rod ends (REALLY IMPORTANT) 3. Get the Balljoints tested with a runout gauge... 4. BRAKE PADS ! (or loaded calipers - well worth the extra $$$) 5. BRAKE HOSES ! 6. U-JOINTS ! Now is also a good time to throw a lift on the suspension... again, before you've got the frame in the air and the axles on the ground. BUY EVERYTHING AHEAD OF TIME !!!! Fluids Gaskets Bolts Random tools... (tie rod end separator, BFH - Big F*cking Hammer) AGAIN, remember, this will take quite a bit of time... so make sure you have a constant reliable alternate mode of transportation. Depending on your abilities, tools, $$$, and the ambient temperature... it can take a Saturday/Sunday (like in my case) or it can take 6 months (like my buddy did...) I recommend sitting down under your truck for half a day, cleaning it and staring at it. Get a marking pen, pad of paper, pencil, a 12-pack of beer and just put a number on every single place where there is a connection from the axles to the suspension/body/tranny/tcase/engine/steering/braking system.... This'll help with a couple of things... 1. You'll become intimately familiar with the underside of your truck before you buy the stuff you need. 2. You will have cleaned the underside a good deal (always a good thing) 3. You'll have a CHECKLIST of stuff to look at before you start. 4. You'll get a better understanding of how everything works together. If you have any questions - now is a good time to educate yourself about the conversion. Remember this... Between '72 and '91 in the Suburban / Fullsize Jimmy/ K-5 Blazer (with the exception of diesels) virtually everything on these trucks is interchangeable. If you have a 1/2 ton, try to stick to 1/2 ton components... because when you start going to 3/4 ton stuff it gets more expensive, and parts differences start to cause confusion. If you have a 3/4 ton, stick to 3/4 ton stuff, because that is what your truck requires in order to be BEEFY! DANA40 Kicks ass! GM12Bolt Kicks ass! TH400 Kicks ass! NP205 Kicks ass! Smog Equipment SUCKS ass! Lastly... Tread Lightly means that if you "accidentally" run over a few Enviro-Nazis, you should bury the bodies... so as to not disturb the pretty flowers. - Stu /forums/images/graemlins/confused.gif /forums/images/graemlins/confused.gif /forums/images/graemlins/confused.gif /forums/images/graemlins/angryfire.gif /forums/images/graemlins/burb.gif /forums/images/graemlins/crewcab.gif /forums/images/graemlins/truck.gif /forums/images/graemlins/pimp1.gif /forums/images/graemlins/ignore.gif Anything I am missing ????