ok. so i am considering on lifting my truck up with a six inch suspension lift kit, and i have got everything mapped out, done my research but keep stumbling across the same "problem". essentially, the overall consensus is that when you lift your truck (mine is a 95 flareside) 6+ then you have driveline problems.. everyplace i go says i will have issues with this, but no one says what these issues are. im trying to further my knowledge on this before i jump into this project, so any input would be very helpful. will i need a new driveshaft? what to do about the angle going into the diffs.? everything concerning this part of this soon to be project is verrryy fuzzy. could someone clear it up for me?

 

What are you lifting??????
How are you going to lift this? All spring? AAL? Block? Lots of variables that will affect the the overall picture.

 

currently truck has the TTB.. was looking at the SAS but not so sure about that now... the lift would be coil spring in the front and leaf spring in the rear.. im not gunna mess around with add a leaf or blocks... i will be lifting a 95 f150 flareside,4x4,5sp,300.

 

Well then a SAS with 6 inches will only require a small amount of work to the drivelines. The front may have to be extended, and is some cases, it will not. What some guys do is use a longer slip joint to make up for the small differences in length. This will compensate for the greater distance and provide some added spline travel.

Since the rear uses a differential that is located in the center of the axle, you are only limited to the travel of the axle and articulation will not affect the length as much as the front axle would. As the axle articulates, it actually pivots around the center, and as each tire moves up or down, the driveshaft length remains the same. It is only when the entire axle moves up or down, and this is a limited number. That being said the stock driveshaft is usually good to go for 6 inches of lift.
Now, if you install a larger Dana 60 front axle, and a Sterling 10.25 rear axle, the driveshafts are almost perfect for this amount of lift and will actually tolerate slightly more lift.
Next is the brake lines. This has s imple solution. Longer braided lines. Thats simple. Everything else is gravy. If you intend to ever go SAS, now is the time.
As I mentioned in some other posts, I have less money invested in my Bronco SAS with 1 ton axles than most will spend on a TTB lift for the same heigth.
It takes quite a bot to clear 37's in these trucks and still have enough clearance to keep fenders on it, and I upgraded everything on 1 ton gear for not much more than it costs to lift a TTB truck. This was a very easy decision to make.
Other than some complexity, the coil spring option would be just as easy and still very cost effective.