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Just wanted to know why some guys spend a few hundred bucks on an sas, and then some guys spend a couple thousand. I am guessing that most of it has to do with the guys who spend a couple thousand are buying brand new of everything for the axle, new arms, etc. Is that right? I am looking at doing an SAS on my 86 F150 and have a limited budget at this time. I can't stand the TTB on or off road anymore. Oh, one other question, If I want 6 inches of total lift, and I read that you can get 2 inches of lift just from the swap itself in the front, does that mean that I need 4 inch coils in the front and 6 inch leafs in the back? Don't need any real in depth answers cuz I've read alot about sas, just a simple answer will satisfy me.
you can spend anything you want....alloy shafts, new gears, new brakes, and a locker can cost you two grand...but if youre just going to swap in the stock axle it can be done for a couple hundred bucks...
Cost of the tires is the biggest expense, followed by the axle itself, imo.
If you are using new springs, the best thing to do is drive it for a month and let it settle before leveling the back. Then put the wheels on front and back and see how much lift is needed in back. Probably want at least one inch higher in back.
I put about a grand into my sas, but that's because I bought all new steering parts, new bearings, etc. If you have parts that are good enough to re use, you can get away cheap.