For those who know can someone tell me what axle warp is? I'm getting my truck outfitted with the 6inch fabtech and only do street drving. Is this something I have to worry about?

 

No worries.

 

Do you have a spacer in the front?

 

I think you're talking about axle-wrap.

This is typically associated with drive axles with leaf springs (your rear axle). For example, imagine you lift the rear of your truck by putting 10" spacer blocks between the springs and the axle. This would greatly multiply the rotational force of your axle housing when you were on the gas or brakes real hard (which would cause your entire axle housing to rotate). This is bad for your springs and your u-joints...not to mention loss of traction (wheel hop) which can break things like u-joints, transfer cases, etc.

In your case...I would guess your 6" lift will probably lift the front 6" and the back about 3-4 (leaving your truck level). If it uses blocks to lift the rear (as opposed to higher-arched springs), you may experience a little mild amount of axle wrap under sever situations...but I don't think it would be anything to worry about. I wouldn't go any higher than that with blocks out back, though unless you utilize ladder bars or traction bars of some type. Some vehicles are more prone to the effects of wrap than others...not sure how forgiving the new F-150s are when using blocks in the back. I should mention Fabtech is a reputable company who makes well-engineered systems...so I doubt they would sell anything that would be harmful to your truck when installed properly.

Hope this helps explain what axle wrap is.

 

Thanks Dewy. I'm 100% sure i'll be ok since I don't off road in my vehicle.

 

Axle wrap is also caused by lockers on pavement and things of that sort. When you're turning a corner the inside wheel turns slower than the outside (the outside has to catch up so it spins faster), when you're on pavement there is more stress on the axle to spin the outside wheel faster (especially with our heavyarse trucks) and if it can't break that outside tire loose (or inside, whichever is easier, usually inside) then there is a good deal of axle wrap going on. Hope that makes sense.

 

I had wheel hop in my truck on hard launching ..... light 2wd truck, and not a lot of HP. The axle shims that were provided with the lowering kit were evidently not the exact angle needed. I had a driveline shop re-align the pinion and transmission, which cured the problem.... $ 80. They did this by shimming the rear of the transmission 5/8" to match the pinion angle.
So, imo, if you are changing any suspension by lifting or lowering it may be a good investment.....

 

When are you going to get that damn lift installed?

 

I get some wheel hop sometimes on hard launches.. Doesnt do it as bad now with my new tire.

 

Who? I might do the install within the next 2 weekends, I sure as hell hope I have time by then (pretty certain I will).

 

Is there any thing to worry about concerning axle wrap if you use some 2"
Fx4 blocks on a 2wd truck with 2" autospring in the front?