Obby1

I have a 2014 STX model F150. Crew cab 5-1/2' bed (family truckster)

I want to level it and would really like to do it by lowering the rear.
I've found a plethora of very affordable shackles that advertise to do the trick, but I have a concern that makes me weary about this type of bolt on change.

By lowering the chassis via new shackles doesn't this alter the pinon angle whereby a shim would be needed to maintain all of the drive line angles?

The common kits I have found don't include axle shims. Are these indeed needed or not?

Now, on my dad's truck I've installed the spacers in the front to raise it 2.5". It was extremely easy and really looks great. Although the height in the front would be nice, I'd get a better return if I could lower the tailgate a few inches. These newer F150s have tailgate heights that the same a super duties! Why do you think they invented that handle and step thing in the tailgate?

Thank you!

ThatBlue4x4

I'd just go with lowering shackles in the rear, it wont hurt your driveline angle, if anything it will make it more inline. Camburg makes a very high quality shackle.

jp360cj

It will affect the pinion angle, but with such a long wheelbase probably not enough to warrant shims. Proper U-joint operating angle (which is really what's important, not the actual pinion angle) is a range, not an absolute number.

TJPlatinumEB

Use the GroundForce kit. I've installed them on 4 different trucks and everything was perfect. They include the shims to make sure everything lines up after you are done.

macd

Just got done doing the 3" belltech shackle and the pinion angle is still fine, no shim needed. You could just remove the rear block under the leaf springs if you just wanted a 1.5" drop and you didn't want to do a shackle.

WTF150

Yes you need shims. I belive they are either the 2 degree of 2.5 degree shims.

zimmer0

iTrader: (1)

i have a set of shackles and shims for sale if interested. Shoot me a PM

clarkbre

Is this a 4wd? If so, start by taking out the stock 1.25" blocks between the axle and leaf springs. You may be surprised how good it looks...and it's free!!!

johndog82

iTrader: (3)

no you dont always need shims, it varies by truck. i did not need them with my groundforce shackles on the 1.5" setting. the general rule is you only install shims if you experience the shudder after installing drop shackles. youre not supposed to automatically install the shims when you install the shackles