Originally Posted by Robocop
I am still pretty much a newbie to this however I do know that AAL means to add a leafspring to the rear for more height. I have read where some members add 5100s to their trucks and also an AAL to the rear.
My question is when people say they have the rear TSB done is this basically the same as an aftermarket AAL kit? Isnt the TSB the same thing as an AAL kit?
I am asking this because I am planning on installing my 5100s shortly and after my TSB my rear is 2.5 inches exactly higher than the front. I am confused because I see where most people go with the 5100s at 2.5 and also an AAL kit (or block) for their rear. If I already have the added leaf of the TSB do I still need to add another AAL kit or block.
For the ones who do add the AAL kit is it because they only have the weak 3 leaf set up and do not already have the TSB?
AAL means - Add an extra leaf to LIFT the rear suspension.
5100's are an adjustable strut/shock (coilover assembly) for the front suspension.
No, the TSB is not the same as an Aftermarket AAL. The TSB that you're referring to ... is a completely new set of springs that are stronger than the original ones and lift the rear end of the truck about 1" or so (after settling).
Let me explain.... After having the TSB installed, it will be higher but only temporarily. The leaf springs will settle and it won't be as high as when you first put them on. After settling, the TSB springs will give about 1" of lift.
A lot of folks will put an AAL within the TSB (1") leaf pak to give even more lift in the rear. The 5100's are adjustable so they can match the front suspension with the rear height (after installing AAL) to level the truck out.
Just to clarify....If you have the TSB done, you don't have to buy 5100's. I have the TSB and I had about 200lbs of sand in the bed over the winter. This helped the TSB Springs settle nicely and my truck has a very minor rake in the rear and my front suspension is still stock.