the highboy leafs in front gave me about two inches... dropping the front would give me 4 inches I believe... so 6 inches of lift total. the rear was a shackle flip with a forward hanger mounted on back that got me about 4.5-6in maybe

 

If you lift the front with new hangers you also need longer shackles or your pinion angle will be fubar. 4" taller hangers should require 2" longer shackles. That will also gain you 1" of lift

 

^Sounded to me like he wanted to intentionally FUBAR the pinion angle as to alleviate some driveshaft angle. Which would screw up castor and make it not drive right.

 

I understand now that it was a bad thought from the start.... didn't think of the castor angle...

 

im curious as to why if I get 4" longer hangers on front that I would only need a 2" longer shackles on the back of the front leaf springs?

 

^^I'm curious as well.

Not to question a fellow genius LEBer or anything.

 

Read this.....



You cannot only lift 1 end of a front leaf spring without fubaring your castor angle. Its physics

 

That's what I just told him...

I'm asking you how you lift the front end 4" and the back end only 2" and not screw up your castor angle. It's physics.

Edit: We're both saying the same thing with different reasons that are equally important. I'm telling him it will screw up castor, you're telling him it will screw up pinion angle. I'm also saying he can cut/turn his axle, but doesn't seem like he has enough lift to need to do that. What doesn't make sense is lifting the front of the spring a different amount than the rear.

 

while I under stand that part... are you saying I can lift the front of the leaf spring 4 inches with hanger and only put 2 inch longer shackles on the back and not screw up caster/ driveshaft angle?

 

The rear is already lifted(not really lifted but is mounted lower) 4-4.5" with stock shackles. I'm staying he needs 6-6.5" shackles to match his 4" front hangers. If you only lift the front and keep the stock shackles it will push the shackles rearward. Longer shackles will keep the shackle angle correct. It essentially does the same as when you use longer leaf springs in the stock mounting position

6-8" isn't enough to warrant a cut and turn on the Cs. His best bet if the d-shaft is hitting the crossmember is to build a new crossmember

 

ok thank you for clearing that up... and.... the driveshaft ears rub/bind a little on the axle yolk... I will see if I still have the problem after I get the lift in

 

So it binds now? I cannot imagine your d-shaft binding with stock highboy springs only. Its simply should not be steep enough. I have roughly 6" of lift on my 250 and its no where near binding. I'd probably be able to lift it another inch or two comfortably as long as the shaft was long enough.

Awaits jokes from the peanut gallery

 

it binded when I was doin a rough estimate for how much lift I needed to make the truck sit level

 

Do you have a CV at the t-case?

 

as a matter of fact... I do have a CV at the transfer case