4inch shackles and pinion angle ?

[tiffo60]

If i put 4 inch lowering shackles on will i have to adjust the pinion angle?

[daves03l]

I have 4' shackles on my 03 and all I did was turn the shims 180 degrees. I'm not sure about a year 2000. Dave

[gbgary]

I have 4' shackles on my 03 and all I did was turn the shims 180 degrees. I'm not sure about a year 2000. Dave

+1 when i had them on the '04 springs...now when i had them with the '01 springs i took the shims out.

[Tex Arcana]

subscribing

[PoorSvtman]

99-00 dosent have pinion shims from the factory... I have my 03 leafs, leaf taken out witch put me about close to where a 99-00 with 2 inch shackels would sit... i added 4 inch shakles to that and have had no issues... I had a slight vibration at highway speeds and played with the 03 shims and it did nothing...

[my2002lightning]

I'm curious, as well. I'm running the 3" on the JLP 2/3/4 shackle on stock-leafs and she's still high.:rolleyes:

I'm thinking that with that tall of a shackle that maybe a sway-bar and/or pan-hard is in order to tame any kind of sway under hard-cornering.

Ronald

[tiffo60]

terry, what do you think?

[PoorSvtman]

terry, what do you think?

all you have to do after the install is check the pinnion angle... if its off add shims.. i can probly get the shims free from a buddys shop

[tiffo60]

all you have to do after the install is check the pinnion angle... if its off add shims.. i can probly get the shims free from a buddys shop

cool, i have no idea how to check it or where its suppose to be, so you help will be needed with that part:tu:

[Tex Arcana]

I'm curious, as well. I'm running the 3" on the JLP 2/3/4 shackle on stock-leafs and she's still high.:rolleyes:

I'm thinking that with that tall of a shackle that maybe a sway-bar and/or pan-hard is in order to tame any kind of sway under hard-cornering.

Ronald
How would you know about body sway in hard cornering?? :rll:

[PoorSvtman]

How would you know about body sway in hard cornering?? :rll:

I did feel some sway with the taller shackles but most wont feel it i think

[Tex Arcana]

I did feel some sway with the taller shackles but most wont feel it i think
It's not sway I feel in hard cornering (and methinks I corner harder than most here), I can feel the axle going sideways a bit, kinda like a bit of rear-end steer, if that makes sense.

[tiffo60]

It's not sway I feel in hard cornering (and methinks I corner harder than most here), I can feel the axle going sideways a bit, kinda like a bit of rear-end steer, if that makes sense.

i know with just the 2 inch shackles my tends to want to get loose quicker in hard cornering, if i take a corner real fast im almost allways sideways when i come out of it

[Tex Arcana]

i know with just the 2 inch shackles my tends to want to get loose quicker in hard cornering, if i take a corner real fast im almost allways sideways when i come out of it
I still need to put my truck on a skidpad to be sure. I'm also not too sure how much "walking" mine is doing, since I boxed the shackles and stiffened them up considerably.

I think the biggest thing I need to know is: exactly what symptoms does one see/feel/hear when the pinion angle is off? I'm not getting anything conclusive anywhere.

[Mark #2]

I still need to put my truck on a skidpad to be sure. I'm also not too sure how much "walking" mine is doing, since I boxed the shackles and stiffened them up considerably.

I think the biggest thing I need to know is: exactly what symptoms does one see/feel/hear when the pinion angle is off? I'm not getting anything conclusive anywhere.

Driveshaft vibration, harmonics, most lifted 4x4s have this feeling. Most people will not notice, but sometimes if you find a harmonic at like 70 then you will always notice it.

[Tex Arcana]

Driveshaft vibration, harmonics, most lifted 4x4s have this feeling. Most people will not notice, but sometimes if you find a harmonic at like 70 then you will always notice it.
hm, ok. I need to drive it more, because I'm not able to separate the suspension vibrations from anything else yet.