Lowering question

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Irishspring46

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Sep 14, 2022
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1) They are no drop spindles for a gbody, but the S10 spindles are the same as a Gbody and come in drop versions.

2) Only tall lower balljoints will drop your car, and they drip it by whatever additional height you get. 1" taller valljoint drops your car by 1"

3) Yes you can change just the uppers and add tall upper ball joints. This will not effect your ride height at all.

4) Technically no, but you may want them to stiffen the suspension so you don't bottom out.

5) No, don't need different shocks.

6) Drop springs, upper control arms with tall balljoints. That's just my opinion though. Others have done it differently and been happy with their results.
will tall lower ball joints change geometry? So from my understanding only the lower ball joints will effect my ride height. Will tall and lowers change geometry?
 

Streetbu

Know it all, that doesn't
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May 22, 2011
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will tall lower ball joints change geometry? So from my understanding only the lower ball joints will effect my ride height. Will tall and lowers change geometry?
No lowers will not. Think of it this way. Using a tall upper effectively changing the height of the spindle from balljoint to balljoint.this pushes the upper and lower a arms apart from each other, which changes the angles as the suspension goes thru its arc.
 
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Irishspring46

Greasemonkey
Sep 14, 2022
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Ok so they both will change geometry. Is there any negative in going too much in height in ball joints?
No lowers will not. Think of it this way. Using a tall upper effectively changing the height of the spindle from balljoint to balljoint.this pushes the upper and lower an arms apart from each other, which changes the angles as the suspension goes thru its arc.
So lower changes height upper changes geometry I see.
 
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403Olds

G-Body Guru
May 31, 2014
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South Central Ohio
If your replacing stock components anyway, tall uppers and lowers get you new balljoints and geometry improvements, Plus both are easy to do since you are replacing springs anyway.
 
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Irishspring46

Greasemonkey
Sep 14, 2022
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If your replacing stock components anyway, tall uppers and lowers get you new balljoints and geometry improvements, Plus both are easy to do since you are replacing springs anyway.
Lower ball joints change height the upper changes the geometry?
 

403Olds

G-Body Guru
May 31, 2014
534
426
63
South Central Ohio
Lower ball joints change height the upper changes the geometry?
Both the upper and lower are making the spindle taller, which helps out the geometry. The lower also effectively lowers the A-arm, which lowers the car. I've got tall uppers and lowers with 5660 moog springs, it handles pretty well for 15" rubber. with 26" tall tires, my fender is just about 26" off the ground, for comparison.
 
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Irishspring46

Greasemonkey
Sep 14, 2022
105
33
28
No lowers will not. Think of it this way. Using a tall upper effectively changing the height of the spindle from balljoint to balljoint.this pushes the upper and lower a arms apart from each other, which changes the angles as the suspension goes thru its arc.
Do you recommend any height for upper ball joints?
 

scoti

Royal Smart Person
Sep 5, 2019
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Both the upper and lower are making the spindle taller, which helps out the geometry. The lower also effectively lowers the A-arm, which lowers the car. I've got tall uppers and lowers with 5660 moog springs, it handles pretty well for 15" rubber. with 26" tall tires, my fender is just about 26" off the ground, for comparison.
Clarification on this statement.... A tall lower BJ technically raises the spindles hub C/L which yields drop. It's doesn't 'lower' the a-arm as its position is fixed via the chassis mounting points.
 
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