So I will need a pinion angle adjustment to correct a 3-4" lift on my build. Is it recommended to add an adjustable upper control arm on the rear, or lower...or both? If you can, provide the "logic" with any recommendation. Thanks.
Rear lowers are more than enough although most with that size lift don't do anything at all. Even the stock drive shaft can handle that. If you change it to a JE real shaft even less possibility of issues
This is not correct. FRONT lowers are enough to set caster but you NEED rear uppers to set pinion angle.
You only need to set your rear pinion angle IF you install an aftermarket u-joint style drive shaft. If you do, you need adjustable rear UPPER arms to set it.
Thanks again, Eddie. I will be installing aftermarket driveshafts after the PR60s are in, the suspension is in and I can measure.
The are a ton of vendors for the adjustable uppers- any recommendations? Style, strength, manufacturer, etc.?
I've been schooling myself on this topic too. On average how much pinion correction with rear adjustable uppers is dialed in? From stock to 1 or 2 degs bellow drive shaft Angle to support new DC driveshaft. Does this cause any lubrication concerns of the pinion bearings if angle is far from Stock? Do coils bow out a bit more?
Hope this helps add dialogue to thread not hijacking, thanks
Thanks again, Eddie. I will be installing aftermarket driveshafts after the PR60s are in, the suspension is in and I can measure.
The are a ton of vendors for the adjustable uppers- any recommendations? Style, strength, manufacturer, etc.?
Really look for arms that use Johnny joints so look at Evo, Currie, some synergy arms, etc