[Keith Seymore]

Originally Posted by aceaceca

I am having a hard time making out what these gizmos do. Are they raising up the differential mount point for the upper control arms?
We used to lower down the differential mount point for the lower control arms.

Same thing.

They are changing the Instant Center location of the rear suspension, and it's relationship to the center of gravity of the vehicle.

Raising the rear of the upper control arm and lowering the rear of the lower control arm both move the IC up and more rearward from the stock location, increasing the anti-squat during launch.

Most folks move the upper and try to make the lower horizontal, but I believe it is to make it easier to visualize the changes being made.

K

[donziboy]

Thanks for all the responses, I will take my time moving forward to figure out what direction I will go with changes and stance.

[242177P]

One last thought. IF you decide to keep them, there might be a way to avoid
denting the floor. El Camino used an add-on bracket that raised the snubber
maybe 3/4". OEM would require a hole drilled into the housing. Can fabricate
a taller spacer as well?



(ad from which I stole that pic ---> https://yenko.net/forum/showthread.php?t=150131)