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Now that I have the bump steer measured, I think I am thru with my suspension mods.
I had been looking at each part closely, but individually.
It was time to take a look at my whole suspension setup,.
And make sure everything plays nice together.
WOW!
That got so involved I decided to put it in it's own thread: https://www.corvetteforum.com/forums...ion-setup.html
I received and installed by new upper ball joints today in my SPC adjustable a arms.
The supplied one was 1/2" taller than stock. I went back to OEM height.
The taller one did increase the camber gain curve, by .25* neg camber, (at 1" bump) which is a good thing.
But it also increased the bump steer and put a curve back into the bump steer line, making it more dramatic. And it raised the roll center height (RCH) by 1/2".
I want the lower RCH, more than I want the camber gain.
The lower RCH balances the car better (Fr/Rr), and the RC moves around laterally less in roll, making the car more consistent during transitions.
Life is all about compromises!
Then I bumped into these beauties and just could not resist.
I found some aluminum versions of the J56 Caliper Bracket Reinforcements!
The original forged steel brackets were only used on the L88, ZR1 & ZR2 cars with the twin pin J56 calipers.
They are supposed to help during hard braking and racing by reducing bracket bending, vibration, air pumping, pad knockback and pad taper wear.
A vintage race car team made a few sets of these.
I will be using some aggressive brake pads, and auto crossing.
I am not sure I really even need these, but if I wind up with some billet aluminum steering arms, at least they will look good together!
LOL
Last edited by leigh1322; Apr 21, 2026 at 10:45 PM.
I finished measuring the prototype steering arms.
Then I bumped into these beauties and just could not resist.
I found some aluminum versions of the J56 Caliper Bracket Reinforcements!
Nice find!
Any word from Van Steel on the new parts?
Last communication with Van Steel was about a week ago.
Basically I am waiting on prototype steering arm #2..
In the meantime I did get some of the fuel lines run.
Bending them straight again was quite a challenge.
One had 3 u-turns to fit into the box.
Tag suggestion to unbend "this section" on a straight surface turned out to work well and get 90% of it un-bent.
The lines look really nice.
I also panicked a bit when mine arrived and I saw those 180 degree bends in the box.
Thank goodness for videos and instructions.
