Drop spindles and "most" 15" wheel don't play well together
Thanks Dave Pozzi
The drop spindle kits use second gen parts, on a cast iron spindle similar to a second gen spindle with caliper mount cast in. The steering arm is two inches lower than a stock Camaro and the caliper mounts two inches higher in relation to the upper A frame, which can cause caliper to A frame clearance problems.
Several problems develop when you use drop spindles.
You can't fit some wide tires, the tie rod end winds up two inches lower in relation to the wheel so forget wide front rims.
Geometry stays stock which is not good on a Camaro.
Just trimming the springs to lower the car will put the geometry in a slightly better position as far as camber gain.
You may have clearance problems with the upper ball joint to caliper.
You can't use any aftermarket disc upgrades, they won't fit.
Steering arms are cast in, so you can't bend them to fix bumpsteer. You would have to use a rod end and spacers on a stud.
I have to apologize for using this photo. I took it from a web page of someone I exchanged E-Mails a fiew years ago. I can't find the E-Mail or web page or I would just provide a link to his page. I think this is the only image on my page that I don't have the owners permission to use. I feel the photo shows the problem so well, that I'll leave it here for a while.
I have a matching photo with the same wheel and tire but on a stock spindle, the tie rod end is two inches higher with that combination.
Another point, this is a Stainless Steel Brakes drop spindle, I don't know if other drop spindles are better or worse than this one. I don't know if Superior spindles makes all the drop spindles or if they are all making their own. If your 17" wheels have 4.25" backspace or less, they should clear, with "drop" spindles, according to posts on Team Camaro forum.