The front suspension on an 84-87 Fiero is crappy at best. It needs to be softer so that it works (digs in). Stock springs , but with DROPPED spindles... stock ride height will make it just wash our , fuck with the center of gravity. You want the front end to be slightly lower then the rear... Come into a corner hot , brake late to increase the front contact patch , then turn and accelerate out. One of the best upgrades you can make is a good set of front pads ,or a complete brake swap with a proportioning valve.
If you can drive a fiero fast you are better then the vast majority of drivers. It takes a lot of skill to make one quick through the cones... driving a prepped miata by comparison is child's play.
I started off with Eibachs on my car , Koni's out back cranked full stiff , 1" bar front and rear... 11.25" brakes , prob solver ball joints. 225's front , 255's rear.. Worked great , predictable great all around track/ street setup.
a good autocross setup will differ from a good track setup. An autocross car will be twitchy at higher speeds.
I tossed the Eibachs in favor of ground control 390lb. springs in back and kept the eibachs up front. This wasn't the best setup, just didn't want to turn in.
The eibachs were tossed upfront for Koni's , stock 4cyl springs on Streetdreams dropped spindles.. The car started to work really well , but still understeered at the limit a tiny bit. I swapped the front 1" bar for a stock 84 bar (which I was told was smaller , never checked) on poly. This gave a great feel and rid the car of understeer. For the track I would just put the 1" bar back on. It made the car understeer a tiny bit ,but controlling the car should the rear end get loose was a LOT easier then with the smaller , or no front bar.
I got rid of the ground controls because the spring was too short.
www.stockcarproducts.com
got the same rate in a 10" spring from carrera. More travel , worked better ,I was happy.
I haven't autocrossed a fiero in 5 years , but I did run my car for about 8 years locally and in the US in CSP. This is what I found worked best for me on predominantly street tires. Race tires are different.
I removed the front steering damper , gave a somewhat vague feel at center ,but made low speeds more tolerable.. Not sure if I would put it back on...
PS.. you don't need some BS , bolt on "tubular"" suspension. The fastest of the fast (George Ryan , AP 84 ) ran it , never liked it , so did a few others that would be considered the fastest in the fiero world. It's shiny and impresses the Old Europe types, but offers no real advantage.
The fastest is still an 84-87 car with an 88 rear swap. Thats not BS , it's literally what the fastest autocross fiero in the country runs...don't ask me why it works , it just does.
Fuck you Shaun , one day those little boys will talk and when they do you will get yours.