I read some where that there was two (2) different control arms for the 1986 model year. I did a search but could't pin point the correct information i think the poster said something about they went to a 1.6 control arm. Would very much like any help with this.

Hi friend, I just looked in the Fiero Store catalog for the control arms you ask about. The arms are the same for '84 to '87. The '88 arms are different. Of course the upper arm differs in shape from the lower arm for the '84 to '87 . Hope this helps . Ernie

As wheelman said, any new replacement control arms for the front are going to be the same for all models '84 - '87... but... original stock control arms are different for '84. GM changed the design in '85 and kept it that way through '87. The newer arms fit the '84's just as well, so if you go to a junkyard looking for arms, you want to be sure not to mix-match the different designs. They changed the upper and lower control arms for '85 to give an 18" shorter turning radius and more jounce travel.

Thanks guys for taking the time to answer my question.

Possibly your reference to 1.6 means the ratio for the valve "rocker" arms for more lift. Stock arms I belive are 1.5.

A little late but I think this is what you are looking for:

CONTROL ARM, UPPER The upper control arm is unique to the Fiero. If parts are interchanged from other Fieros, note that beginning in 1986 GM provided a revised design with 1.6 degrees more positive camber. This arm was listed as a replacement for '84-85 Fieros (in the event replacement was required due to damage). Later in 1986 GM reverted to the earlier design. To minimize confusion, we are listing the part numbers for all years so it can be easily determined which control arms are used in each car.

From here:
http://www.fierosails.com/Steering.html

I'm curious if any one has measured the two different arms to determine the lengths. I'm sure I have the longer arms (1.6 version) but would like to confirm.

[This message has been edited by bnevets27 (edited 05-18-2010).]