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Fiero & Chevette Control Arms - interchangeable? by GeNOS
Started on: 03-08-2012 08:14 PM
Replies: 21
Last post by: mattwa on 03-10-2012 12:40 PM
GeNOS
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Report this Post03-08-2012 08:14 PM Click Here to See the Profile for GeNOSSend a Private Message to GeNOSDirect Link to This Post
Hey All,

First post, hopefully its not to long winded and hopefully its in the correct place/part of the forum.

Anyways, to the point. Im from Australia and part of a car club biased on the Holden Gemini, which is pretty much a “chevy chevette/I-mark/opel kaddet”

From a lot of reading we have seen that The front suspension on the fiero was derived from the Chevrolet Chevette, IE the holden gemini

The subject has popped up on our forum a few time regarding the aftermarket Fiero tube front control arms and coil over kits (http://www.westshorefabricators.com/Fiero/KitCarSuspension.htm)

Iv read a heap on a few different chevette and fiero forums that people have mentioned it being a possibility, but was hoping someone here could give a yes no answer, (someone that has seen it done or have done it themselves) that the fiero and chevette upper and lower control arms are inter changeable between cars.. (EXCLUDING the fact that the shock mounts are not going to be correct)

After looking at a stack of photos of the fiero suspension, id put money on them being interchangeable, but due to shipping costs it would be quiet an expensive task to have something shipped over to test fit to find it doesn’t actually match.

iv read a few threads about ball joints, hubs, spindles, brakes etc... all being interchanged between the 2 but nothing 100% on the control arms themselves?

Cheers in advance.
Gene

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Ranzy69
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Report this Post03-08-2012 08:25 PM Click Here to See the Profile for Ranzy69Send a Private Message to Ranzy69Direct Link to This Post
These two lower control arms from the driver's side. 86 fiero SE.
(((The one on the left is super bent though.))) the one on the right is fine.

I hope this helps! If it looks exactly like this then its interchangeable on the chevette that has the exact same control arm. lol.

[img] png image hosting[/img]

[This message has been edited by Ranzy69 (edited 03-08-2012).]

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mattwa
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Report this Post03-08-2012 08:36 PM Click Here to See the Profile for mattwaSend a Private Message to mattwaDirect Link to This Post
No, that is the REAR lower control arm, and not from a Chevette. The front suspension of the Fiero is from the Chevette.

But I do think they are the same, if not very close. I saw a Chevette in a junkyard once here, and it looked pretty damn close. I remember reading someplace that the main difference was the Fiero had a wider track and bigger/better brakes (if that is even believable) then the Chevette had.
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GeNOS
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Report this Post03-08-2012 08:41 PM Click Here to See the Profile for GeNOSSend a Private Message to GeNOSDirect Link to This Post
cant really know for sure from pics.
are they 88 or pre88 fiero arms though??

id be looking at pre88
EG

gemini/chevette




Fiero



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GeNOS
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Report this Post03-08-2012 08:43 PM Click Here to See the Profile for GeNOSSend a Private Message to GeNOSDirect Link to This Post

GeNOS

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quote
Originally posted by mattwa:

No, that is the REAR lower control arm, and not from a Chevette. The front suspension of the Fiero is from the Chevette.

But I do think they are the same, if not very close. I saw a Chevette in a junkyard once here, and it looked pretty damn close. I remember reading someplace that the main difference was the Fiero had a wider track and bigger/better brakes (if that is even believable) then the Chevette had.



yeah from what I have read the cross member itself (from the fiero) is 2" wider. so the tack would be wider in that regard and shouldn't effect the arms themselves
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mattwa
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Report this Post03-08-2012 08:50 PM Click Here to See the Profile for mattwaSend a Private Message to mattwaDirect Link to This Post
The upper control arm looks almost spot on, but the lower...looks pretty different. As you may know, the one attachment point for the Fiero lower control arm is the frame itself, so I would say the lower one would need some work to get it to fit correctly. The crossmember does looks shorter for sure.

Btw, they had only 4 lug wheel bearings?! HA!
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Ranzy69
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Report this Post03-08-2012 08:52 PM Click Here to See the Profile for Ranzy69Send a Private Message to Ranzy69Direct Link to This Post
 
quote
Originally posted by mattwa:

No, that is the REAR lower control arm, and not from a Chevette. The front suspension of the Fiero is from the Chevette.

But I do think they are the same, if not very close. I saw a Chevette in a junkyard once here, and it looked pretty damn close. I remember reading someplace that the main difference was the Fiero had a wider track and bigger/better brakes (if that is even believable) then the Chevette had.


lol I know it is. I took it off. and I said it was from a fiero. Guess I didn't quite get the concept of what the thread's asking.
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GeNOS
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Report this Post03-08-2012 09:00 PM Click Here to See the Profile for GeNOSSend a Private Message to GeNOSDirect Link to This Post
 
quote
Originally posted by mattwa:

The upper control arm looks almost spot on, but the lower...looks pretty different. As you may know, the one attachment point for the Fiero lower control arm is the frame itself, so I would say the lower one would need some work to get it to fit correctly. The crossmember does looks shorter for sure.

Btw, they had only 4 lug wheel bearings?! HA!


those photos dont show it to well, but the chevette rear mount on teh lower also fixes to the frame of the car.. ill try find another pic showing it...

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mattwa
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Report this Post03-08-2012 09:04 PM Click Here to See the Profile for mattwaSend a Private Message to mattwaDirect Link to This Post
 
quote
Originally posted by GeNOS:


those photos dont show it to well, but the chevette rear mount on teh lower also fixes to the frame of the car.. ill try find another pic showing it...


Yea, that's why I wasn't sure, I couldn't see it well.

 
quote
Originally posted by Ranzy69:


lol I know it is. I took it off. and I said it was from a fiero. Guess I didn't quite get the concept of what the thread's asking.


He is asking if the front fiero control arms would interchange within reason with the Chevette, because that is what the design was based off of for 84-87 Fiero's.
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Bloozberry
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Report this Post03-08-2012 09:05 PM Click Here to See the Profile for BloozberrySend a Private Message to BloozberryDirect Link to This Post
On the Chevette suspension, the shock mounts to the upper control arm, where on the Fiero it mounts to the lower control arm.
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GeNOS
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Report this Post03-08-2012 09:08 PM Click Here to See the Profile for GeNOSSend a Private Message to GeNOSDirect Link to This Post
chevette/gemini lower control arm
(these are teh best i can find at the moment.. till i take some photos myself)

you can see the rear lower mount hanging free to mount to the body of the car (like the fiero ones)






fiero arms

[This message has been edited by GeNOS (edited 03-08-2012).]

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Report this Post03-08-2012 09:11 PM Click Here to See the Profile for GeNOSSend a Private Message to GeNOSDirect Link to This Post

GeNOS

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quote
Originally posted by Bloozberry:

On the Chevette suspension, the shock mounts to the upper control arm, where on the Fiero it mounts to the lower control arm.


as per original post, excluding th efact the shock mount is wrong. as it wont mater due to aftermarket coilover conversion
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Report this Post03-08-2012 09:16 PM Click Here to See the Profile for mattwaSend a Private Message to mattwaDirect Link to This Post
Oh ok! Those look just like the 84 front control arms. So I would say, from what I can see and tell, they will interchange within reason excluding the shock, but like you said that doesn't matter to you. Don't hold it against me though.
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GeNOS
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Report this Post03-08-2012 09:21 PM Click Here to See the Profile for GeNOSSend a Private Message to GeNOSDirect Link to This Post
here we go.
chevette/gemini lower




upper
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mattwa
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Report this Post03-08-2012 09:23 PM Click Here to See the Profile for mattwaSend a Private Message to mattwaDirect Link to This Post
Again, it looks like the same exact thing as the Fiero control arms.

[This message has been edited by mattwa (edited 03-08-2012).]

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GeNOS
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Report this Post03-08-2012 09:30 PM Click Here to See the Profile for GeNOSSend a Private Message to GeNOSDirect Link to This Post
are there any other "off the shelf" kits available other then this one?

http://www.westshorefabrica...KitCarSuspension.htm
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mattwa
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Report this Post03-08-2012 09:36 PM Click Here to See the Profile for mattwaSend a Private Message to mattwaDirect Link to This Post
Not that I know of.
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Report this Post03-08-2012 10:28 PM Click Here to See the Profile for GeNOSSend a Private Message to GeNOSDirect Link to This Post
too easy. thanks for the info.

ill see if i can find someone whos done the swap. or a test fit at least so i can be 100%
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Report this Post03-08-2012 10:31 PM Click Here to See the Profile for GeNOSSend a Private Message to GeNOSDirect Link to This Post

GeNOS

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whats a pair of 2nd hand stock/factory control arms worth? might be a cheaper option to have shipped over before the after market kit
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mattwa
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Report this Post03-08-2012 10:35 PM Click Here to See the Profile for mattwaSend a Private Message to mattwaDirect Link to This Post
 
quote
Originally posted by GeNOS:

whats a pair of 2nd hand stock/factory control arms worth? might be a cheaper option to have shipped over before the after market kit


For sure, Fiero 84-87 front control arms are a dime a dozen. Not really worth all that much.
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Report this Post03-09-2012 12:34 AM Click Here to See the Profile for L67Send a Private Message to L67Direct Link to This Post
Looking at all of this heavy steel and cast iron reminds me of farm equipment.
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mattwa
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Report this Post03-10-2012 12:40 PM Click Here to See the Profile for mattwaSend a Private Message to mattwaDirect Link to This Post
Both 88 suspensions are heavier then pre-88's...but I get what you are saying. All suspension parts on more modern cars are aluminum I'm sure.
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