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Fiero manual rack on a 3rd gen

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Old Aug 8, 2009 | 11:37 PM
  #1  
Pocket's Avatar
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From: NC
Car: 91 Trans Am
Fiero manual rack on a 3rd gen

Pros
The whole rack weighs about as much as the 3rd gen centerlink and rod ends
Fits great, stock Fiero steering shaft also fits excellent
Clears hedman headers with 1/2" at the closest
Alot smaller than stock box and linkage
Mine was free of a car I scrapped, most JYs carry Fieros and they can be had for <$50

Cons:
Reduced turning radius like all racks
K-member notch
Not a direct bolt in
No aftermarket support

Notes:
Spindle arm nut to nut a 3rd gen is 49.5" across the linkage. Fiero total length is 53". Mine was set at enough angle that the excess length was taken care of for acceptable alignment. Solutions would be to use a die and cut more threads on the inner tie rod and grind a bit of the length off if you couldnt move the end in enough

I got carried away with my K member notch, it doesnt have to be that big. I dont know if tubular K members will clear that area since each company has a different design

The steering column mounts slightly different with the Fiero shaft. 3rd gen used a thru bolt, Fiero uses a pinch style similar to the shaft to box connection. Solutions is by grinding a small notch for the bolt on the column end

Pics:




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Old Aug 9, 2009 | 09:48 AM
  #2  
SystemX's Avatar
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From: Michigan
Car: 1989 Pontiac Trans Am GTA
Engine: 5.7L L98
Transmission: 700R4
Axle/Gears: 3.27:1
Re: Fiero manual rack on a 3rd gen

Wow, that's an adventurous swap! I have an 87 Fiero I'm just getting ready to start parting out too....

I just put a manual steering gearbox in my 89 GTA about 2 weeks ago. If I'd have seen your thread before then I would have given this idea some serious thought.

Have you driven the car yet? How does it handle on the road?
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Old Aug 10, 2009 | 09:06 AM
  #3  
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From: Wichita, KS
Car: 88 Trans Am GTA
Engine: 5.1L Gen III
Transmission: T56
Axle/Gears: 3.70
Re: Fiero manual rack on a 3rd gen

Originally Posted by Pocket
Solutions would be to use a die and cut more threads on the inner tie rod and grind a bit of the length off if you couldnt move the end in enough...

Pics:
Don't ever cut threads with a die unless you have no other choice, its a sure way to break the part off right at the new threads.

Before you drive the car I highly suggest you add some gussetting to your mounts, you've got welds in bending as well as some very small looking angles. Triangulate the mount out into the k-member in the picture above. It may not be a bad idea to add another angle on the top of the rack mount as well. IMO, your going to break something and I pray nobody gets hurt in the process.

Also, rack length as well as its placement in the chassis is going to have a large effect on bumpsteer, the aftermarket kits take care of that with bump steer kit letting you move your outer tie rod down, a kit like this would take car of your rack length problem as well. With proper placement you should be able to get by without a kit though.

Last edited by Roostmeyer; Aug 10, 2009 at 09:12 AM.
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Old Apr 1, 2014 | 11:32 PM
  #4  
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From: PHX
Car: 91' RS
Engine: 310 C.I.D. + n2o
Transmission: T-5
Axle/Gears: built 10 bolt 3.73's
Re: Fiero manual rack on a 3rd gen

So obviously this thread is very old, the pics aren't showing anymore. Is there any way you can post the pics again Pocket. I'm planning on doing this and some illustration would be awesome to help me thru the process.
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Old Apr 2, 2014 | 06:24 AM
  #5  
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Car: 91 Trans Am
Re: Fiero manual rack on a 3rd gen

I deleted them a long time ago. Same basic process as any common RP swap. Weld new mounts on the k-member and clearance the steering shaft
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