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'91/'92 highrise Z28 spoiler mod, *Finished, See Post #121!*

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Old Jul 6, 2016 | 03:02 PM
  #151  
Tibo's Avatar
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Car: 1991 Z28 Vert
Engine: 383 single plane efi
Transmission: T-56
Axle/Gears: 8.8 with 3.73s
Re: '91/'92 highrise Z28 spoiler mod, *Finished, See Post #121!*

So I'm working on putting the spoiler on my Camaro. I'm taking a slightly different approach than you with the sides and making the fenders taller. I was wondering if you used all four pairs of the spoiler's mounting studs or did you remove the outers and only use the inside pairs?
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Old Dec 4, 2016 | 09:15 PM
  #152  
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From: Desert
Car: 1991 Z28 Vert
Engine: 383 single plane efi
Transmission: T-56
Axle/Gears: 8.8 with 3.73s
Re: '91/'92 highrise Z28 spoiler mod, *Finished, See Post #121!*

The OP seems have left the thirdgen community. Thought I'd post pictures of my finished product. I took the high rise spoiler mod a step further and actually raised and refinished the top of the rear fenders, raised the front of the rear fenders (portion by the back of the door) and then extended down the side pillars of the spoiler. It's a big undertaking, I don't advise you do this unless you are a competent welder and body experience. I also wouldn't even think about asking a body shop to do this as the bill would be enormous.

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Old Dec 4, 2016 | 09:21 PM
  #153  
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From: Desert
Car: 1991 Z28 Vert
Engine: 383 single plane efi
Transmission: T-56
Axle/Gears: 8.8 with 3.73s
Re: '91/'92 highrise Z28 spoiler mod, *Finished, See Post #121!*

When you remove the urethane wrap around spoiler pieces you'll see why they wanted to cover it up with a simple cap...







The last picture shows the height difference between the top of the fenders and the trunk lid is measured at 1/4" WITHOUT the weatherstripping. With the weatherstripping it goes up to 3/8 - 1/2". The water channel also has a big and uneven gap.
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Old Dec 4, 2016 | 09:24 PM
  #154  
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From: Desert
Car: 1991 Z28 Vert
Engine: 383 single plane efi
Transmission: T-56
Axle/Gears: 8.8 with 3.73s
Re: '91/'92 highrise Z28 spoiler mod, *Finished, See Post #121!*







The expanding foam was only to hold the top in place while I welded in the metal for the sides. I didn't use fiberglass on the sides.
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Old Dec 4, 2016 | 09:28 PM
  #155  
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From: Desert
Car: 1991 Z28 Vert
Engine: 383 single plane efi
Transmission: T-56
Axle/Gears: 8.8 with 3.73s
Re: '91/'92 highrise Z28 spoiler mod, *Finished, See Post #121!*





Rough sanding the first batch of filler



You can see how the front of the fender had to be raised and a new cap created since the urethane piece capped it before. The tonneau cover isn't latched in the picture

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Old Dec 4, 2016 | 09:34 PM
  #156  
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From: Desert
Car: 1991 Z28 Vert
Engine: 383 single plane efi
Transmission: T-56
Axle/Gears: 8.8 with 3.73s
Re: '91/'92 highrise Z28 spoiler mod, *Finished, See Post #121!*

how the spoiler fits when put in place, so you have to extend it down.











Finish creating the sides with fiberglass, do your filler work and paint.
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Old Mar 15, 2017 | 07:13 PM
  #157  
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Car: 1992 Pontiac Trans Am Convertible
Engine: 5.0L 305ci TPI
Transmission: 5 Speed Manual, World Class T-5
Axle/Gears: 3.08
Re: '91/'92 highrise Z28 spoiler mod, *Finished, See Post #121!*

That is really sweet, Tibo!
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Old Mar 15, 2017 | 08:59 PM
  #158  
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From: Desert
Car: 1991 Z28 Vert
Engine: 383 single plane efi
Transmission: T-56
Axle/Gears: 8.8 with 3.73s
Re: '91/'92 highrise Z28 spoiler mod, *Finished, See Post #121!*

Originally Posted by 1992 Trans Am
That is really sweet, Tibo!
Thanks, if you have welding and bodywork experience it's not hard, just time consuming.
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Old Sep 4, 2018 | 09:40 PM
  #159  
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From: Ramsey, MN
Car: 1991 Z28 Convertible
Engine: 5.0 V8
Transmission: auto
Re: '91/'92 highrise Z28 spoiler mod, started fiberglass 3/5/11

Do the bolt holes line up at all when going from the factory spoiler to the wing?
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Old Sep 4, 2018 | 09:48 PM
  #160  
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From: Desert
Car: 1991 Z28 Vert
Engine: 383 single plane efi
Transmission: T-56
Axle/Gears: 8.8 with 3.73s
Re: '91/'92 highrise Z28 spoiler mod, started fiberglass 3/5/11

Originally Posted by shaggyowl
Do the bolt holes line up at all when going from the factory spoiler to the wing?
No. I had to weld shut the convertible's stock spoiler mounting holes and drill new holes for the spoiler. I cover it some detail in my build thread.
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