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91 Convertible Spoiler

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Old Jun 19, 2006 | 04:40 PM
  #1  
shephee's Avatar
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91 Convertible Spoiler

Can anyone tell me if the spoiler w/ the third brake light is the same for a convertible as the other models??

Thanks
Ed
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Old Jun 19, 2006 | 04:48 PM
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From: Stavanger area, Norway
Car: 86 IROC Convt
Engine: 305TPI
Transmission: TH700R4
Hello Ed,

No, the convertible rear spoiler is different from the coupe spoiler.


Ken
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Old Jun 19, 2006 | 05:37 PM
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From: Hammond IN
Car: 1989 RS convertible
Engine: 305 TBI LO3
Transmission: TH-700-R4
Axle/Gears: stock axles 3.73 LSD
actually the center piece is the same, the sides are different thats all
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Old Jun 19, 2006 | 05:46 PM
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From: Ft Myers, FL
Car: 92 Firebird Conv
Engine: 305
Transmission: T-56 w/3.42 Posi
Originally Posted by gray89vert
actually the center piece is the same, the sides are different thats all
are you positive of this?? i kind of need a center spoiler. If its the same i just get one off a junk car.
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Old Jun 19, 2006 | 06:32 PM
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From: Hacienda Heights, CA
Car: 90 RS 'Vert, 88 IROC-Z, 88 Firebird
Engine: 305 ci tbi, 305 ci tpi, 350 ci tpi
Transmission: WC-T5, WC-T5, 700R4
Axle/Gears: 3.45, 3.27, 3.27
All 3 pieces are unique to the convertible. The only part that interchanges with the coupe is the HMSL (high mount stop light) lens. It is the same as the coupes from 86-90.

Lon
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Old Jun 19, 2006 | 07:01 PM
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From: O'Fallon, MO
Car: 1991 Z28 convertible built 3/1/1990
Engine: Cammed 6.0L LSX
Transmission: T56
Axle/Gears: custom Ford 8.8", 4.10 gears
i'm pretty sure these guys are right. the center part of the spoiler on my IROC is more rounded on the edges...but it could just be a different style spoiler from 86-90/91-92. however i still believe the convertible center piece is specific to the convertible model only
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Old Jun 19, 2006 | 07:37 PM
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From: Tucson, Arizona USA
Car: 1987 Z28 Convertible
Engine: 305 TPI
Transmission: 5-speed
Lon is correct. All three pieces are different. He's the convertible expert here. And if that doesn't suffice, I'll step in and say the same thing. Today, I own one convertible and one coupe. If anyone doubts us, say so and I'll take a couple of very definitive pics of both, showing the difference.
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Old Jun 19, 2006 | 08:42 PM
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From: Hammond IN
Car: 1989 RS convertible
Engine: 305 TBI LO3
Transmission: TH-700-R4
Axle/Gears: stock axles 3.73 LSD
hmm, well you learn something new everyday.
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Old Jun 19, 2006 | 08:54 PM
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From: Boosted Land
Car: 92 Z28
Engine: Boosted LSX
Deff. different. I sold the center section off my vert to a buddy for like $100shipped.

put a 91-92Z on mine.
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Old Jun 19, 2006 | 09:01 PM
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From: Hacienda Heights, CA
Car: 90 RS 'Vert, 88 IROC-Z, 88 Firebird
Engine: 305 ci tbi, 305 ci tpi, 350 ci tpi
Transmission: WC-T5, WC-T5, 700R4
Axle/Gears: 3.45, 3.27, 3.27
Originally Posted by TPl383
Deff. different. I sold the center section off my vert to a buddy for like $100shipped.

put a 91-92Z on mine.
They got a deal. I paid $200 for a spare center section of the spoiler and picked it up. I seem to recall that one of the aftermarket parts suppliers that makes spoilers and hoods makes reproductions of the convertible spoiler in fiberglass.

Lon
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Old Jun 19, 2006 | 09:10 PM
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From: Boosted Land
Car: 92 Z28
Engine: Boosted LSX
ya he did. His blew off on the hiway and mine was just collecting dust so I figured what the heck.

I still have other parts i should dig out Im not usin like the rear pannels by the seats.
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Old Jun 20, 2006 | 11:50 AM
  #12  
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From: Boise, Id
Car: 1991 firebird vert
Engine: 350 crate
Transmission: Automatic
Axle/Gears: Stock
unfortunatly it isnt exactly the same. the hard top spoilers were one peice since they didnt have a trunk ours was split into 3 peices for the trunk. There is a site out there( i lost the bookmarks) that is making new spoilers for the 3rd gen verts again, just do some searching for it i promise it is out there somewhere.
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Old Jun 23, 2006 | 12:11 PM
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From: Long Beach, CA
Engine: 305 TPI (LB9)
Transmission: WC T-5
Originally Posted by lonsal
All 3 pieces are unique to the convertible. The only part that interchanges with the coupe is the HMSL (high mount stop light) lens. It is the same as the coupes from 86-90.

Lon

'86 had the hatch glass mounted CHMSL; '87-'90 had the spoiler mounted CHMSL.

The only difference that I've noticed in the '87-'90 years is the 'sport coupes' had a slightly different CHMSL light, unique to the sport coupe spoiler (which is slightly raised off of the hatch lid). It is almost impossible to tell the difference on the car, but once you remove the lights and put them side by side, there is a slight difference.
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Old Jun 23, 2006 | 12:30 PM
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From: Hacienda Heights, CA
Car: 90 RS 'Vert, 88 IROC-Z, 88 Firebird
Engine: 305 ci tbi, 305 ci tpi, 350 ci tpi
Transmission: WC-T5, WC-T5, 700R4
Axle/Gears: 3.45, 3.27, 3.27
I couldn't recall off the top of my head if it was 85 or 86 that had the one-year HMSL attached to the exterior of the upper hatch. To satisfy my curiosity I'll have to look up part numbers to confirm a difference in HMSL on the SC model, I'm not aware of it.

Lon
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Old Jun 23, 2006 | 01:52 PM
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From: Stavanger area, Norway
Car: 86 IROC Convt
Engine: 305TPI
Transmission: TH700R4
I remember reading a long time ago, shortly after I got my vert, that the smaller third brake light found on the 86/87 convertibles were actually a Ford light *shrug*... Does anyone know if there is any truth to that?? And if so - which Ford?


Ken
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Old Jun 23, 2006 | 02:17 PM
  #16  
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From: Long Beach, CA
Engine: 305 TPI (LB9)
Transmission: WC T-5
Originally Posted by lonsal
I couldn't recall off the top of my head if it was 85 or 86 that had the one-year HMSL attached to the exterior of the upper hatch. To satisfy my curiosity I'll have to look up part numbers to confirm a difference in HMSL on the SC model, I'm not aware of it.

Lon
Lon,

Others have called me on this as well and while I'm not sure if there is a part number difference, I've found a couple of sport coupes in the boneyard over the years that do, in fact, have a slightly different 3rd brake light, specific to the sport coupe spoiler. I'll try and dig around the garage this weekend and see if I can turn one of them up and post pictures.

1986 was the first year that 3rd brake lights were required on passenger cars in the US, and it was obvious (as was possibly the case with the F-body) that many manufacturer's tooling was not quite ready to incorporate the change into the car bodies, as many cars during the first couple of years of the requirement had lights that looked like an afterthought rather than an integral part of the design.


Originally Posted by ChevyKen
I remember reading a long time ago, shortly after I got my vert, that the smaller third brake light found on the 86/87 convertibles were actually a Ford light *shrug*... Does anyone know if there is any truth to that?? And if so - which Ford?
Ken,

I have also heard this, but I, too, am not sure which model Ford is was. Being that the early CHMSL's were made in Italy (stamped in the plastic), it's quite possible that the same light model was used on a few different cars.
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