Convertibles Discussed here are problems and solutions to convertible specific questions, including difficult to find part numbers and other convertible tech help.

Spoiler door extension

Thread Tools
 
Search this Thread
 
Old 06-22-2016, 10:22 PM
  #1  
Member
Thread Starter
iTrader: (18)
 
Eric-86sc's Avatar
 
Join Date: Jan 2014
Location: NJ
Posts: 412
Likes: 0
Received 1 Like on 1 Post
Car: 90 formula, 89 formula 350 vert
Engine: 305, 355
Transmission: T5, t56
Axle/Gears: 3:45 9 bolt, 8.8 3:73
Spoiler door extension

Does anyone know about these side spoilers here? Flat when ending at the squatter panel with a Little piece that mounts on the door? I've heard from some people it was optional and from others it's an 88 only part. Wondering what the true story is. Thanks in advance
Attached Thumbnails Spoiler door extension-image.jpeg  
Old 06-22-2016, 10:23 PM
  #2  
Member
Thread Starter
iTrader: (18)
 
Eric-86sc's Avatar
 
Join Date: Jan 2014
Location: NJ
Posts: 412
Likes: 0
Received 1 Like on 1 Post
Car: 90 formula, 89 formula 350 vert
Engine: 305, 355
Transmission: T5, t56
Axle/Gears: 3:45 9 bolt, 8.8 3:73
Re: Spoiler door extension

..
Attached Thumbnails Spoiler door extension-image.jpeg  
Old 06-27-2016, 10:26 AM
  #3  
Senior Member

iTrader: (6)
 
rarebmx's Avatar
 
Join Date: Oct 2011
Location: Imperial, Missouri
Posts: 912
Received 15 Likes on 13 Posts
Car: 89 IROC/89 Vert/87 Vert/89 GTA Vert
Engine: 5.7/5.0/5.0/5.7
Transmission: 700R4
Axle/Gears: 9" 2.77/9" 3:23/9" 3:42
Re: Spoiler door extension

You're pictures are tough to put in perspective. The only door extension pieces came in all 87 ASC cars, all 86 ASC cars & VERY early production 88 ASC cars.

I have an 87 here with them
Old 06-27-2016, 09:35 PM
  #4  
Member
Thread Starter
iTrader: (18)
 
Eric-86sc's Avatar
 
Join Date: Jan 2014
Location: NJ
Posts: 412
Likes: 0
Received 1 Like on 1 Post
Car: 90 formula, 89 formula 350 vert
Engine: 305, 355
Transmission: T5, t56
Axle/Gears: 3:45 9 bolt, 8.8 3:73
Re: Spoiler door extension

Thanks for the reply, I know they're not the best pics but the parts are kind of in storage so I couldn't put them up against my car. These are the ones I'm talking about. Looking at pictures of 87 verts, every single one does seem
To have this part
Attached Thumbnails Spoiler door extension-image.jpg  
Old 06-28-2016, 10:25 AM
  #5  
Junior Member

 
madness's Avatar
 
Join Date: Jul 2009
Location: La Mesilla New Mexico
Posts: 63
Likes: 0
Received 0 Likes on 0 Posts
Car: 1991 Z28 Convertible
Engine: 5.0 TPI
Transmission: 5 Speed
Re: Spoiler door extension

Those are cool, wish I could find a set.
Old 06-29-2016, 09:26 PM
  #6  
Supreme Member

iTrader: (101)
 
my82roc's Avatar
 
Join Date: Feb 2004
Location: Levittown Pa
Posts: 1,914
Likes: 0
Received 17 Likes on 16 Posts
Car: 89 Iroc Convertible
Engine: 305 TPI
Transmission: 700R4
Axle/Gears: 3.27 Posi 9 bolt PBR
Re: Spoiler door extension

I had a pair that I pulled off an 88 camaro convertible at a local junkyard.
Old 06-29-2016, 09:32 PM
  #7  
Senior Member

iTrader: (6)
 
rarebmx's Avatar
 
Join Date: Oct 2011
Location: Imperial, Missouri
Posts: 912
Received 15 Likes on 13 Posts
Car: 89 IROC/89 Vert/87 Vert/89 GTA Vert
Engine: 5.7/5.0/5.0/5.7
Transmission: 700R4
Axle/Gears: 9" 2.77/9" 3:23/9" 3:42
Re: Spoiler door extension

Pictures from my early 87 that's in the procean of restoration






How about some of these too?

Old 06-29-2016, 09:58 PM
  #8  
Member
Thread Starter
iTrader: (18)
 
Eric-86sc's Avatar
 
Join Date: Jan 2014
Location: NJ
Posts: 412
Likes: 0
Received 1 Like on 1 Post
Car: 90 formula, 89 formula 350 vert
Engine: 305, 355
Transmission: T5, t56
Axle/Gears: 3:45 9 bolt, 8.8 3:73
Re: Spoiler door extension

Wow, now what's the story on those tail light mounted trim pieces? 87 only or part of a complete package with the door extensions?
Old 06-29-2016, 10:02 PM
  #9  
Senior Member

iTrader: (6)
 
rarebmx's Avatar
 
Join Date: Oct 2011
Location: Imperial, Missouri
Posts: 912
Received 15 Likes on 13 Posts
Car: 89 IROC/89 Vert/87 Vert/89 GTA Vert
Engine: 5.7/5.0/5.0/5.7
Transmission: 700R4
Axle/Gears: 9" 2.77/9" 3:23/9" 3:42
Re: Spoiler door extension

Originally Posted by Eric-86sc
Wow, now what's the story on those tail light mounted trim pieces? 87 only or part of a complete package with the door extensions?
1987 IROC. GM build date 1/87 but not a 6th digit of VIN "3" car. 6th digit is a "2", which is a "special edition". Was sent off to ASC through a dealer to be converted & this is what ASC was doing with the early cars.
Old 07-21-2016, 12:39 AM
  #10  
Supreme Member

iTrader: (15)
 
Tibo's Avatar
 
Join Date: Jun 2003
Location: Desert
Posts: 5,025
Received 76 Likes on 66 Posts
Car: 1991 Z28 Vert
Engine: 383 single plane efi
Transmission: T-56
Axle/Gears: 8.8 with 3.73s
Re: Spoiler door extension

Who knows with ASC.... Those pieces by the taillights are the tip of the ice berg for questions I'd like to ask them.
Old 07-21-2016, 12:41 AM
  #11  
Supreme Member

iTrader: (15)
 
Tibo's Avatar
 
Join Date: Jun 2003
Location: Desert
Posts: 5,025
Received 76 Likes on 66 Posts
Car: 1991 Z28 Vert
Engine: 383 single plane efi
Transmission: T-56
Axle/Gears: 8.8 with 3.73s
Re: Spoiler door extension

Originally Posted by Eric-86sc
Does anyone know about these side spoilers here? Flat when ending at the squatter panel with a Little piece that mounts on the door? I've heard from some people it was optional and from others it's an 88 only part. Wondering what the true story is. Thanks in advance
I thought all convertibles had them though they may have changed from Year to year. My 91 does but they look slightly different from the pics posted.
Old 07-21-2016, 08:14 PM
  #12  
Member

 
topless87's Avatar
 
Join Date: Feb 2009
Location: Independence, Kansas
Posts: 186
Received 3 Likes on 3 Posts
Car: 1987 IROC-Z Convertable
Engine: 305 TPI
Transmission: 5 Speed BW T-5
Axle/Gears: 3.08 Posi
Re: Spoiler door extension

Originally Posted by rarebmx
1987 IROC. GM build date 1/87 but not a 6th digit of VIN "3" car. 6th digit is a "2", which is a "special edition". Was sent off to ASC through a dealer to be converted & this is what ASC was doing with the early cars.
My '87 is a sixth digit 3 car and I don't have those taillight fins. Mine has the small middle taillight which I have heard are the earlier versions, but it's hard tellin with ASC. It also has the 20th Anniversary Commemory Edition dash pouch also. 5.0L, TPI, 5 speed car.
Old 07-21-2016, 09:18 PM
  #13  
Supreme Member

iTrader: (8)
 
TTOP350's Avatar
 
Join Date: Oct 2001
Location: Il
Posts: 11,694
Received 746 Likes on 505 Posts
Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: Spoiler door extension

A friend had those door pieces on his 88 Camaro but I'm unsure of the build date.
Old 07-21-2016, 09:52 PM
  #14  
Supreme Member

iTrader: (3)
 
92RS_Ttop's Avatar
 
Join Date: Jun 2007
Location: Pennsylvania
Posts: 2,359
Likes: 0
Received 5 Likes on 5 Posts
Car: 1992 Camaro RS
Engine: Rebuilt 350 going in after paint
Transmission: WCT5, 7k & counting behind the 350
Axle/Gears: 4thgen disc rear w/ 3.73 Posi
Re: Spoiler door extension

If I had to guess, I'd say the pieces by the tail lights were their solution to covering the holes in the quarter panels for the regular lip spoiler. Cheaper and easier than welding the holes and painting the car.
Old 07-21-2016, 10:57 PM
  #15  
Supreme Member

iTrader: (15)
 
Tibo's Avatar
 
Join Date: Jun 2003
Location: Desert
Posts: 5,025
Received 76 Likes on 66 Posts
Car: 1991 Z28 Vert
Engine: 383 single plane efi
Transmission: T-56
Axle/Gears: 8.8 with 3.73s
Re: Spoiler door extension

Originally Posted by 92RS_Ttop
If I had to guess, I'd say the pieces by the tail lights were their solution to covering the holes in the quarter panels for the regular lip spoiler. Cheaper and easier than welding the holes and painting the car.
That makes total sense!
Old 07-25-2016, 01:04 AM
  #16  
Senior Member
iTrader: (-1)
 
Brando5641's Avatar
 
Join Date: Oct 2008
Location: Siloam Springs AR.
Posts: 809
Likes: 0
Received 1 Like on 1 Post
Car: 1998 Trans/Am, 1989 RS Camaro
Engine: LS1, LQ9 6.0
Transmission: 4L60E, 4L60E
Axle/Gears: 2.73, 2.73
Re: Spoiler door extension

hmmm never seen that before.
Old 07-25-2016, 10:21 PM
  #17  
TGO Supporter

iTrader: (1)
 
Willie's Avatar
 
Join Date: Jul 1999
Location: Tucson, Arizona USA
Posts: 2,926
Likes: 0
Received 4 Likes on 4 Posts
Car: 1987 Z28 Convertible
Engine: 305 TPI
Transmission: 5-speed
Re: Spoiler door extension

I'm only going to refer to VIN 3 cars. Spoiler door extensions were for the 1987 model year only, BUT ASC still had some stock left after the model year run, so they used them for 1988 convertibles until they ran out.
Attached Thumbnails Spoiler door extension-0410.jpg  
Old 07-30-2016, 10:13 AM
  #18  
Moderator

 
okfoz's Avatar
 
Join Date: Mar 2001
Location: Doghouse ······································ Car: 1989 Formula 350 Vert Engine: 350 L98 Transmission: 700R4 Axle/Gears: B&W 3.27
Posts: 14,235
Received 163 Likes on 118 Posts
Car: 87 Formula T-Top, 87 Formula HT
Engine: 5.1L TPI, 5.0L TPI
Transmission: 700R4, M5
Axle/Gears: Sag 3.73, B&W 3.45
Re: Spoiler door extension

Originally Posted by Willie
I'm only going to refer to VIN 3 cars. Spoiler door extensions were for the 1987 model year only, BUT ASC still had some stock left after the model year run, so they used them for 1988 convertibles until they ran out.
That is my inclining as well...
Old 07-30-2016, 02:53 PM
  #19  
Member

 
topless87's Avatar
 
Join Date: Feb 2009
Location: Independence, Kansas
Posts: 186
Received 3 Likes on 3 Posts
Car: 1987 IROC-Z Convertable
Engine: 305 TPI
Transmission: 5 Speed BW T-5
Axle/Gears: 3.08 Posi
Re: Spoiler door extension

Since I've had mine since 88 I agree. ASC factory cars. My vin has a funny 9th digit that isn't in the decodes that I have found and that letter is "X" and I am kinda assuming that meant send this car, before the top is assembled on it, to ASC for conversion and the 87's like mine all had the door extensions. My wifes doctor drove a 88 vert and it didn't have them on it. Just MTC.
Old 07-30-2016, 02:54 PM
  #20  
Member

 
topless87's Avatar
 
Join Date: Feb 2009
Location: Independence, Kansas
Posts: 186
Received 3 Likes on 3 Posts
Car: 1987 IROC-Z Convertable
Engine: 305 TPI
Transmission: 5 Speed BW T-5
Axle/Gears: 3.08 Posi
Re: Spoiler door extension

So if you DO have a 88 then it is a very early 88.
Old 07-31-2016, 09:43 PM
  #21  
Moderator

 
okfoz's Avatar
 
Join Date: Mar 2001
Location: Doghouse ······································ Car: 1989 Formula 350 Vert Engine: 350 L98 Transmission: 700R4 Axle/Gears: B&W 3.27
Posts: 14,235
Received 163 Likes on 118 Posts
Car: 87 Formula T-Top, 87 Formula HT
Engine: 5.1L TPI, 5.0L TPI
Transmission: 700R4, M5
Axle/Gears: Sag 3.73, B&W 3.45
Re: Spoiler door extension

Originally Posted by topless87
Since I've had mine since 88 I agree. ASC factory cars. My vin has a funny 9th digit that isn't in the decodes that I have found and that letter is "X" and I am kinda assuming that meant send this car, before the top is assembled on it, to ASC for conversion and the 87's like mine all had the door extensions. My wifes doctor drove a 88 vert and it didn't have them on it. Just MTC.

The 9th digit is a check digit... it is not hard to calculate, but without a computer it takes a min or two. Check digits can be any number from 1 thru 9 and they can be a 0 (zero) or an X. More or less you give weight to each digit position within the VIN and each letter is given a numerical value, for example an A is worth 1, a B is 2, but a J is also worth 1, Some letters are not used like the Letter I, O or Q. Each position in the VIN has a value, and then you multiply the value of the number and the position value, then You add all of your calculations together then divide them by 11. If you have a remainder of 10 then that is an X, a remainder of 1 is 1, a 2 is 2 etc...

This might help https://en.wikibooks.org/wiki/Vehicl...s)/Check_digit
Old 08-05-2016, 09:01 PM
  #22  
Supreme Member

 
abray1's Avatar
 
Join Date: May 2005
Location: Malvern, Arkansas
Posts: 1,044
Likes: 0
Received 3 Likes on 3 Posts
Car: 90 IROC 2-92 Zs blk vert & prpl
Engine: stealth ram brodix track 1 ful port
Transmission: 700r4 4l80e
Axle/Gears: iroc 375 lokr 92 Z 277 pos vert 327
Re: Spoiler door extension

I've never seen those before I thought all asc cars were the same. I learned something today.
Old 08-11-2016, 07:28 AM
  #23  
Moderator

 
okfoz's Avatar
 
Join Date: Mar 2001
Location: Doghouse ······································ Car: 1989 Formula 350 Vert Engine: 350 L98 Transmission: 700R4 Axle/Gears: B&W 3.27
Posts: 14,235
Received 163 Likes on 118 Posts
Car: 87 Formula T-Top, 87 Formula HT
Engine: 5.1L TPI, 5.0L TPI
Transmission: 700R4, M5
Axle/Gears: Sag 3.73, B&W 3.45
Re: Spoiler door extension

Originally Posted by abray1
I've never seen those before I thought all asc cars were the same. I learned something today.
Well there is more than just that. There are 4 different tops
85-88
89
90-91
92

The later 89-92 are wider in the rear than the 85-88
The trunk pieces changed mid 1991 to just carpet, ( all 91-92 Firebirds got the carpet AFAIK) but the Camaro started with the plastic pieces then went to the carpet mid year, around Aug of 1990 or so I think.

John
Old 08-29-2016, 11:40 PM
  #24  
Member

 
neilcase's Avatar
 
Join Date: May 2012
Location: Pacific Grove CA
Posts: 206
Received 13 Likes on 10 Posts
Car: 1987 IROC-Z convertible
Engine: 5.0
Transmission: 700R
Axle/Gears: 2:77
Re: Spoiler door extension

Originally Posted by okfoz
Well there is more than just that. There are 4 different tops
85-88
89
90-91
92

The later 89-92 are wider in the rear than the 85-88
The trunk pieces changed mid 1991 to just carpet, ( all 91-92 Firebirds got the carpet AFAIK) but the Camaro started with the plastic pieces then went to the carpet mid year, around Aug of 1990 or so I think.

John
I can't be certain of this but because I currently have an 87 Convertible thats about to get a new top and I just recently sold an 88 convertible that I did put a new top on, I have done a good deal of research on this fact that there are 3 different size tops. It is my understanding that ALL 87 are the same size and that would be the 50 inch wide version. Then sometime during the middle of 88 production the widened them to 51 inches. So 88 is the one year that can be confusing because it could be 50 or 51. After 88 they were all 51 but they simply changed the size of the window and added an interior headliner in 91 I believe but don't quote me on that one.
Old 08-29-2016, 11:46 PM
  #25  
Member

 
neilcase's Avatar
 
Join Date: May 2012
Location: Pacific Grove CA
Posts: 206
Received 13 Likes on 10 Posts
Car: 1987 IROC-Z convertible
Engine: 5.0
Transmission: 700R
Axle/Gears: 2:77
Re: Spoiler door extension

Yep those are the quarter panel cover trim extensions that all 87's came with and the early 88's. Then they were never used again. IMPORTANT NOTE: the long trim pieces that go on top of the quarters that would meet up with these little "spears" are different on the sets that have the spears vs the sets that didn't. The sets that came with the spears are more squared off and those that didn't are more rounded. I have a couple sets of each. Also note, these quarter trim cap pieces getting dry and brittle over the years and get spider cracks in them. Don't just fill those cracks and sand them and then paint your car. The cracks WILL come back right thru your brand new paint. Yep, learned that the hard way
Old 05-23-2020, 12:55 AM
  #26  
Junior Member
 
Slarch99's Avatar
 
Join Date: Apr 2020
Location: Effingham, IL
Posts: 6
Likes: 0
Received 0 Likes on 0 Posts
Car: 1988 Camaro Convertible
Engine: 305 TBI
Re: Spoiler door extension

Where can I find one of these? 3D printing is an option too
Old 06-04-2020, 07:13 PM
  #27  
Junior Member
 
jburden's Avatar
 
Join Date: Jan 2017
Location: Lakewood, PA
Posts: 27
Likes: 0
Received 1 Like on 1 Post
Car: 1988 Camaro Convertible
Engine: 5.0 liter
Transmission: Automatic
Re: Spoiler door extension

My '88 ASC does not have them.
Old 06-05-2020, 06:48 PM
  #28  
Moderator

 
okfoz's Avatar
 
Join Date: Mar 2001
Location: Doghouse ······································ Car: 1989 Formula 350 Vert Engine: 350 L98 Transmission: 700R4 Axle/Gears: B&W 3.27
Posts: 14,235
Received 163 Likes on 118 Posts
Car: 87 Formula T-Top, 87 Formula HT
Engine: 5.1L TPI, 5.0L TPI
Transmission: 700R4, M5
Axle/Gears: Sag 3.73, B&W 3.45
Re: Spoiler door extension

I want to think it was an 86-87 offering, and the early early cars in 88 might have had them until they ran out of them...
Old 06-08-2020, 10:02 AM
  #29  
Member

 
Chris 84TA's Avatar
 
Join Date: Jul 1999
Location: Poteau, OK, USA - Age: 44 - AKA 84TAVeRT
Posts: 361
Received 57 Likes on 45 Posts
Car: 1984 Trans Am Convertible
Engine: 355
Transmission: WCT5
Axle/Gears: 3.73
Re: Spoiler door extension

someone should scan these for 3d printing.

I think these would be a good candidate.

especially since they are hard to find parts.

later,
Chris
Old 06-08-2020, 10:16 AM
  #30  
Moderator

 
okfoz's Avatar
 
Join Date: Mar 2001
Location: Doghouse ······································ Car: 1989 Formula 350 Vert Engine: 350 L98 Transmission: 700R4 Axle/Gears: B&W 3.27
Posts: 14,235
Received 163 Likes on 118 Posts
Car: 87 Formula T-Top, 87 Formula HT
Engine: 5.1L TPI, 5.0L TPI
Transmission: 700R4, M5
Axle/Gears: Sag 3.73, B&W 3.45
Re: Spoiler door extension

They would be kind of difficult to 3D Print. They would have to be made from ABS. It would be easier to make molds from them and then duplicate them with fiberglass like the originals.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
PurelyPMD
Exterior Parts for Sale
3
06-08-2016 05:58 AM
brett89
Interior
5
05-23-2016 06:50 PM
stegal
Body
2
04-02-2016 10:43 PM
Gecz28
Body
1
03-26-2016 04:07 PM



Quick Reply: Spoiler door extension



All times are GMT -5. The time now is 02:07 PM.