I have an 87 Trans Am w/305 4bbl & 5spd w/48800 miles. A few things;
I never got the window sticker so I was wondering if there was a way
to check on some of the non obvious options (lmtd slip, etc.)to get
all the details.
Second, has anyone else had a problem with the rear spoiler paint
cracking on a semi regular basis? I need to paint the car (it's red)
but I would hate to have this happen again (spoiler has been painted
Finally, any mods that can be done to get more HP? The car is stock
except for a high performance chip I put in 15 years ago.
The way to tell what options your car has is by the RPO codes. RPO
means Regular Production Order. These codes are on the decal on the bottom
of the consoul lid.
Thirdgen.org has a free RPO decoder that will tell you exactly what
those codes mean.
As for Perfromance, there is a pleathra of things you can do. How fast
do you want to go, how much do you want to spend, and how far from stock
would you want to be?
On the spoiler is it the Wrap around Aero-Wing? Ot the regulaer
Thank you for the RPO info. That # is on the inside of the center
As far as the performance issue, not too many $$ and not too far from
stock. I remember checking into this back in 89-90, but there weren't
too many options then. I'm thinking of a less restrictive exhaust
system to start and maybe some carb mods, but I don't know how that
all works with the computer. It used to be that any changes made the
computer tried to compensate for and there wasn't much improvement,
not to mention that there was very little room for headers and dual
The spoiler is the typical 86-90 type, all one piece wrapping around
the rear window (definately not the firebird style but I'm not sure
what the difference is between the wrap around and the aero wing).
The "third" brake light is in the spoiler if that helps.
You car has what is called the Aero-Wing. If it keeps spliting most
likely the bolt plates in it are rusting, and its junk.
The best low buck power increase you can do is to swap your 305 for a
The wrap-around spoiler IS the aerowing. ;o)
They're made of a type of rubber (steel cored) and are prone to cracking and
rotting out. There is a fibreglass replica available.
Do you have the stock hatch/spoiler? I thought only the GTAs and the
Formulas got the aerowing from the factory.
Thanks for the feedback Charles.
Yes, the entire car is stock. Bought it new in 86. I'll look into
that fiberglass replacement (do they come in colors or do they need to
The spoiler I have now doesn't seem to be cracked or split, just the
paint. However I am guessing that the temp changes in this area cause
the spoiler to expand and contract and no matter how good the paint is
it will continue to do the same thing.
Yeah, I've got an 89 T/A with the aero wing.
Edrin, as far as I understand the front bumper and the aero wing need paint
that has some kind of additive mixed into the paint to reduce the chance of
it cracking. I don't remember what it was but I've heard it mentioned
before. Hopefully someone can chime in and let you know what it is or tell
me if I'm way off base.
The Fiberglass units come in gel-coat. So far I have only seen grey, and
only seen the 87 thrid brake light style.
On a Trans Am Flex Additive has to be used on: Nose peice, rear bumper,
Aero-Wing, factory ground effects. If your car was not painted with these
heat cycling will cause paint to crack.
What you really should do is go to a good body shop and have them remove
the paint from the wing and inspect it. If the ruberized surface is split,
you need a replacement.
Something else being an erly 87, you car had the water basised paint
system used at the Van Nuys (LA) plant. So if your wing was painted at the
factor, and was not striped before repainting, the factory paint under the
newer paint is probably cracking.
Thanks Charles. According to the VIN, this was assembled in Norwood
which supposedly had excellent paint results. Can't say for sure if
the spoiler was painted there or not but that is the only part that
has had consistent problems (been painted twice already by 2 different
locations). Probably will try once more before buying the other one.
It's been about 11 years since the last paint job (cracked after 5)
The Norwood plant still produced '87 F cars, by 1988 to they were all Van Nuys
Joe--ASE Certified Parts Specialist & 10th Ann.Club Tech Director
'80 Carousel Red Turbo T/A, 26k orig.
'79 "Y89" 400/4 speed 10th Ann. T/A, 57k orig
'84 Olds 88 Royale Bgm 2 dr, 307 "Rocket" (lol), 141k and still going....
'80 T/A project car...
Thanks for the Correction Joe. For some reason my brain though late 85
or 86 was when they closed F-body production down. On first thru erly thrid
gen cars around here I always check the Vin or trim tag for a 'N' or 'NOR'.
Since the plant was less then 55 miles away.
I remember some nut a few years ago on here posting about 67-69 Firebird
being build at Lordstown (where some J-cars are made). I have never seen
I do see a good number of Van Nuys/LA first gens out here.
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