I have a 84 Trans Am that we are starting on restoring. The ground effects on the front have some damage to one corner so I wanted to look up getting it replaced. I went to New GM parts and looked up the diagram for the front GFX. It is show the front air deflector as one piece and each side in front of the tire as one piece the a flat piece that makes up the tunnel under the car. When I get under it and look I swear it is all one piece on my car. Am I wrong and just not able to figure out where it separates? Did they make any with the front end in front of the tires all one piece? Any pictures you guys might have would be a big help. Also any informaiton on where would be the best place to get the needed pieces.

Thanks,

Bob

 

You're right, & you're not crazy, You have an 84 Trans Am "Aero"
the front lwr deflector is all one-piece. Your dealer is looking up for 1985 and up which switched to a 2-piece frt gfx, with the frt lwr deflector built in to the bumper cover.

The 85 ground effects are taller and fatter looking and are the precursor to the GTA years.

This is actually an anniversary year, check your vin to see if yours is an anniversary car.
As a side note, How bad is the hole in the cover??

The new generation of two-part structural adhesives are great products, and far less expensive than a new part. (If you don't have a giant gaping hole...)

 

Yes, you have the optional W62 "Aero Package". More commonly known as "Ground effects" (GFX). The 84 T/A GFX were unique to 1984 (and 2500 1983 Daytona 500 Pace car replica T/A's).

Your Vin # will not tell you if your car is an anniversary model. FOr that you need to contact Pontiac Historic Services www.phs-online.com.

All the 1984 15th Anniversary models were white with blue pinstriping and decals, and a special Recaro interior. They also had the L69 (305 HO).

 

Kevin G, can you private message me and give me some more info on these adhesives? I'm looking for something to repair/bond urethane. Any links or brand names would be very appreciated

 

GRRRRRRR.
had a whole page o' s**t that I typed and lost it...

Basically, You need to know what type of material you're repairing.
We use 3M Automix exclusively, never weld anymore, If you're using the new stuff the quality of the repair is unsurpassed. I takes all the guesswork outta the equation. (Kinda expensive though, and you gotta buy the gun if your not getting any quantity of the repair material.)
There are a couple of repair tricks if you're repairing a large hole or tear in the substrate. I can pm you if you need some help along the way.

 

I would be interested in how I can repair it. It has a pice that has been broken out of it about the size of a silver dollar. I have the piece that goes in it. there are a few cracks going out from the break. Not having much luck finding a good used one so repair may be my only option.

Thanks,

 

O man. Piece o' cake.!!!


Especially if you have the original piece...
Here we go...
Strip all the old paint from the area to be repaired.(you want a clean raw surface to work on.)
Prep the area with soapy water and rinse.
Grind the whole area LIGHTLY, creating a little valley sloping off to the hole(inside and out)
Grind the surface of the piece to be replaced
Wash again
Drill holes about an eighth to a quarter inch outside of the hole, spaced about a quarter of an inch apart. (all the way around the perimeter)
Repeat the drilling on the piece that was knocked out.
Clean and inspect the area again
Mix the repair material only enough to do the job
Insert the broken out piece into it's original hole
Spread liberally on the inside and out. Push the repair material into the holes (They will act as fingers... holding the pieces together)
Work quickly but don't rush, the suff will start to set up fairly quickly (especially if it's hot out)
cover the whole area on the exterior with a little extra. (so you can sand it down level.
Wait to harden (the longer the better), if you get in a hurry it will peel.
Grind down flat or block sand w/80 grit
Inspect the repair (see if it needs another coat)
If there is a little indentation, you can use a skim coat repair (sold in the same line)

good luck,
let us know how it goes

 

Thanks for the informaiton. It will be a while before I get to it since I am pulling the motor this weekend to start the rebuild. I really appreciate the help and can't wait to try it out.

Thanks again,

Bob

 

when I got my 84 Trans Am it had all the ground effects except the one that goes around the front bumper cover and both fenders, I ordered a new one from Classic Industries but it is pretty spendy, $418.00 shipped! I think it is urethane so it is very flexible and I have had it on the car for 7 years now and it looks just as good as the day I got it. it came in one big huge box and was shipped via 18 wheeler lol. this part does not go on the car by adheisive(spelling?), it bolts on or at least the one I got does.

 

Yes it has a series of strips with studs in it to fasten it to the cover and fenders.
What I am discussing is to repair a plastic or urethane part if it is damaged

 

Bob, did you finish the resto on the 84 T/A? my 84 is almost done except for paint and the front end red/cond/tranny cooler.