GRAND PRIX Vinyl top replacement

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catmarie81

Not-quite-so-new-guy
Jun 10, 2020
5
3
Hey everyone! I have a 78 grand prix that i have been working at. It has the padded vinyl top and it needs to be replaced because it has a bunch of cracks. I find all sorts of videos on replacing tops but none on the g bodies. I know theres a plastic frame in the back and i have no idea how to even begin this project. Any pointers or links to helpful videos would be so appreciated. So far everything on my car has been done by myself and my dad so if it seems feasible i would like to try this myself as well. Thanks! 😊 20200404_165808.jpg
 
pontiacgp

pontiacgp

blank
Mar 31, 2006
28,158
113
Kitchener, Ontario
Hey everyone! I have a 78 grand prix that i have been working at. It has the padded vinyl top and it needs to be replaced because it has a bunch of cracks. I find all sorts of videos on replacing tops but none on the g bodies. I know theres a plastic frame in the back and i have no idea how to even begin this project. Any pointers or links to helpful videos would be so appreciated. So far everything on my car has been done by myself and my dad so if it seems feasible i would like to try this myself as well. Thanks! 😊 20200404_165808.jpg

I fixed your typo... :)


"Hey everyone! I have a 78 grand prix that i have been working at. It has the padded vinyl top and it needs to be removed because it has a bunch of cracks"
 
blk7gxn

blk7gxn

G-Body Guru
Feb 7, 2019
931
93
I fixed your typo... :)


"Hey everyone! I have a 78 grand prix that i have been working at. It has the padded vinyl top and it needs to be removed because it has a bunch of cracks"

Actually, Ill fix BOTH of your Typos :rofl: ....."Hey everyone! I have a 78 grand prix that i have been working at. It has the padded vinyl top and it needs to be removed, and once I remove it, i will not be seen around on G body forum, i will be heading to therapy after the shock of whats under there!!
 
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catmarie81

Not-quite-so-new-guy
Jun 10, 2020
5
3
Actually, Ill fix BOTH of your Typos :rofl: ....."Hey everyone! I have a 78 grand prix that i have been working at. It has the padded vinyl top and it needs to be removed, and once I remove it, i will not be seen around on G body forum, i will be heading to therapy after the shock of whats under there!!
I grew up in northern new york where literally everything is rusty. Also spent much of my time in garages growing up. I can handle it. Lol
 
blk7gxn

blk7gxn

G-Body Guru
Feb 7, 2019
931
93
I grew up in northern new york where literally everything is rusty. Also spent much of my time in garages growing up. I can handle it. Lol
Gotta Love NY, salt central! I truly hope its clean under there for you, but if its already showing signs of cracking, the moisture alone with the combination of GM being cheap and lazy, not finishing off the underside of the roofs like they should have, chances are it'll be rust :/ Keep us posted!
 
  • Agree
Reactions: Rktpwrd
fleming442

fleming442

Rocket Powered Basset Hound
Dec 26, 2013
10,169
113
If you get the material, I can't see it being that bad. The key is getting the right glue. You want something that will hold up to the heat of the sun. We used to get Landau top cement from an interior shop when I was doing stereos. They had a huge pot that they sprayed from, and I would just get a Gatorade bottle full, then brush it on. The closest I've found is the FLAMMABLE, red label Weldwood by DAP. It works okay on retained joints (headliner welting), but I'd try to get the real deal for an exterior application.
 
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catmarie81

Not-quite-so-new-guy
Jun 10, 2020
5
3
If you get the material, I can't see it being that bad. The key is getting the right glue. You want something that will hold up to the heat of the sun. We used to get Landau top cement from an interior shop when I was doing stereos. They had a huge pot that they sprayed from, and I would just get a Gatorade bottle full, then brush it on. The closest I've found is the FLAMMABLE, red label Weldwood by DAP. It works okay on retained joints (headliner welting), but I'd try to get the real deal for an exterior application.
Thank you. I will definitely look into that!
 
C

catmarie81

Not-quite-so-new-guy
Jun 10, 2020
5
3
Ok Im back and as you can see the roof is in pretty perfect shape. Got the landau top all removed. I am now pretty sure i just want to do the vinyl delete. I have purchased the rear window chrome trim and after the paint job will put it on. But my question now is what do i do with the quarter glass? I can't seem to find any trim that will fit my 78 grand prix. Will the chrome trim actually fill in the whole gap on the windows? Thanks for any help.
 

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