78 Grand Prix interior screws

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carbolicsoap

Not-quite-so-new-guy
Feb 21, 2023
7
3
3
Just picked up a 78 GP LJ that has been slumbering in a barn for 25+ years. The previous owner "helpfully" took all the interior apart. Would appreciate some help with correct screw sizes / dimensions And any diagrams to put it all back together. The Chiltern manual I have doesn't go that in depth.

Apologies if this has been asked before. I checked screw on a search and came up with nothing.
 

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mikester

Comic Book Super Hero
Mar 10, 2010
2,964
3,852
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Small town NY
Just picked up a 78 GP LJ that has been slumbering in a barn for 25+ years. The previous owner "helpfully" took all the interior apart. Would appreciate some help with correct screw sizes / dimensions And any diagrams to put it all back together. The Chiltern manual I have doesn't go that in depth.

Apologies if this has been asked before. I checked screw on a search and came up with nothing.
This place has a good selection of interior hardware. https://www.gmclassicparts.com/GRAND-PRIX_c_110857.html Mikes Montes would be another source. I found the majority of SS philips oval head screws from the local hardware store worked just fine but I dont remember the lengths. Its been a while. Im thinking 5/8 or 3/4 long.
 
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88AZSS

Master Mechanic
Mar 13, 2018
439
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Mesa, AZ
Yeah Mikes Montes and I believe OPGI have complete sets of interior hardware.
 
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Steve 82 Elly

Greasemonkey
Feb 2, 2020
105
111
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Just picked up a 78 GP LJ that has been slumbering in a barn for 25+ years. The previous owner "helpfully" took all the interior apart. Would appreciate some help with correct screw sizes / dimensions And any diagrams to put it all back together. The Chiltern manual I have doesn't go that in depth.

Apologies if this has been asked before. I checked screw on a search and came up with nothing.
Check out Dixie restoration depot, I just ordered and received an entire interior faster kit from them for my El Camino. It might not be a complete set for a GP but for 40 bucks its a good start. Good luck
 
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doood

Amateur Mechanic
Sep 24, 2020
629
880
93
Fantastic find!!! Love the rear lights on those... what state you in?
 
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carbolicsoap

Not-quite-so-new-guy
Feb 21, 2023
7
3
3
Thanks for all your messages, I will look up all of the leads, thank you. Really appreciate all the friendly help. I'll post pics once she is up and running.

I'm in Hocking Hills, Ohio.
 
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