84' Cutlass pro touring build

Northernregal

Sloppy McRodbender
Oct 24, 2017
3,359
12,828
113
Red Deer, Northern Montana territory
And what I don't understand is there was no lead in the seam. Just pink body filler. And the vinyl was as cracked as badly as I've ever seen. Strange days indeed...
My Regal was all filler. Not pink though, it was orange or beige? Been a few years....
 
  • Like
Reactions: 1 user

Rktpwrd

Builder of Cool Shjt
Supporting Member
Feb 2, 2015
4,170
23,918
113
Calgary, Alberta, Canada
And what I don't understand is there was no lead in the seam. Just pink body filler. And the vinyl was as cracked as badly as I've ever seen. Strange days indeed...

My Regal was all filler. Not pink though, it was orange or beige? Been a few years....

That’s not/wasn’t/isn’t body filler, it’s a form of seam sealer that GM was using at the time. Body filler is porous and will absorb water. You think vinyl top rot is bad now? Imagine if they had’ve actually used body filler.
Also, you guys may have noticed that it came out kinda crumbly when you were grinding it out, that’s a dead giveaway.
Body filler would’ve come out as dust.
 
  • Like
  • Informative
Reactions: 4 users

Tony1968

Royal Smart Person
Supporting Member
Jul 1, 2018
2,324
5,132
113
NW Indiana
That’s not/wasn’t/isn’t body filler, it’s a form of seam sealer that GM was using at the time. Body filler is porous and will absorb water. You think vinyl top rot is bad now? Imagine if they had’ve actually used body filler.
Also, you guys may have noticed that it came out kinda crumbly when you were grinding it out, that’s a dead giveaway.
Body filler would’ve come out as dust.
Makes sense. I was warned by a few guys here to beware of the lead so that's what I was expecting. I guess they rolled the dice on assembly lines back then.
Would you reinforce the tack welds at seam somehow or just send it?
 
  • Like
Reactions: 1 user

scoti

Royal Smart Person
Sep 5, 2019
1,979
3,404
113
Texas
I thought the lead ended mid 70's? I would of expected these Metric chassis cars to have a sealer vs lead since they started after '78.
 
  • Like
Reactions: 1 user

Rktpwrd

Builder of Cool Shjt
Supporting Member
Feb 2, 2015
4,170
23,918
113
Calgary, Alberta, Canada
Makes sense. I was warned by a few guys here to beware of the lead so that's what I was expecting. I guess they rolled the dice on assembly lines back then.
Would you reinforce the tack welds at seam somehow or just send it?

Up to you in the sail panel area Tony. If your running a fairly powerful mill and plan on actually getting traction (ie slicks or sticky road race tires), I would consider reinforcing the area somehow. These cars are known for being weak in this area and flexing with power. The Juggernaut has twist wrinkles in the sail panels from that big 455 of mine hooking up at the track.

Have a look through Olds Cools’ thread when I was working on that area to see how I did mine. I welded and shaped the critical corners and edges, then filled the rest with short strand fibreglass “kitty hair” filler.

I thought the lead ended mid 70's? I would of expected these Metric chassis cars to have a sealer vs lead since they started after '78.

GM still used lead in certain areas on our cars, depending on if it was going to be visible or not. The sail panel areas were a “roll of the dice” type thing. If it was going to be a vinyl roof car rolling down the assembly line, they slapped in seam sealer and sent it because it was quicker and cheaper than leading and finishing out the area perfectly. (Hidden underneath the vinyl). But if it was going to be a non-vinyl hardtop car, then they had to do it properly.

You’ll still find lead in areas like the “A” pillar to roof transition areas in all our cars because these areas were never hidden under the vinyl tops.
 
  • Like
Reactions: 3 users

motorheadmike

Geezer
Nov 18, 2009
8,976
27,522
113
Saskatchewan, Truckistan
Up to you in the sail panel area Tony. If your running a fairly powerful mill and plan on actually getting traction (ie slicks or sticky road race tires), I would consider reinforcing the area somehow. These cars are known for being weak in this area and flexing with power. The Juggernaut has twist wrinkles in the sail panels from that big 455 of mine hooking up at the track.

Have a look through Olds Cools’ thread when I was working on that area to see how I did mine. I welded and shaped the critical corners and edges, then filled the rest with short strand fibreglass “kitty hair” filler.



GM still used lead in certain areas on our cars, depending on if it was going to be visible or not. The sail panel areas were a “roll of the dice” type thing. If it was going to be a vinyl roof car rolling down the assembly line, they slapped in seam sealer and sent it because it was quicker and cheaper than leading and finishing out the area perfectly. (Hidden underneath the vinyl). But if it was going to be a non-vinyl hardtop car, then they had to do it properly.

You’ll still find lead in areas like the “A” pillar to roof transition areas in all our cars because these areas were never hidden under the vinyl tops.

Yup, seam sealer on my Monte's donor body along the sail panel pinch weld. I welded it up and added a filler piece because of the potential for damage from...

 
  • Like
Reactions: 2 users

pagrunt

Geezer
Sep 14, 2014
9,169
15,354
113
Elderton, Pa
GM still used lead in certain areas on our cars, depending on if it was going to be visible or not. The sail panel areas were a “roll of the dice” type thing. If it was going to be a vinyl roof car rolling down the assembly line, they slapped in seam sealer and sent it because it was quicker and cheaper than leading and finishing out the area perfectly. (Hidden underneath the vinyl). But if it was going to be a non-vinyl hardtop car, then they had to do it properly.
This must of been a GM pratice from as early as the late '60's. My '72 Monte had the pink stuff instead of lead under the vinyl top
 
  • Like
Reactions: 2 users

melloelky

Comic Book Super Hero
Oct 22, 2017
4,162
9,569
113
mass
Makes sense. I was warned by a few guys here to beware of the lead so that's what I was expecting. I guess they rolled the dice on assembly lines back then.
Would you reinforce the tack welds at seam somehow or just send it?
Tony if you have the means to do some welding it won't hurt but if you don't it's not the end of the world either.you've upgraded to a stiffer suspension/add on chassis items and aftermarket body mounts,all these measures will firm the ride substantially over stock.by the time you're done it'll flex less than before.
 
  • Like
Reactions: 3 users

Tony1968

Royal Smart Person
Supporting Member
Jul 1, 2018
2,324
5,132
113
NW Indiana
Tony if you have the means to do some welding it won't hurt but if you don't it's not the end of the world either.you've upgraded to a stiffer suspension/add on chassis items and aftermarket body mounts,all these measures will firm the ride substantially over stock.by the time you're done it'll flex less than before.
I agree and I'll blow the dust off the welder and tack on some pieces. Just because I don't want to take the chance that she'll crack in the future. I saw how MotorheadMike did his and will find D's thread for more information
 
  • Like
Reactions: 2 users

GBodyForum is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com. Amazon, the Amazon logo, AmazonSupply, and the AmazonSupply logo are trademarks of Amazon.com, Inc. or its affiliates.

Please support GBodyForum Sponsors

Classic Truck Consoles Dixie Restoration Depot UMI Performance

Contact [email protected] for info on becoming a sponsor