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Old Mar 24, 2008 | 07:38 PM
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Default 69 Seat Backs

Maybe this should be int he "Tech" section, but......Can anyone tell me what is the correct material used on 69 seat backs? Were they a kinda heavier black fiberglass or where they a lighter plastic? Thanks, john
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Old Mar 24, 2008 | 08:26 PM
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The originals that were on mine looked to be heavier, possibly fiberglass.

The aftermarket replacements I got were a lighter weight ABS plastic.

I hope that helps!


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Old Mar 24, 2008 | 09:13 PM
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yes it does, thank you. take care, john
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Old Mar 24, 2008 | 09:31 PM
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anybody to second this opinion? I have 2 nice ones that are a heavier black fiberglass material, just want to make sure they are the right ones for a 69, thanks, john
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Old Mar 24, 2008 | 10:09 PM
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Fairly sure the originals are fiberglass. Replacements are definately plastic (aftermarket pieces.)
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Old Mar 24, 2008 | 10:18 PM
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Thanks!
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Old Mar 25, 2008 | 12:00 PM
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Originally Posted by avalonjohn
anybody to second this opinion? I have 2 nice ones that are a heavier black fiberglass material, just want to make sure they are the right ones for a 69, thanks, john
John,

I'm not quite sure the originals were fiberglass, based on the way they degrade with sharp-edged cracks, maybe ABS? They are definitely heavier than the repops with a dark color (charcoal).

Steve
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Old Mar 25, 2008 | 01:34 PM
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Originals should be fiberglass. ZIP is advertising they have fiberglass seat backs, $55 each, in the current Corvette Fever issue. As far as I've seen most vendors sell plastic ones.
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Old Mar 25, 2008 | 02:24 PM
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The originals off the 68 were a fiberglass type material. The replacements that went on are ABS plastic.
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Old Mar 25, 2008 | 03:14 PM
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Looks like fiberglass wins?
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Old Mar 25, 2008 | 05:30 PM
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The 68-69 NCRS Tech Information Manual calls them 'plastic'. So ????
Regards,
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Old Mar 25, 2008 | 05:48 PM
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ok, now I'm confused..really...............anybody with an original car that can verify? The set I recently bought are a heavy fiberglass, very dense stuff, but the cracked up one on my 69 looks like plastic?
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Old Mar 25, 2008 | 06:59 PM
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I don't know if I'm helping or adding to the confusion ... I have an original 70, and the seat back is a glossy black, has a fiber texture, but resembles ABS. On the rounded edges where the screw holes are located, I can see short fiber strands, and just above center is the raised number 3974092. So what is it really?
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Old Mar 25, 2008 | 09:21 PM
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Originally Posted by 70Yellowbird
I don't know if I'm helping or adding to the confusion ... I have an original 70, and the seat back is a glossy black, has a fiber texture, but resembles ABS. On the rounded edges where the screw holes are located, I can see short fiber strands, and just above center is the raised number 3974092. So what is it really?
is it heavy like glass or light plastic?
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Old Mar 26, 2008 | 12:43 AM
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Originally Posted by avalonjohn
is it heavy like glass or light plastic?
It's heavy ... about 1/8" thick.
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Old Mar 26, 2008 | 08:22 AM
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Originally Posted by Alan 71
The 68-69 NCRS Tech Information Manual calls them 'plastic'. So ????
Regards,
Alan
Technically, fiberglass is plastic, sometimes called FRP, fiber reinforced plastic.

The seat backs do appear to contain fibers and look a lot like fiberglass from the body of the car...but as they degrade they develop sharp cracks all the way through, unlike fiberglass.

Steve
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