I had an inquiry about this issue and if anyone is interested, I have an unofficial survey that I conducted a number of years ago I would be happy to send it along. Contact me at fulassoc@comcast.net. I have the change over from glass to plastic occurring around February 1990. Could be wrong as I have been in the past, but it was the best I could do.
Glass vs Plastic Headlamps for C4
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Pat
Thanks. Your C4 "what happened when" efforts are appreciated.
Dave
BTW Do you have a relative living around KC Missouri? There was a guy parking cars inside at recent "Show Me" Regional that I would have sworn was you. When I called his "name" he just ignored me. Someone who actually knew this person told me his name. Anyway, if you're at an event and see yourself walk by, it's not an illusion!Judging Chairman Mid-Way USA (Kansas) Chapter- Top
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Pat,
FWIW, all ZR-1's are plastic. My '92 original plastic headlamps have tan back.
Gary
....NCRS Texas Chapter
https://www.ncrstexas.org/
https://www.facebook.com/profile.php?id=61565408483631- Top
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Chiming in as well. I have an early 1990 made in November of 1989 that has glass Guide Halogen lights. I believe the transition for plastic bulbs on L98 cars started end of production 1990 going into 1991 as 1991 cars has a mix of plastic and glass bulbs I believe. ZR-1 cars were all plastic.- Top
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Pat, I looked at the survey you did, nice job,I can see a lot of confusion for the judges, but I am not in tune with C4’s, I just happen to have bought one That I was was thinking about having judged. I just need a couple of the plastic ones for my 93.New England chapter member, 63 Convert. 327/340- Chapter/Regional/national Top Flight, 72 coupe- chapter and regional Top Flight.- Top
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