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#41
02-06-2019, 08:54 PM
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Both zinc and cadmium plating are silverish in color. The color comes from a chromate that is is applied after the zinc or Cadnium. Most yellow plated stuff prior to 1973-74 is Cadmium. The EPA came down on Cad plating and GM switched to Zinc. So if it’s yellow or silver it could be either one
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#42
02-06-2019, 08:57 PM
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Thanks Norwood! Maybe I will scrounge up a load to go to my local plater and add this part.
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...Steve T. "Resurrection of a 1970 Trans Am" Blog www.455hota.wordpress.com ------------------------------------- 1966 GTO 4 speed Hardtop Alabama car (Marina Turquoise w turquoise interior) 1970 TA 4 speed Canadian car (Lucerne Blue w bright blue interior) |
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#43
02-07-2019, 12:05 AM
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Pics are interesting. Even the OTC units were always silverish or zinc. This unit was same as the Venturas, Nova, Apollo , and many more probably. Maybe there was more than one supplier for the original assembly, which makes sense. We see this in Bolts on the same car.
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#44
02-07-2019, 08:20 AM
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This is one the one I Had..nos lense and replated in gold.
Has gasket and ground too.  I felt it was correct for 69-73.
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Mike/Illinois |
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#45
02-07-2019, 07:01 PM
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Quote:
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1970 Trans Am 1971 Trans Am 1974 Trans Am 1978 Y88 Trans Am W72/auto 1979 10th Anniversary Trans Am 1984 Trans Am 1993 Trans Am 1999 30th Anniversary Trans Am 2001 10th anniversary Firehawk #104 2006 GTO |
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#46
02-08-2019, 09:09 AM
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Makes sense, it is part of the assembly and the rest added later.
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