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  #21  
Old 06-11-2021, 05:44 PM
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Phosphate
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  #22  
Old 06-11-2021, 05:57 PM
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05A 12k miles car....Joe
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1968 Z/28 Corvette Bronze. Black Hounds Tooth. 02E Los Angeles born 3/13/1968 pnt OO
1969 SS396 Yellow/Yellow 08E Norwood born 8/28/1969 pnt 76E
1970 'cuda Moulin Rouge, 440-6, 4 speed
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  #23  
Old 06-11-2021, 08:47 PM
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Thanks for posting Joe, to clarify, shown in the photo are the standard, short style bumperettes vs the optional, long style.
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Old 06-11-2021, 08:48 PM
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Short. You're welcome....Joe
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1968 Z/28 Corvette Bronze. Black Hounds Tooth. 02E Los Angeles born 3/13/1968 pnt OO
1969 SS396 Yellow/Yellow 08E Norwood born 8/28/1969 pnt 76E
1970 'cuda Moulin Rouge, 440-6, 4 speed
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Old 06-16-2021, 03:31 PM
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The lower bumper guard Bolts, I have seen two Styles. Some cars have a recessed head with a captured lock washer. But more cars than not have the captured flat washer. The application for the bumper guard should be zinc chromate. However this is the same exact bolt that attaches the starter brace to the block. And those were black phosphate. So it's possible that they got switched up at the factory on occasion or if they ran out they snag some from that bin
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Old 06-21-2021, 09:29 PM
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Quote:
Originally Posted by Enoch View Post
The lower bumper guard Bolts, I have seen two Styles. Some cars have a recessed head with a captured lock washer. But more cars than not have the captured flat washer. The application for the bumper guard should be zinc chromate. However this is the same exact bolt that attaches the starter brace to the block. And those were black phosphate. So it's possible that they got switched up at the factory on occasion or if they ran out they snag some from that bin
Thanks Rich. I also reached out to "JM" for his input on the question and he responded: "Silver Zinc, indented hex head with a floating washer. Standard and full rear guards used the same bolts"
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Old 06-21-2021, 09:44 PM
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I just got other pictures from another known original 69 z/28. Phosphate, exactly like to 12k original car....Joe
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1968 Z/28 Corvette Bronze. Black Hounds Tooth. 02E Los Angeles born 3/13/1968 pnt OO
1969 SS396 Yellow/Yellow 08E Norwood born 8/28/1969 pnt 76E
1970 'cuda Moulin Rouge, 440-6, 4 speed
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  #28  
Old 06-23-2021, 03:20 PM
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Here's a sampling of headmarkings for this application.
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