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#1
04-03-2026, 08:27 PM
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Smog/AIR "tree" finish ??????
Cant ask Bill Hoedel ...not answering phone at 330-832-0871
What is correct (exact) finish on 1970 Smog "Trees" I often read about the Greenish Hue............ I've also read about Black Zinc..........but dont know what's correct ?? Black Zinc Without the Brightner or ???
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Chuck Sharin [email protected] Auburn,WA (30 miles South of Seattle) 70 Camaro R/S Z-28, L-78 69 Camaro COPO recreation Last edited by CamarosRus; 04-03-2026 at 08:31 PM. 
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#2
04-03-2026, 08:44 PM
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----Bill is a really old friend from back in my Medina Ohio days, and you have me worried. I'm going to reach out to a few of our mutual friends and see what I can find out!....Bill S
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#3
Today, 12:52 AM
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I sent the original smog tubes from my COPO to Mike Gibbons at Brake Boosters/Detail Plating. He plated them black zinc which produced the greenish color. They passed Legends judging without deduction.
Jim
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#4
Today, 03:49 AM
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JJR, Ive read about Black Zinc , so Im glad to read that's what you had done....
If you look at other Clear Zinc and Yellow Zinc on your Restoration the zinc plating has a brightner applied over the zinc.......... Hard to tell but I'm guessing your smog trees are not to shiny, so maybe no brightner ???? Can you find out ..........Thanks
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Chuck Sharin [email protected] Auburn,WA (30 miles South of Seattle) 70 Camaro R/S Z-28, L-78 69 Camaro COPO recreation
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#5
Today, 03:56 AM
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Black Zinc is what I had done with mine. Look like new. Trans dipstick tube is also the same...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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#6
Today, 08:49 AM
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What about GM service replacements
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#7
Today, 05:40 PM
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Apparently their is ACID Zinc Plating & ALKALINE Zinc Plating
They are quite different (GOOGLE) with different finish "looks" Anyone reading this have experience/knowledge on what kind of Zinc Plating looks correct for the smog "trees"
__________________
Chuck Sharin [email protected] Auburn,WA (30 miles South of Seattle) 70 Camaro R/S Z-28, L-78 69 Camaro COPO recreation
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