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Author Topic: 69 horn bolts  (Read 6266 times)

john302

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69 horn bolts
« on: February 16, 2020, 07:32:52 PM »
When did they stop using the silver plated clawed washer horn attaching bolts?And started using the non clawed black plated bolts?thanks 
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firstgenaddict

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Re: 69 horn bolts
« Reply #1 on: February 17, 2020, 01:47:21 PM »
As far as I know there is NOT a running change for the horn bolt in the assem manual.
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James
Collectin' Camaro's since "Only Rednecks drove them"
Current caretaker of 1971 LT1's - 11130 and 21783 Check out the Black 69 RS/Z28 45k mile Survivor and the Lemans Blue 69 Z 10D frame off...
https://plus.google.com/photos/112392262205377424364/albums?banner=pwa

Edgemontvillage

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Re: 69 horn bolts
« Reply #2 on: February 25, 2020, 11:02:04 PM »
I’ve seen original horn mounting bolts mostly in manganese phosphate however some in clear (silver) zinc, what’s the determining factor which finish was used?
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m22mike

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Re: 69 horn bolts
« Reply #3 on: February 26, 2020, 02:09:39 AM »
They were removed by a revision to the A.I.M dated 10/68.
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X66 L78 M22 4.10 Deluxe Threads, PNT 10/10, Red Hockey stripe

Edgemontvillage

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Re: 69 horn bolts
« Reply #4 on: February 26, 2020, 05:31:12 AM »
Quote from: m22mike on February 26, 2020, 02:09:39 AM
They were removed by a revision to the A.I.M dated 10/68.

What was removed 10/68?
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m22mike

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Re: 69 horn bolts
« Reply #5 on: February 26, 2020, 12:39:31 PM »
Quote from: m22mike on February 26, 2020, 02:09:39 AM
They were removed by a revision to the A.I.M dated 10/68.

I should have added that the zinc plated bolts were changed to the same phos bolts that holds the lower hood latch. The numbers are there, and somewhat hard to read in the revision box, depending on your copy of the AIM. Later I will look up a page # for you.
Mike
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68camaroz28

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Re: 69 horn bolts
« Reply #6 on: February 29, 2020, 12:43:06 AM »
Hi Mike, our original 68 had zinc plated bolts but seems like most 69’s have the phosphate but have noted both.
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Chick
68 Z/28 NOR 01B Orig motor/trans/rear
69 Z/28 NOR 07A Orig Block & GM Cross-ram/carbs
69 L34 Rest. Nova Father/Son Car
69 L78 Surv Nova Purch 4/69 31K miles
67 L89 Corv Tribute
68 Corv 427/400 Orig motor
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R 68Z build- http://www.camaros.net/forums/showthread.php?t=182584

m22mike

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Re: 69 horn bolts
« Reply #7 on: February 29, 2020, 06:23:50 PM »
Yes Chick. I have seen a few very early built 69's with bright plated bolts. There was most likely a transition period until old stock was used up.
 Not a Camaro, but on Grady's Nov 68 built 69 Nova, it had a bright plated horn bolt. I believe a hardware Change like this and others was across the whole GM line ? Not just Camaro JMO.

Mike
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firstgenaddict

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Re: 69 horn bolts
« Reply #8 on: February 29, 2020, 09:43:43 PM »
Here is a VERY EARLY original paint 09B LA car which has one of each...
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James
Collectin' Camaro's since "Only Rednecks drove them"
Current caretaker of 1971 LT1's - 11130 and 21783 Check out the Black 69 RS/Z28 45k mile Survivor and the Lemans Blue 69 Z 10D frame off...
https://plus.google.com/photos/112392262205377424364/albums?banner=pwa

hornworks

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Re: 69 horn bolts
« Reply #9 on: May 14, 2020, 10:31:06 PM »
I was told by an old Delco engineer that electrical parts were designated to be attached with silver or cad plated bolts for ground purposes.
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hornworks

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Re: 69 horn bolts
« Reply #10 on: May 27, 2020, 11:01:57 PM »
Just noticed the horns in the picture have been off,they are switch. the wrong sides. Should face forward
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william

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Re: 69 horn bolts
« Reply #11 on: May 28, 2020, 04:31:57 PM »
Quote from: hornworks on May 27, 2020, 11:01:57 PM
Just noticed the horns in the picture have been off,they are switch. the wrong sides. Should face forward

Depends on build date. That is the positioning per the AIM. A friends' 10B Norwood Z/28 has them in the AIM position. Definitely switched in production shortly afterwards at both plants; AIM never updated.
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hornworks

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Re: 69 horn bolts
« Reply #12 on: May 30, 2020, 01:50:04 AM »
Never noticed that William. You are correct.
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