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03-14-2023, 12:41 PM
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#1 |
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Registered User
Join Date: Dec 2011
Location: WA
Posts: 378
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Optional factory horn?
I'm not sure if I'm reading this correctly. Was there an optional horn available?
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03-14-2023, 01:11 PM
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#2 |
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Registered User
 
Join Date: Jun 2012
Location: Schoolcraft, Michigan
Posts: 928
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Re: Optional factory horn?
Not sure about 73 - 80's but 81 - 87's Scottsdales and Silverados got a high note and a low note horns. Custom Deluxes just got the low note horn.
__________________
1972 GMC Jimmy 4x4 LS Swap 1985 Chevy K20 1994 GMC Yukon 2021 GMC 2500HD Duramax AT4 My "It's a Jimmy Thing" Build http://67-72chevytrucks.com/vboard/s...d.php?t=583528 Budget Build 1985 K20 http://67-72chevytrucks.com/vboard/s...d.php?t=801565 |
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03-14-2023, 01:39 PM
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#3 |
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Registered User
Join Date: Dec 2011
Location: WA
Posts: 378
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Re: Optional factory horn?
Interesting. If I understand correctly the high note horn is more for animals and the low note horn is for humans. My 78 has two horns which I guess are both low note horns. I'm going to try and replace one of them with a high note horn.
https://www.usa1industries.com/1973-...c-truck-horns/ |
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03-14-2023, 02:25 PM
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#4 |
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Registered User
Join Date: Jun 2012
Location: Schoolcraft, Michigan
Posts: 928
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Re: Optional factory horn?
If they are the factory horns, i believe that they should be stamped on them "Lo" or "Hi".
__________________
1972 GMC Jimmy 4x4 LS Swap 1985 Chevy K20 1994 GMC Yukon 2021 GMC 2500HD Duramax AT4 My "It's a Jimmy Thing" Build http://67-72chevytrucks.com/vboard/s...d.php?t=583528 Budget Build 1985 K20 http://67-72chevytrucks.com/vboard/s...d.php?t=801565 |
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03-14-2023, 05:59 PM
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#5 |
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Registered User
Join Date: Aug 2012
Location: Oklahoma City, OK
Posts: 2,611
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Re: Optional factory horn?
Another advantage of 2 or more horns of difference frequencies is you will also get a 3rd 'warble' note that is the interference frequency of the 2 horns. Not sure of the proper musical term. This 3rd note will have peaks with higher sound levels then either of the two base notes.
IIRC - Cadillac had 3 horns selected to create a special 'Cadillac' sound. |
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03-15-2023, 10:34 PM
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#6 |
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Registered User
Join Date: Jan 2009
Location: Edgewood, WA
Posts: 108
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Re: Optional factory horn?
My 84 GMC had both the high and low pitch horns already. Even though both of them now sound perfect after I tweaked the tuning screws on them (to break the years of road grime loose), I still had to add my auxiliary Hutchins horn:
https://blogger.googleusercontent.co...Image00013.jpg
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