RH passenger side 64-67 #9000488 horn different on an air conditioned car?

[Bill C.]

Hoping to get some input here, over time I have observed quite a few 64-67 rh #9000488 horns used on a/c cars to have a shorter mounting bracket. It's shorter by 1/2".

The part number, trumpet orientation, terminal, etc are exactly the same otherwise as a regular one. There is no way the longer bracket could have just been cut shorter as it would not work do to the mounting hole location.

I was told at one time by one of the best horn rebuilders that this was the case. A shorter bracket was used for clearance issues.

That said, how was this possible when the part number for both 488 horn versions is the same? I see nothing in any of the aim's or any where else unless I missed it. No mention in any JM's

Can anyone shed any light on this?

Anyone have the ability to check the horns in their own cars if they are known originals?

Thanks!
Bill Caldwell #15218

[Keith B.]

Re: RH passenger side 64-67 #9000488 horn different on an air conditioned car?

I asked this same question a while back. and AC cars used the same horns and brackets.

[Bill C.]

Re: RH passenger side 64-67 #9000488 horn different on an air conditioned car?

Keith,

Thanks for responding.I did see that post, its clear by the AIM it was the same as John stated, but it does not answer why I have found exactly that, a shorter bracket on the rh horn in some a/c cars. These were not restored cars, but originals.

So I am still wondering what it is I am finding?

Bill

[Wayne M.]

Re: RH passenger side 64-67 #9000488 horn different on an air conditioned car?

Bill -- was surprised about 5 yrs ago to find that my horns [and the shocks !] on '65 VIN 014xx (C60 K66 L76 and N03, w/original rad support) were the originals. [487_4G3 and 488_4H4].

There's a thumbnail I just took, below the big pic. Left and right seem to have the same length bracket, and are both located by that raised ridge on the support.

[Scott S.]

Re: RH passenger side 64-67 #9000488 horn different on an air conditioned car?

Hoping to get some input here, over time I have observed quite a few 64-67 rh #9000488 horns used on a/c cars to have a shorter mounting bracket. It's shorter by 1/2".

The part number, trumpet orientation, terminal, etc are exactly the same otherwise as a regular one. There is no way the longer bracket could have just been cut shorter as it would not work do to the mounting hole location.

I was told at one time by one of the best horn rebuilders that this was the case. A shorter bracket was used for clearance issues.

That said, how was this possible when the part number for both 488 horn versions is the same? I see nothing in any of the aim's or any where else unless I missed it. No mention in any JM's

Can anyone shed any light on this?

Anyone have the ability to check the horns in their own cars if they are known originals?

Thanks!
Bill Caldwell #15218

Bill,

The RH horn on 1966-67 Corvettes with C60 mounts to a bracket (flat piece of steel) that is riveted to the front of the RH inner fender well (67 AIM, UPC C60, B1) which is different from Wayne's '65. I checked the C60 section of the AIMs, and the drawings look the same for 1963-1965, then changed and appear to be the same for 1966-1967.

[Bill C.]

Re: RH passenger side 64-67 #9000488 horn different on an air conditioned car?

My thanks to all who responded and for taking the time to post pics, some not here. I am grateful for the help!

I have posted some pics here of just a couple of the shorter examples of the 488 horns on my shelf. I have others, so with these examples in hand, and they appear to be unrestored, and not restamped at any point, should I think they are something "made up" ? There is only about 5/8" difference between them so cutting the bracket shorter and relocating the mounting hole was not possible. These two shorter ones have dates for model years 66 and 67, I have never seen a shorter one for earlier years. Wondering if there was a change tried in later years? I never paid attention the its matching LH unit in car, maybe it also was shorter? Is it possible that both were made shorter at some point?