63-64 Horns
Has anyone else notice there appears to be an error on page 130 of the 63-64 Judging Guide? The guide calls out the left horn as part# 9000455 (low) and right horn as part# 9000456 (hi). The AIM however calls out the left horn as part# 9000456 (hi) and right horn as part# 9000455 (low). Also, it appears the two can't be interchanged and still installed with the opening down and facing inboard. Am I losing my mind or is my observation correct?
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Re: 63-64 Horns
Here is a 63 Pilot Car on the line. Check the horns!
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Re: 63-64 Horns
Interesting. According to the 63 Pilot photo it appears as if the 9000456 is mounted on the right side which agrees with the 63-64 NCRS Judging Manual but contradicts the AIM. Also, I noticed in the AIM the horn openings are pointing straight down. I have the 9000455 but need the 456 and the way the mtg bracket is attached to the 455 it is impossble to mount the horn with the opening straight down in y car because it interfers with the bumper mtg bracket. So for me to install the 455 on the right side I need to rotate the horn slightly inboard which causes the opening to face outboard. I'm not an expert on horns so I'm uncertain if the openings need to face each other to make a balanced and correct sound. The 63-64 Judging Guide calls out the same configuration for 64 but with different part numbers. So which is correct the Judging Guide or the AIM? I sent an email to NCRS this morning and Eric Mortimer responded and will pass it on. I'm sure it will be resolved.Comment
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Re: 63-64 Horns
Harry, I did blow up the picture before my last post and that is why I mentioned the pilot photo agrees with the judging guide. The 455 would be mtd on the left and the 456 would be mtd on the right and the openings would face inward. However, this still contradicts the AIM. Additionally, if the AIM calls out the part numbers correctly meaning the 455 on the right and the 456 on the left the drawing that is in both the AIM and judging manual is incorrect because they can't be mounted with the openings pointing downwards. In summary, if the judging guide is correct it matches the pilot photo but the drawing in the guide is incorrect because it shows the horns mtd with the openings pointed downwards which I think we agree they can't be mtd this way so the drawings in the guide and AIM are wrong. So is the pilot car photo and the guide correct and the horn openings point inboards or is the AIM correct but the horn openings should point outboard.Comment
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Re: 63-64 Horns
Kerry, the portion of the JG that speaks to the 63 horn position has them positioned different than the picture. The 64 portion of the JG has them positioned as in the picture.
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Re: 63-64 Horns
So do you think the 456 is on the right and the 455 is on the left meaning the JG is correct and the AIM is incorrect? I believe we agree the drawings are incorrect in both the AIM and JG for the 63. Do you happen to have a 456 laying around that might be lookling for a new home?
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Re: 63-64 Horns
Looking at the 64AIM (Sec12 sheet A6.00) it should be noted that both item # 1&2 have been crossed out by (I assume) NPC 287 + supp #1.
One can see that #1 was 9000487 L while #2 was 9000488 H. In general the odd numbered parts are found on the left while even numbers are on the right (I believe) Following that philosophy the 487L would be on the left the 488H would be on the right Placement in such a manor would result in the horns facing inward at a slight angle as shown in the 64AIM .
If these are reversed the horns face outward which doesn't make sense.
Now the 63 horns are #1 9000455L on right side and #2 on left 9000456H, not following GM numbers. If reversed do they still face directly downward?? Given the even-odd location of part numbers followed by GM, the drawings in the AIMs, and the NPC seen in the 64AIM bet the JG is correctComment
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Re: 63-64 Horns
Alan, If the 455 is mounted on the right and the 456 on the left the horn openings will face outboard. This is the setup called out in the 63 AIM. However, the 63-64 Judging Guide indicates the 455 on the left and the 456 on the right. When installed this way the horn openings point inward and down at a slight angle similar to the 64 which makes more sense. It is my opinion the drawing in the AIM which is the same as the one used in the 63-64 JG and indicates the horn openings pointing striaght down is incorrect. It doesn't matter if the 455 is left/right or if the 456 is left/right the horns will not install with the openings pointing straight down as they interfer with the bumper mtg. brackets. Taking all of this into consideration it is my opinion the drawing is incorrect or just not drawn exactly how the horns were to be installed and the JG pulled the drawing from the AIM. Now we are left with the AIM and JG part# discrepancy but the installation the AIM calls out makes no sense as it will point the horn openings outboard. I hope this helps clarify.Comment
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Re: 63-64 Horns
Kerry -
"However, the 63-64 Judging Guide indicates the 455 on the left and the 456 on the right."
And that follows GM part numbering convention, ie 5 on the left, 6 on the right.
Harry is more familiar with 63 since they are different from my 64. Being a 63 the horns could have changed multiple times, it's a hard car to get right.Comment
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Re: 63-64 Horns
Alan, Yes you are correct. The part# callout in the JG follows GM part numbering convention. However, a discrepancy still exists between the AIM and JG and I simply brought that to NCRS and members attention. In the next revision of the JG, NCRS may want to remove the drawing for the 63 horns and insert a footnote describing the descrepancy in the AIM. I came across this because I need a 456 3D2 horn and during my research I discovered the descrepancy. My 455 is installed on the left.Comment
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Re: 63-64 Horns
This is correct.
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Re: 63-64 Horns
Thank you for the pictures. They are correct. The only way to install the horns in this manner is to install the 455 on the left and the 456 on the right which is what the JG calls out and the AIM is wrong which is what I concluded. If the horns are reveresed, 455 on right and 456 on left as called out in the AIM the horn openings will not point towards one another they will point outboard or away from one another. I believe we have been saying the same thing but in different lingo. Once again I have only 1 original horn a 455 3D2 wich is correct for my car which was built May 6. I have this 455 installed on the left side and looks exactly like the picture and would support the JG callout.Comment
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Re: 63-64 Horns
Kerry, there are two pictures in the JG, one for a 63 and one for a 64. The one for the 63 is incorrect.
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Re: 63-64 Horns
The 63 picture in the JG is what I'm referring too because that is the only year for the 455 and 456 and it is the year of my car. The picture is incorrect but the 63 part# callout in the JG is correct. 455 on the left and 456 on the right. This is where the problem lies. The AIM calls out 455 on the right and 456 on the left. So the picture and the part# callout is incorrect in the AIM. Wow. That was a tough one. It is difficult at times trying to describe items in writing.Comment
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