Author Topic: rear antenna (Read 16402 times)

67conv6cyl · « **on:** January 10, 2017, 03:48:32 AM »

Is there a difference in the front antenna mast from the rear antenna mast. dose any body have an original picture?

67jeffreyt · « **Reply #1 on:** January 10, 2017, 12:21:45 PM »

Front is a fixed mast, the rear is extendable and from what I have read, fixed mast was am/FM and the extendable was am only. But I'm not the official word on this.

bertfam · « **Reply #2 on:** January 10, 2017, 02:33:57 PM »

The AM mast is the same (P/N 3876412) for front and rear, but the bezel and a few other parts are different. Check your 1967 AIM for more info.

Ed

67conv6cyl · « **Reply #3 on:** January 10, 2017, 03:15:33 PM »

Thanks for the picture, however the antenna base in the picture looks different from what I thought it was supposed to look like, is a 68 different from a 67

bertfam · « **Reply #4 on:** January 10, 2017, 03:29:22 PM »

Quote

is a 68 different from a 67

No, both years used the same parts.

Ed

cook_dw · « **Reply #5 on:** January 10, 2017, 03:48:25 PM »

Ed do you have a better pic? Maybe its my eyes but it doesnt look correct..

bertfam · « **Reply #6 on:** January 10, 2017, 04:09:14 PM »

No, I don't have many cars with U73, but maybe these two will help. Notice how they appear to be slightly different and it may be because antennas had multiple suppliers.

Ed

HawkX66 · « **Reply #7 on:** January 10, 2017, 04:10:25 PM »

Quote from: cook_dw on January 10, 2017, 03:48:25 PM

Ed do you have a better pic? Maybe its my eyes but it doesnt look correct..

Is the OE Darrell? I see it has the spoiler.

cook_dw · « **Reply #8 on:** January 10, 2017, 04:15:35 PM »

Yes spoiler was added.. And Ed that last pic you just posted has the antenna in the wrong location.

This one appears to be correct and almost looks like the mast is bent..?. Interesting..

Mike S · « **Reply #9 on:** January 10, 2017, 05:12:21 PM »

I have the rear antenna (AM) on my 67 convertible. It stands with a very slight pitch backwards when viewed from the side and the mast is supposed to have about a 6 degree tilt when facing the rear of it and looking forward. Let me take a picture of it.

Mike

bertfam · « **Reply #10 on:** January 10, 2017, 05:34:35 PM »

Quote

And Ed that last pic you just posted has the antenna in the wrong location.

Actually Darrell, if you look at the AIM (see attached), that's the only car in this thread with the antenna in the semi-correct location!!! The fore/aft hole should be approx even with the trunk gutter lip and it appears that all the other cars have it placed too far rearward.

Ed

cook_dw · « **Reply #11 on:** January 10, 2017, 05:37:20 PM »

Less than a month old.. Hard to see but the antenna is straight up.

bertfam · « **Reply #12 on:** January 10, 2017, 05:37:58 PM »

Here's another picture of the blue car. And like the others (except for the black car), it's too far rearward. At least in comparison with the AIM. And according to the AIM, "The antenna should lean inboard approx. 4 degrees (Ref.) when viewed from front of car & stand vertically when viewed from side of car".

Darrell, do you have another picture showing where the antenna is mounted on your car in reference to the mounting location in the AIM?

Ed

cook_dw · « **Reply #13 on:** January 10, 2017, 05:46:23 PM »

Ill have to look Ed but I wanna say there is a reinforcement plate in the corner or something where they are showing in the AIM to put the hole.. Ill look next time I am in the trunk of the green car..

cook_dw · « **Reply #14 on:** January 10, 2017, 05:49:45 PM »

Best I have at this point Ed.. Pic was from the early 90's.. Also Ed; you and I both know that there are errors in the AIM..

Edit: here is a pic from inside the trunk.

HawkX66 · « **Reply #15 on:** January 10, 2017, 05:54:28 PM »

Quote from: cook_dw on January 10, 2017, 05:37:20 PM

Less than a month old.. Hard to see but the antenna is straight up.

I kind of figured... I didn't realize your Dad added the spoiler. Mine too...

bertfam · « **Reply #16 on:** January 10, 2017, 05:58:24 PM »

Quote

Also Ed; you and I both know that there are errors in the AIM..

Agreed. Either the AIM is wrong (which wouldn't surprise me) or all these cars are wrong (which WOULD surprise me)!!

I just checked my car and I have no reinforcement plate, but then again, I don't have U73 either so that might make a difference. But the AIM doesn't show any kind of plate installed other than the ground tab.

Ed

cook_dw · « **Reply #17 on:** January 10, 2017, 06:07:55 PM »

I may be

but I could have sworn I saw one in my red LOS 68.. Im am getting

so memory could be failing.. Ill look tonight hopefully if not then it might be this weekend..

67conv6cyl · « **Reply #18 on:** January 10, 2017, 07:36:04 PM »

How tall is the antenna when it pulled out all the way? Is it the same antenna that is use for all of the 67 Chevrolet car line. I just bought a Nos rear mount one and just want to make sure it is correct.

Mike S · « **Reply #19 on:** January 10, 2017, 07:44:13 PM »

Quote from: 67conv6cyl on January 10, 2017, 07:36:04 PM

How tall is the antenna when it pulled out all the way? Is it the same antenna that is use for all of the 67 Chevrolet car line. I just bought a Nos rear mount one and just want to make sure it is correct.

Both my '67 AM antenna's measured out to 47" total length and 46" from tip to the start of the bottom threads. Attached are some images of the shape.

Mike

bertfam · « **Reply #20 on:** January 10, 2017, 07:50:05 PM »

Quote

I just bought a Nos rear mount one and just want to make sure it is correct.

If it's NOS there will be a part number for the kit. What's that number?

Ed

Mike S · « **Reply #21 on:** January 10, 2017, 07:51:18 PM »

My '67's antenna location is like Darrells '68. I looked at my 67 convertible rear antenna hole and even though the quarter was replaced in the 80's the hole cutout was based on the original location. I measured approximately 15 1/4" from the hole center to the edge of the quarter. From the center of the hole to the front side of the gutter area almost 6". Could the hole have been moved up in later model years if the car was ordered with the spoiler?
Attached are some pictures taken to show the pitch (looks almost straight up) and the inboard lean (hard to see in the picture) and also the original base mount to show the rise.

Mike

PS. that black circle mark by the base is my reminder to wetsand a minor spec out of the clear coat

cook_dw · « **Reply #22 on:** January 10, 2017, 08:22:39 PM »

Great pics Mike.. And no rear antenna on spoiler cars. It automatically put it on the fender.

68L30 · « **Reply #23 on:** January 10, 2017, 09:35:12 PM »

You can't get too close to the "gutter" or you'll get into the plate under the quarter panel. It's just past that plate far enough to fit the ground plate under the antenna as well. The green 68 looks correct to me. That is where mine is as well.

Steve

Mike S · « **Reply #24 on:** January 10, 2017, 09:38:45 PM »

Darrell,

Just curious the distance is between the antenna base center and the edge of the rear quarter on the Green Machine.

Mike

cook_dw · « **Reply #25 on:** January 10, 2017, 10:15:54 PM »

Ill look at it next time Im near it.

ko-lek-tor · « **Reply #26 on:** January 10, 2017, 10:25:23 PM »

Although a 69, this car is a factory rear antenna car.

67conv6cyl · « **Reply #27 on:** January 10, 2017, 10:40:33 PM »

The part number is 986872 the antenna looks correct, all the hardware looks correct however there are some extra parts in the kit that are for other 67 Chevrolet (fullsize car line applications) my car has the factory hole drilled for the rear antenna and its in the same spot as the green 68.

Paul

bertfam · « **Reply #28 on:** January 10, 2017, 10:58:12 PM »

Yes, the 986872 is for 1967 full size cars (15000 and 16000 series except station wagons), but I would imagine most of the parts will interchange.

Ed

bcmiller · « **Reply #29 on:** January 11, 2017, 09:07:16 PM »

I can't take a look at this for details right now, car is tucked away for the winter.

Also can't guarantee it is original. Could be it was added based on the AIM drawing.

I will try to check closer in a month or so.

ko-lek-tor · « **Reply #30 on:** January 11, 2017, 11:21:41 PM »

Quote from: bcmiller on January 11, 2017, 09:07:16 PM

I can't take a look at this for details right now, car is tucked away for the winter.

Also can't guarantee it is original. Could be it was added based on the AIM drawing.

I will try to check closer in a month or so.

I have been curious for some time wondering just how many "original" accessories & RPOs on our cars were, in fact, dealer/owner installed? It would not be an easy install if a car already had a radio and front antenna, but I am sure a few dealers figured a way to install some of the stuff cheaper than the factory like not ordering a radio and adding at the dealer.

bertfam · « **Reply #31 on:** January 11, 2017, 11:46:56 PM »

Quote

I have been curious for some time wondering just how many "original" accessories & RPOs on our cars were, in fact, dealer/owner installed? It would not be an easy install if a car already had a radio and front antenna, but I am sure a few dealers figured a way to install some of the stuff cheaper than the factory like not ordering a radio and adding at the dealer.

Dealers did this a lot. It was more profitable for them to buy and install the radio on their own than to have the factory install one. Things like Radios, A/C, mud flaps, undercoating, etc... these were all high profit items for the dealer.

Here's a typical Motorola AM radio that would have been dealer installed.

Ed

BillG · « **Reply #32 on:** January 12, 2017, 02:07:55 AM »

And if the dealer did this, the car should have the solid grommet in the door jamb.

69Z28-RS · « **Reply #33 on:** January 12, 2017, 02:55:38 AM »

Many of the manufacturers at the time had an option which included 'speakers' and power wiring (and maybe antenna?) but without the radio, since it was faddish at the time to buy a new car and install an aftermarket 8-track or stereo... Not sure if Chevy did in 1969?

bertfam · « **Reply #34 on:** January 12, 2017, 02:43:53 PM »

Quote

Not sure if Chevy did in 1969?

Not as much as the prior years. The zone offices finally started catching on to what dealers were doing and put the kibosh on it!

Ed

L78 steve · « **Reply #35 on:** January 13, 2017, 06:44:46 PM »

This is as mine. The AIM is not how the factory did it. The hole would be in the corner brace if done according to the illustration.

bertfam · « **Reply #36 on:** January 13, 2017, 08:08:27 PM »

Let's just go back in time!

From May 16th, 1968 - BEWITCHED - SPLITSVILLE (Season 4, Episode 33)

That's CERTAINLY not where the AIM shows it to be!!

Ed

Steve Shauger · « **Reply #37 on:** January 13, 2017, 08:13:30 PM »

My silver unrestored 69 Z28 was ordered without a radio and the dealer installed the Motorola. Looks almost identical from the knobs to the rear brace.

cook_dw · « **Reply #38 on:** January 14, 2017, 08:29:14 PM »

Green car photos. Measurement from the trunk seal is 6.5" roughly, from the edge of the outer side of the quarter is 1 5/8" roughly and 2" roughly from the trunk side edge.

Mike S · « **Reply #39 on:** January 15, 2017, 05:58:02 AM »

Darrell's are what my measurements look like. For the almost 6 1/2" it is from the hole C/L to the edge of the rubber channel closest to the font of the car. Just for the heck of it I measured the hole location and it is approximate to the posted P.V. measurements in the '67 AIM.

Mike

BillG · « **Reply #40 on:** January 15, 2017, 10:07:03 PM »

Another question is, did the quarter panels come from the suppliers with the rear holes already punched and then the factory closed the hole if it did'nt get the rear option? My friend's D80 car did not get the rear antenna option of course, but running my finger under the bottom of the quarter inside the trunk, I can feel where the punched hole was.

ko-lek-tor · « **Reply #41 on:** January 15, 2017, 11:31:20 PM »

Quote from: BillG on January 15, 2017, 10:07:03 PM

Another question is, did the quarter panels come from the suppliers with the rear holes already punched and then the factory closed the hole if it did'nt get the rear option? My friend's D80 car did not get the rear antenna option of course, but running my finger under the bottom of the quarter inside the trunk, I can feel where the punched hole was.

No

Camarocards · « **Reply #42 on:** January 17, 2017, 12:58:22 AM »

FWIW.....Here are a couple of rear antenna pics I took today at the BJ auction to show the location.

First two pics are from a '68Z out of the Reggie Jackson collection. Next two are from a '67 that was the 13th Camaro built.

Gars68Tux · « **Reply #43 on:** January 17, 2017, 08:37:06 AM »

Quote from: bertfam on January 10, 2017, 05:34:35 PM

Quote
And Ed that last pic you just posted has the antenna in the wrong location.

Actually Darrell, if you look at the AIM (see attached), that's the only car in this thread with the antenna in the semi-correct location!!! The fore/aft hole should be approx even with the trunk gutter lip and it appears that all the other cars have it placed too far rearward.

Ed

Yeah, the pics (drawings) in the AIM are deceiving, but I bet if you had a way of measuring from the firewall, it would be 114.25 " back to the antenna.

Section 11-13 shows the reference points where measurements are taken.

Mike S · « **Reply #44 on:** January 18, 2017, 03:15:32 PM »

Quote

Yeah, the pics (drawings) in the AIM are deceiving, but I bet if you had a way of measuring from the firewall, it would be 114.25 " back to the antenna. Section 11-13 shows the reference points where measurements are taken.

There are two ways to measure from the firewall (Zero starting point for the PV).
1- No windshield - Use a piece of thin wood (a yard stick is good) held flat against the firewall and with someone holding the end of the ruler, pull it across the dash to the stated PV area to get the back depth. Then perpendicular that to get the location on the quarter.
2- With a windshield installed - use a wood or plastic yard stick placed flat against the firewall and stick out the side (about 45 degrees) of the hood hinge area and measure from that point to the PV target area.
The short PV from the center of the car is basically 1/2 the distance between the two quarter gully centers.
That's how I verified my mounts location recently. Back in the day I just used the measurement from the back of the quarter edge of the original that was removed.

Mike

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Author Topic: rear antenna (Read 16402 times)