Guess what this hole was for - The 1947 - Present Chevrolet & GMC Truck Message Board Network

69GMCCustom · 03-11-2018, 01:42 AM

Been lurking for years, started a truck 69 gmc longbed and had to sell it, and finally got a new one 70 c10.
I keep wanting to start a build log, just haven't gotten around to it. I will.
As many of you have seen numerous "modifications" over the years, I wanted to ask your help.
Can anyone identify what this hole was created for? That's between the driver's side door and the instrument cluster.

Richard2112 · 03-11-2018, 01:55 AM

I have a similar hole or holes in the same location on my 70 c30. Maybe it was a trend back then to lock a chimpanzee in the cab with a cordless drill.

69GMCCustom · 03-11-2018, 02:08 AM

I agree. This one had been dropped, without changing the original ball joints or shocks. Lol. It does seem to be a 2 owner vehicle tho.

stsalvage · 03-11-2018, 02:12 AM

could it had been for a spot light.If you have a bigger pic pf where it is it would help

69GMCCustom · 03-11-2018, 02:35 AM

Here is a larger area of the hole.
The corresponding hole on the outside cowl. Note the amazing handiwork.
And the strange grommet I found on the roof, filled with Bondo as well. I assume this corresponds to the cb radio mount holes under the lip of the dash.

Richard2112 · 03-11-2018, 02:43 AM

My C30 had emergency lights mounted on the roof at one time so the were several roof holes also.

69GMCCustom · 03-11-2018, 02:50 AM

This one only has one grommet, center of the roof. But it came power steering, brakes, tinted windows, a/c , heavy duty suspension, so a spotlight wouldn't surprise me.

**clay68c10** · 03-11-2018, 10:44 AM

That dash to pillar hole was definitely a spot light.
Maybe the roof was also. Mine had a roof mounted spot when I bought it back in 89. Get that hole sealed up or you will end up needing a new roof/cab. Ask me how I know...

69GMCCustom · 03-11-2018, 11:17 AM

Clay68c10- Never seen a roof mounted spotlight. But, I wish they were both still there, guess it's just two more things to keep a look out for at the junkyard.

weq92f · 03-11-2018, 12:50 PM

Maybe it was some type of rescue or emergency truck in the past?

-klb

69GMCCustom · 03-11-2018, 01:44 PM

@ klb. Who knows?
There is an inner hole to match the roof hole as well. Time to collect pictures, and start searching for parts. If I can find em, I'll put them back on.
Thanks for your help!

BugzC10 · 03-11-2018, 02:03 PM

Quote:

Originally Posted by stsalvage

could it had been for a spot light.If you have a bigger pic pf where it is it would help

That is my first guess also....

weq92f · 03-11-2018, 03:20 PM

Quote:

Originally Posted by 69GMCCustom

@ klb. Who knows?
There is an inner hole to match the roof hole as well. Time to collect pictures, and start searching for parts. If I can find em, I'll put them back on.
Thanks for your help!

Whatever was mounted north of the original rear view mirror mount was probably the "controller" for whatever was mounted in the center of the roof panel. I'm guessing it was a strobe of some sort or other type of light bar. Check around the edges of the roof inside the door jambs for some mounting holes or marks where something may have been wedged there or for mounting holes.

It could also have been an antenna maybe, although that seems like an extreme measure to cut a hole for an antenna!

-klb

69GMCCustom · 03-11-2018, 05:16 PM

There are no real marks on the door jamb, but I would think a roof rack type accessory would not need a hole drilled as well. But your right, that would be overkill for an antenna. It seems no one takes pictures of the interior roof of the cab.

Quote:

Originally Posted by weq92f

Whatever was mounted north of the original rear view mirror mount was probably the "controller" for whatever was mounted in the center of the roof panel. I'm guessing it was a strobe of some sort or other type of light bar. Check around the edges of the roof inside the door jambs for some mounting holes or marks where something may have been wedged there or for mounting holes.

It could also have been an antenna maybe, although that seems like an extreme measure to cut a hole for an antenna!

-klb

weq92f · 03-11-2018, 06:17 PM

It could have also been a siren or megaphone.

Checkout this thread of ambulances:

http://67-72chevytrucks.com/vboard/s...d.php?t=403359

-klb

weq92f · 03-11-2018, 06:45 PM

Couple more threads with some interesting bits of info:

http://67-72chevytrucks.com/vboard/s...=siren+install

http://67-72chevytrucks.com/vboard/s...=siren+install

http://67-72chevytrucks.com/vboard/s...ghlight=rescue

-klb

03-11-2018, 01:42 AM	#1
69GMCCustom Registered User Join Date: Sep 2011 Location: Fresno, CA Posts: 80	Guess what this hole was for Been lurking for years, started a truck 69 gmc longbed and had to sell it, and finally got a new one 70 c10. I keep wanting to start a build log, just haven't gotten around to it. I will. As many of you have seen numerous "modifications" over the years, I wanted to ask your help. Can anyone identify what this hole was created for? That's between the driver's side door and the instrument cluster. Attached Images __________________ "I'm rooting for you, and remember, were all in this together." ~ RED GREEN 1970 Chevy Custom.

03-11-2018, 01:55 AM	#2
Richard2112 Registered User Join Date: Jul 2014 Location: South East Ohio Posts: 644	Re: Guess what this hole was for I have a similar hole or holes in the same location on my 70 c30. Maybe it was a trend back then to lock a chimpanzee in the cab with a cordless drill.

03-11-2018, 02:08 AM	#3
69GMCCustom Registered User Join Date: Sep 2011 Location: Fresno, CA Posts: 80	Re: Guess what this hole was for I agree. This one had been dropped, without changing the original ball joints or shocks. Lol. It does seem to be a 2 owner vehicle tho. __________________ "I'm rooting for you, and remember, were all in this together." ~ RED GREEN 1970 Chevy Custom.

03-11-2018, 02:12 AM	#4
stsalvage Scrapper 1 Join Date: Jan 2007 Location: Riverside Calif Posts: 1,649	Re: Guess what this hole was for could it had been for a spot light.If you have a bigger pic pf where it is it would help

03-11-2018, 02:35 AM	#5
69GMCCustom Registered User Join Date: Sep 2011 Location: Fresno, CA Posts: 80	Re: Guess what this hole was for Here is a larger area of the hole. The corresponding hole on the outside cowl. Note the amazing handiwork. And the strange grommet I found on the roof, filled with Bondo as well. I assume this corresponds to the cb radio mount holes under the lip of the dash. Attached Images __________________ "I'm rooting for you, and remember, were all in this together." ~ RED GREEN 1970 Chevy Custom.

03-11-2018, 02:43 AM	#6
Richard2112 Registered User Join Date: Jul 2014 Location: South East Ohio Posts: 644	Re: Guess what this hole was for My C30 had emergency lights mounted on the roof at one time so the were several roof holes also.

03-11-2018, 02:50 AM	#7
69GMCCustom Registered User Join Date: Sep 2011 Location: Fresno, CA Posts: 80	Re: Guess what this hole was for This one only has one grommet, center of the roof. But it came power steering, brakes, tinted windows, a/c , heavy duty suspension, so a spotlight wouldn't surprise me. __________________ "I'm rooting for you, and remember, were all in this together." ~ RED GREEN 1970 Chevy Custom.

03-11-2018, 10:44 AM	#8
clay68c10 Senior Member Join Date: Aug 2004 Location: Centennial, CO Posts: 2,988	Re: Guess what this hole was for That dash to pillar hole was definitely a spot light. Maybe the roof was also. Mine had a roof mounted spot when I bought it back in 89. Get that hole sealed up or you will end up needing a new roof/cab. Ask me how I know... __________________ ClusterTruck: 68 C10 Bought in 89, wrecked in 03. Slow low $ rebuild started '17. 6.0 & TKO http://67-72chevytrucks.com/vboard/s...d.php?t=788602 93 K1500 Short Step, 350, NV4500, EBL flash ECU. Vortec heads & roller cam someday... 05 Jeep Wrangler Unlimited. 3” lift & 6-speed 02 E320 the insurance total “free car” 13 Tahoe LTZ

03-11-2018, 11:17 AM	#9
69GMCCustom Registered User Join Date: Sep 2011 Location: Fresno, CA Posts: 80	Re: Guess what this hole was for Clay68c10- Never seen a roof mounted spotlight. But, I wish they were both still there, guess it's just two more things to keep a look out for at the junkyard. __________________ "I'm rooting for you, and remember, were all in this together." ~ RED GREEN 1970 Chevy Custom.

03-11-2018, 12:50 PM	#10
weq92f Registered User Join Date: Oct 2016 Location: Dallas Texas Posts: 3,218	Re: Guess what this hole was for Maybe it was some type of rescue or emergency truck in the past? -klb __________________ 67 C10 fleet fuel injected '70 402, 700r4, 3.73 posi 07 335 sport turbo 6sp 94 Trans Am GT LT1 6sp posi -- sold after 22yrs 99 540 sport V8 6sp -- sold 73 240z L24 4sp -- given to friend 68 C10 step 350/350 3.73 open -- sold

03-11-2018, 01:44 PM	#11
69GMCCustom Registered User Join Date: Sep 2011 Location: Fresno, CA Posts: 80	Re: Guess what this hole was for @ klb. Who knows? There is an inner hole to match the roof hole as well. Time to collect pictures, and start searching for parts. If I can find em, I'll put them back on. Thanks for your help! Attached Images __________________ "I'm rooting for you, and remember, were all in this together." ~ RED GREEN 1970 Chevy Custom.

03-11-2018, 06:17 PM	#15
weq92f Registered User Join Date: Oct 2016 Location: Dallas Texas Posts: 3,218	Re: Guess what this hole was for It could have also been a siren or megaphone. Checkout this thread of ambulances: http://67-72chevytrucks.com/vboard/s...d.php?t=403359 -klb __________________ 67 C10 fleet fuel injected '70 402, 700r4, 3.73 posi 07 335 sport turbo 6sp 94 Trans Am GT LT1 6sp posi -- sold after 22yrs 99 540 sport V8 6sp -- sold 73 240z L24 4sp -- given to friend 68 C10 step 350/350 3.73 open -- sold

03-11-2018, 06:45 PM	#16
weq92f Registered User Join Date: Oct 2016 Location: Dallas Texas Posts: 3,218	Re: Guess what this hole was for Couple more threads with some interesting bits of info: http://67-72chevytrucks.com/vboard/s...=siren+install http://67-72chevytrucks.com/vboard/s...=siren+install http://67-72chevytrucks.com/vboard/s...ghlight=rescue -klb __________________ 67 C10 fleet fuel injected '70 402, 700r4, 3.73 posi 07 335 sport turbo 6sp 94 Trans Am GT LT1 6sp posi -- sold after 22yrs 99 540 sport V8 6sp -- sold 73 240z L24 4sp -- given to friend 68 C10 step 350/350 3.73 open -- sold



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