67 CST Review Mirror Question - Page 2 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

72c20customcamper · 03-02-2025, 02:52 PM

Quote:

Originally Posted by 1970cstblazer

That is exactly what occurred for 1968. If you look at the 1968 data book, only the exterior fixed arm mirrors were standard equipment. The inside rearview mirror was optional. The RPO code was D36.

In 1969, the inside rearview mirror along with the LH&RH fixed arm mirrors were standard.

Wasn’t D36 option the non glare day/night rear view mirror? Not the standard mirror .

**1970cstblazer** · 03-02-2025, 03:17 PM

There is zero mention of the day/night feature in the data book dated 2/1/68. This is the nomenclature from that 1968 data book:

All it states for D36 is prismatic non-glare shatterproof.

**LockDoc** · 03-02-2025, 03:36 PM

Quote:

Originally Posted by 1970cstblazer

There is zero mention of the day/night feature in the data book dated 2/1/68. This is the nomenclature from that 1968 data book:

All it states for D36 is prismatic non-glare shatterproof.

A prismatic mirror is a day/night mirror. It has a prism in it which gives it the day/night feature.
.

72c20customcamper · 03-02-2025, 04:30 PM

Quote:

Originally Posted by LockDoc

A prismatic mirror is a day/night mirror. It has a prism in it which gives it the day/night feature.
.

I thought that also

**67 twins** · 03-03-2025, 02:35 AM

Quote:

Originally Posted by LockDoc

A prismatic mirror is a day/night mirror. It has a prism in it which gives it the day/night feature.
.

Not exactly. I wish I knew how to link to an article here but I don't.

When you flip the mirror to night you are seeing a reflection off the front of the glass instead of the silvered back. Just like you can see a reflection in a window pane.

**LockDoc** · 03-03-2025, 11:04 AM

Quote:

Originally Posted by 67 twins

Not exactly. I wish I knew how to link to an article here but I don't.

When you flip the mirror to night you are seeing a reflection off the front of the glass instead of the silvered back. Just like you can see a reflection in a window pane.

Yes, but the reason you are seeing that is because the glass is a prism. Take one apart. The glass is not flat, it is tapered top to bottom. Trust me, A day/night mirror is a prismatic mirror....
.

HO455 · 03-03-2025, 06:12 PM

So it appears from the information in this thread that the mirror in my 67 Burban isn't a factory mirror. Any idea what it's out of?

One possibility that hasn't been mentioned for trucks without a inside mirror is that it is possible that a truck could have been ordered with the mirror shipped for dealer installation. Maybe for owners who were planning on installing a camper. I've seen cases like that on other GM vehicles. If so that would only show up on the dealers paperwork not the SPID.

**1970cstblazer** · 03-03-2025, 06:29 PM

If the mirror has Guide stamped in the metal it is real. Sure looks legit.

**dagnabbitt** · 03-03-2025, 07:48 PM

Quote:

Originally Posted by 1970cstblazer

If the mirror has Guide stamped in the metal it is real. Sure looks legit.

This is a really interesting topic.

I can't recall ever seeing one of our trucks without a rearview mirror in it. Of course, mine are all from Oshawa. Perhaps the "Mandatory Canadian Equipment" on the SPID isn't just a block heater, after all..

72c20customcamper · 03-03-2025, 08:06 PM

Quote:

Originally Posted by dagnabbitt

This is a really interesting topic.

I can't recall ever seeing one of our trucks without a rearview mirror in it. Of course, mine are all from Oshawa. Perhaps the "Mandatory Canadian Equipment" on the SPID isn't just a block heater, after all..

Even states here have different rules . Back in the day Studebaker couldn’t ship Avanti’s into NY with factory stock glass pack mufflers and you couldn’t get sidepipes on Corvettes or the AMX because NY law didn’t allow glass packs or exhaust the exited before the rear wheels . Dealers used to install them after the car was sold . Both laws are still on the books here .

too much stuff · 03-04-2025, 10:41 AM

Quote:

Originally Posted by HO455

So it appears from the information in this thread that the mirror in my 67 Burban isn't a factory mirror. Any idea what it's out of?

One possibility that hasn't been mentioned for trucks without a inside mirror is that it is possible that a truck could have been ordered with the mirror shipped for dealer installation. Maybe for owners who were planning on installing a camper. I've seen cases like that on other GM vehicles. If so that would only show up on the dealers paperwork not the SPID.

I have seen that style quite often in 68 models.

**LockDoc** · 03-04-2025, 12:12 PM

Quote:

Originally Posted by HO455

So it appears from the information in this thread that the mirror in my 67 Burban isn't a factory mirror. Any idea what it's out of?

One possibility that hasn't been mentioned for trucks without a inside mirror is that it is possible that a truck could have been ordered with the mirror shipped for dealer installation. Maybe for owners who were planning on installing a camper. I've seen cases like that on other GM vehicles. If so that would only show up on the dealers paperwork not the SPID.

Those are a carryover from the earlier trucks. (before '67, and at least back to '64)

https://67-72chevytrucks.com/vboard/...ar+view+mirror

My unmolested '68 CST/Custom Camper truck had one like that.
.

TonyM · 03-04-2025, 04:45 PM

I have the exact same one in my 67 GMC CST

**mojavetrucker** · 03-21-2025, 08:33 PM

Long time lurker...now a new member with a 67 K10 CST. My truck is missing the mirror, but there is an outline of a mirror having been mounted and the triangle hole pattern is on 2" centers. The outline and the holes both match the 3768785/988173 mirror that was used on 60-66 trucks. There's even some residual black on the outline and I believe these mirror brackets also came in black.

Whether or not it was factory or dealer installed...or black, I guess I'll never know.

There is no mention of a mirror on my SPID.

After spending too much time on GMPartsWiki it appears that mirror bracket 988173 was removed in 10/67. The screws (part #565842) for the 3768785/988173 bracket were used from 60-67.

Has anyone here ever seen a black one mounted in a truck?

Thanks!

**1970cstblazer** · 03-21-2025, 10:18 PM

I have seen the black brackets in 1967's.

Mickeymotormount · 03-22-2025, 08:17 AM

Quote:

Originally Posted by 67 twins

A dump truck would have left the factory as a cab & chassis therfore no inside mirror. My comments are only in regards to pickup trucks.

My 67 C20 left the factory as a cab and chassis. No rear view mirror or passenger side visor. Only dimples in the roof where they would have drilled a hole to mount them.

This seems to corroborate what 67 TWINS was saying.

03-02-2025, 03:17 PM	#27
1970cstblazer All stock and staying that way Join Date: Jul 2003 Location: Elkland, PA Posts: 2,501	Re: 67 CST Review Mirror Question There is zero mention of the day/night feature in the data book dated 2/1/68. This is the nomenclature from that 1968 data book: All it states for D36 is prismatic non-glare shatterproof. Attached Images __________________ 1970 K/5 Blazer CST 4WD, TOTM winner December 2024! Medium Bronze poly, 93k ACT. miles, 350, 4 speed, rear positraction, 16.5" x 8.25" HD Kelsey Hayes wheel option, tilt, tach, vacuum, AM/FM, manual throttle...Dad ordered and purchased new 4/70. Frame off restored 1970 K20, To be a clone of my Grandfather's K20, Dark Blue poly, 350, 4 speed, 16.5" X 8.25" Kelsey Hayes wheel option, tilt, tach, vacuum, AM radio. Latest project truck 1972 Cheyenne Super 20 2WD, Dark Blue/White, 90K ACT. miles, 402, TH400, 4.10 open, tilt, tach, vacuum, A/C, AM/FM, manual throttle.. A mostly original paint never rusted Texas survivor... 2017 Sierra 1500 SLT 4WD, Black, 51k miles, 5.3, 6L80E, 3.42 LS, 20" polished wheels, everything but moonroof and 6.2... 2019 Canyon SLT 4WD, White, 71k miles, 3.6, 8L45, 3.23 LS, 18" wheels

03-03-2025, 06:12 PM	#32
HO455 Registered User Join Date: Feb 2016 Location: Portland Oregon Posts: 12,407	Re: 67 CST Review Mirror Question So it appears from the information in this thread that the mirror in my 67 Burban isn't a factory mirror. Any idea what it's out of? One possibility that hasn't been mentioned for trucks without a inside mirror is that it is possible that a truck could have been ordered with the mirror shipped for dealer installation. Maybe for owners who were planning on installing a camper. I've seen cases like that on other GM vehicles. If so that would only show up on the dealers paperwork not the SPID. Attached Images __________________ Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. RIP Bob Parks. 1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377

03-03-2025, 06:29 PM	#33
1970cstblazer All stock and staying that way Join Date: Jul 2003 Location: Elkland, PA Posts: 2,501	Re: 67 CST Review Mirror Question If the mirror has Guide stamped in the metal it is real. Sure looks legit. __________________ 1970 K/5 Blazer CST 4WD, TOTM winner December 2024! Medium Bronze poly, 93k ACT. miles, 350, 4 speed, rear positraction, 16.5" x 8.25" HD Kelsey Hayes wheel option, tilt, tach, vacuum, AM/FM, manual throttle...Dad ordered and purchased new 4/70. Frame off restored 1970 K20, To be a clone of my Grandfather's K20, Dark Blue poly, 350, 4 speed, 16.5" X 8.25" Kelsey Hayes wheel option, tilt, tach, vacuum, AM radio. Latest project truck 1972 Cheyenne Super 20 2WD, Dark Blue/White, 90K ACT. miles, 402, TH400, 4.10 open, tilt, tach, vacuum, A/C, AM/FM, manual throttle.. A mostly original paint never rusted Texas survivor... 2017 Sierra 1500 SLT 4WD, Black, 51k miles, 5.3, 6L80E, 3.42 LS, 20" polished wheels, everything but moonroof and 6.2... 2019 Canyon SLT 4WD, White, 71k miles, 3.6, 8L45, 3.23 LS, 18" wheels

03-21-2025, 08:33 PM	#39
mojavetrucker Junior Member Join Date: Mar 2025 Location: Joshua Tree, CA Posts: 22	Re: 67 CST Review Mirror Question Long time lurker...now a new member with a 67 K10 CST. My truck is missing the mirror, but there is an outline of a mirror having been mounted and the triangle hole pattern is on 2" centers. The outline and the holes both match the 3768785/988173 mirror that was used on 60-66 trucks. There's even some residual black on the outline and I believe these mirror brackets also came in black. Whether or not it was factory or dealer installed...or black, I guess I'll never know. There is no mention of a mirror on my SPID. After spending too much time on GMPartsWiki it appears that mirror bracket 988173 was removed in 10/67. The screws (part #565842) for the 3768785/988173 bracket were used from 60-67. Has anyone here ever seen a black one mounted in a truck? Thanks! Attached Images

03-21-2025, 10:18 PM	#40
1970cstblazer All stock and staying that way Join Date: Jul 2003 Location: Elkland, PA Posts: 2,501	Re: 67 CST Review Mirror Question I have seen the black brackets in 1967's. __________________ 1970 K/5 Blazer CST 4WD, TOTM winner December 2024! Medium Bronze poly, 93k ACT. miles, 350, 4 speed, rear positraction, 16.5" x 8.25" HD Kelsey Hayes wheel option, tilt, tach, vacuum, AM/FM, manual throttle...Dad ordered and purchased new 4/70. Frame off restored 1970 K20, To be a clone of my Grandfather's K20, Dark Blue poly, 350, 4 speed, 16.5" X 8.25" Kelsey Hayes wheel option, tilt, tach, vacuum, AM radio. Latest project truck 1972 Cheyenne Super 20 2WD, Dark Blue/White, 90K ACT. miles, 402, TH400, 4.10 open, tilt, tach, vacuum, A/C, AM/FM, manual throttle.. A mostly original paint never rusted Texas survivor... 2017 Sierra 1500 SLT 4WD, Black, 51k miles, 5.3, 6L80E, 3.42 LS, 20" polished wheels, everything but moonroof and 6.2... 2019 Canyon SLT 4WD, White, 71k miles, 3.6, 8L45, 3.23 LS, 18" wheels

03-04-2025, 04:45 PM	#38
TonyM Registered User Join Date: Jan 2000 Location: British Columbia, Canada Posts: 214	I have the exact same one in my 67 GMC CST



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.