OEM Windsheild - The 1947 - Present Chevrolet & GMC Truck Message Board Network

mygmctruck1 · 02-18-2020, 04:19 PM

Is it worth getting an oem windsheild over a new replacement ?
Providing the oem unit is in good condition .

Or is the gasket the primary concern for a good fit ?

cebra · 02-18-2020, 05:40 PM

The repro gaskets are made for OEM windshields so they actually don't fit the new windshields well. Yes I would get it as they are thicker than new ones. I had to put a boatload of windshield sealer around my windshield to stop it from leaking (new Precision gasket and new windshield not OEM).

toolboxchev · 02-18-2020, 06:55 PM

X2 on the NOS windshields vs OEM Aftermarket. New windshields are thinner and need sealant in the glass to rubber side.

I could imagine a NOS piece of glass is pretty much a unicorn.

mygmctruck1 · 02-18-2020, 09:08 PM

Has anyone use Pilkington glass classic. Glass ?
Per their web site the classic glass is made to oem stds !

**special-K** · 02-19-2020, 07:06 AM

^^^ That is the best replacement to get.

cebra · 02-19-2020, 09:35 AM

If you do get a thin windshield (compared to OEM) do yourself a favor and shoot a ton of 3M windoweld in there til it rolls out all the way around and then trim the excess off. I tried to be "gentle" with caulking mine and ended up unnecessarily battling the leak for a couple months as I swore that much water could not still be getting in the windshield from a leaking seal. It was like someone turned on a garden hose in my truck when it rained.

**truckster** · 02-19-2020, 09:57 AM

Pilkington bought LOF, one of the two OEM suppliers. They have a division for classic glass. I haven't used them yet, but I understand you can even get the LOF and correct date stamp for restoration work.

mygmctruck1 · 02-19-2020, 03:38 PM

Quote:

Originally Posted by truckster

Pilkington bought LOF, one of the two OEM suppliers. They have a division for classic glass. I haven't used them yet, but I understand you can even get the LOF and correct date stamp for restoration work.

Well , I just talked these people , they said the classic glass is a hair thinner than the oem glass . He also said they have experienced no complaints.
According to them , oem glass was 1/4” thick . What is a hair thick in there mind ?

Glass price for a 70 c10 with 4” top tinted . $175. Shipping to me another $175.

**Grumpy old man** · 02-19-2020, 03:53 PM

Just call your local auto glass shops and get quotes from them on the glass you want . Don't pay to have glass shipped .

weq92f · 02-19-2020, 04:29 PM

.
FWIW

PGW was the glass I broke
XYG is what the local glass shop brought for replacement ( not yet installed )

Didn't measure thickness but will later when they come back to install after I get the right gasket.

EDIT: both are green tint blue sun strip, pretty sure the CCC in a circle means it's from China!

-klb

toolboxchev · 02-19-2020, 04:51 PM

Quote:

Originally Posted by mygmctruck1

Has anyone use Pilkington glass classic. Glass ?
Per their web site the classic glass is made to oem stds !

Yes, OEM standards, that is true. But I suspect it is thinner. GM never fully address the leaks issue with these model years.

I have one, just replaced late last summer. It still will require 3M Window Weld in both Glass to Rubber side, and Rubber to Metal side.

You will also need some CRL Problem Solver Nozzles most likely.

Check this catalogue from CR Lawrence Company

http://www.crlaurence.com/adv/catalo...dex.html?PN=18

Page 145

**truckster** · 02-19-2020, 04:51 PM

Not necessarily made in China, but the CCC mark is required for it to be sold in China. E1 means it's certified by Germany. The DOT mark is, of course, for the US. I'm not sure what the others are.

mygmctruck1 · 02-19-2020, 05:19 PM

Quote:

Originally Posted by toolboxchev

Yes, OEM standards, that is true. But I suspect it is thinner. GM never fully address the leaks issue with these model years.

I have one, just replaced late last summer. It still will require 3M Window Weld in both Glass to Rubber side, and Rubber to Metal side.

You will also need some CRL Problem Solver Nozzles most likely.

Check this catalogue from CR Lawrence Company

http://www.crlaurence.com/adv/catalo...dex.html?PN=18

Page 145

Well according to them , there glass is a hair thinner than the 1/4” the glass was back then. GM is not the only one’s with that leak problem , Ford dealt with it too. To what extent I don’t know .

mygmctruck1 · 02-19-2020, 05:22 PM

Quote:

Originally Posted by cebra

The repro gaskets are made for OEM windshields so they actually don't fit the new windshields well. Yes I would get it as they are thicker than new ones. I had to put a boatload of windshield sealer around my windshield to stop it from leaking (new Precision gasket and new windshield not OEM).

How do you know the gasket is made to oem spec’s , I haven’t seen anything yet that comes that close ?

toolboxchev · 02-20-2020, 12:34 AM

For what it is worth, Most folks on this website have all pretty much seen that new windshields are thinner than what came with the vehicle.

Precision is at the top of their class with these gaskets. So much so, that Steele Rubber products actually buys this particular gasket from Precision. I had that conversation directly with Steele Products via email.

The DOT spec I am under the impression will tell you the thickness if you can decode the spec.

mygmctruck1 · 02-20-2020, 08:31 AM

Quote:

Originally Posted by toolboxchev

For what it is worth, Most folks on this website have all pretty much seen that new windshields are thinner than what came with the vehicle.

Precision is at the top of their class with these gaskets. So much so, that Steele Rubber products actually buys this particular gasket from Precision. I had that conversation directly with Steele Products via email.

The DOT spec I am under the impression will tell you the thickness if you can decode the spec.

Ok , if that’s true and I have no reason to doubt you . Then if I can get a good oem windshield and use there gasket , I would be ahead of the leaking curve ?
So then my new question is , if the oem windshield needs polishing ? How well does that work ? Providing there surface scratches .

Found one the other day , not yet looked at it in person , so I am in hopes of getting this done soon.

sick472 · 02-20-2020, 10:30 AM

I have dabbled in glass scratch removal without much success. I concluded it best left for one with good experience in performing the task. This will likely cost more than new glass. The problem comes from using the proper glass specific polish (don't believe the web when it says toothpaste works) and a high speed buffing tool (to keep you from rubbing your arms off for the rest of your life). Where it gets sketchy is that heat will be built up during the process and to much heat in an area causes the glass to crack and you can't buff that out. I found that very, very light scratches that wold be seen as a haze could be improved, but the actual linear scratches that you commonly see where someone ran wipers without rubbers or hit the glass with a wire wheel are not coming out without leaving a wrinkle in the glass due to having to buff so deep to remove the scratch. This would be unacceptable for me considering how much time it would take to remove the scratch, the wrinkle itself, and the risk of wasting that time due to cracking the glass.

EDIT: Be aware that original or very old glass may have had the lamination separated around the edges. This is not too big of a deal until it draws moisture and the outer perimeter of the glass fogs up. I bought a used windshield many years ago that had, what appeared to be, nice antiquing along the bottom and sides that I thought I would use in my truck...after many years in storage the "antiquing" disappeared (or dried up). I have decided not to use it for fear that it would fog back up irregularly.

I will be looking for the pilkington glass, precision seal, along with plenty of windshield sealer.

**71CHEVYSHORTBED402** · 02-20-2020, 11:36 AM

The guy installing my glass is vintage and best in the business. He says point blank OER are thinner. If I remember right he uses various vendors, even for the same part.

weq92f · 02-21-2020, 11:48 AM

.
This is the XYG glass...

-klb

mygmctruck1 · 02-21-2020, 12:46 PM

Quote:

Originally Posted by weq92f

.
This is the XYG glass...

-klb

Thats a lot when it comes to a tight fitting seal .

Daaaanz67 · 02-21-2020, 01:33 PM

I’ve read other threads and pilkington/precision was the answer to this issue. Anyways following this as this has always been a debating issue and maybe something new has come up.

Astro-Balls · 02-21-2020, 01:44 PM

What is the thickness of Pilkington glass?

Andy4639 · 02-21-2020, 01:50 PM

Even the manual says it needs sealer.

Astro-Balls · 02-21-2020, 01:55 PM

I still have the original windshield and gasket that came out of my '68, they used a heck of a lot more sealant that just the top corners.

weq92f · 02-21-2020, 01:57 PM

Quote:

Originally Posted by Andy4639

Even the manual says it needs sealer.

How would this be done? Lift the rubber and squirt it in from the outside?

-klb

02-18-2020, 04:19 PM	#1
mygmctruck1 Registered User Join Date: Jun 2018 Location: Munising,Mi Posts: 360	OEM Windsheild Is it worth getting an oem windsheild over a new replacement ? Providing the oem unit is in good condition . Or is the gasket the primary concern for a good fit ?

02-18-2020, 05:40 PM	#2
cebra Registered User Join Date: Jan 2018 Location: Durham, North Carolina Posts: 782	Re: OEM Windsheild The repro gaskets are made for OEM windshields so they actually don't fit the new windshields well. Yes I would get it as they are thicker than new ones. I had to put a boatload of windshield sealer around my windshield to stop it from leaking (new Precision gasket and new windshield not OEM). __________________ My Daily Driver Build: http://67-72chevytrucks.com/vboard/s...d.php?t=755668

02-18-2020, 06:55 PM	#3
toolboxchev Registered User Join Date: Jul 2015 Location: 2nd left past the stump on a dirt road. Posts: 2,629	Re: OEM Windsheild X2 on the NOS windshields vs OEM Aftermarket. New windshields are thinner and need sealant in the glass to rubber side. I could imagine a NOS piece of glass is pretty much a unicorn.

02-18-2020, 09:08 PM	#4
mygmctruck1 Registered User Join Date: Jun 2018 Location: Munising,Mi Posts: 360	Re: OEM Windsheild Has anyone use Pilkington glass classic. Glass ? Per their web site the classic glass is made to oem stds !

02-19-2020, 07:06 AM	#5
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,863	Re: OEM Windsheild ^^^ That is the best replacement to get. __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~

02-19-2020, 09:35 AM	#6
cebra Registered User Join Date: Jan 2018 Location: Durham, North Carolina Posts: 782	Re: OEM Windsheild If you do get a thin windshield (compared to OEM) do yourself a favor and shoot a ton of 3M windoweld in there til it rolls out all the way around and then trim the excess off. I tried to be "gentle" with caulking mine and ended up unnecessarily battling the leak for a couple months as I swore that much water could not still be getting in the windshield from a leaking seal. It was like someone turned on a garden hose in my truck when it rained. __________________ My Daily Driver Build: http://67-72chevytrucks.com/vboard/s...d.php?t=755668

02-19-2020, 09:57 AM	#7
truckster Senior Member Join Date: Jan 2001 Location: Orem, Utah Posts: 7,794	Re: OEM Windsheild Pilkington bought LOF, one of the two OEM suppliers. They have a division for classic glass. I haven't used them yet, but I understand you can even get the LOF and correct date stamp for restoration work. __________________ I have sworn upon the altar of God, eternal hostility against every form of tyranny over the mind of man. - Thomas Jefferson

02-19-2020, 03:53 PM	#9
Grumpy old man Senior Member Join Date: Dec 2013 Location: Gods country East,Tn Posts: 8,545	Re: OEM Windsheild Just call your local auto glass shops and get quotes from them on the glass you want . Don't pay to have glass shipped . __________________ 1967 Factory short bed - Old school '71 - 350 / 4bolt / 487 heads / Edelbrock C3BX Muncie M-22 4 speed / Hurst Comp plus Factory 12 bolt posi 3.73 / 255-70-15 Smoothed firewall / Factory cowl induction Power disc brakes / power steering / 3.5-5" drop

02-19-2020, 04:29 PM	#10
weq92f Registered User Join Date: Oct 2016 Location: Dallas Texas Posts: 2,877	Re: OEM Windsheild . FWIW PGW was the glass I broke XYG is what the local glass shop brought for replacement ( not yet installed ) Didn't measure thickness but will later when they come back to install after I get the right gasket. EDIT: both are green tint blue sun strip, pretty sure the CCC in a circle means it's from China! -klb Attached Images __________________ 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 Last edited by weq92f; 02-19-2020 at 04:37 PM.

02-19-2020, 04:51 PM	#12
truckster Senior Member Join Date: Jan 2001 Location: Orem, Utah Posts: 7,794	Re: OEM Windsheild Not necessarily made in China, but the CCC mark is required for it to be sold in China. E1 means it's certified by Germany. The DOT mark is, of course, for the US. I'm not sure what the others are. __________________ I have sworn upon the altar of God, eternal hostility against every form of tyranny over the mind of man. - Thomas Jefferson

02-20-2020, 12:34 AM	#15
toolboxchev Registered User Join Date: Jul 2015 Location: 2nd left past the stump on a dirt road. Posts: 2,629	Re: OEM Windsheild For what it is worth, Most folks on this website have all pretty much seen that new windshields are thinner than what came with the vehicle. Precision is at the top of their class with these gaskets. So much so, that Steele Rubber products actually buys this particular gasket from Precision. I had that conversation directly with Steele Products via email. The DOT spec I am under the impression will tell you the thickness if you can decode the spec.

02-20-2020, 10:30 AM	#17
sick472 Registered User Join Date: Jul 2015 Location: Sedalia Mo. Posts: 1,130	Re: OEM Windsheild I have dabbled in glass scratch removal without much success. I concluded it best left for one with good experience in performing the task. This will likely cost more than new glass. The problem comes from using the proper glass specific polish (don't believe the web when it says toothpaste works) and a high speed buffing tool (to keep you from rubbing your arms off for the rest of your life). Where it gets sketchy is that heat will be built up during the process and to much heat in an area causes the glass to crack and you can't buff that out. I found that very, very light scratches that wold be seen as a haze could be improved, but the actual linear scratches that you commonly see where someone ran wipers without rubbers or hit the glass with a wire wheel are not coming out without leaving a wrinkle in the glass due to having to buff so deep to remove the scratch. This would be unacceptable for me considering how much time it would take to remove the scratch, the wrinkle itself, and the risk of wasting that time due to cracking the glass. EDIT: Be aware that original or very old glass may have had the lamination separated around the edges. This is not too big of a deal until it draws moisture and the outer perimeter of the glass fogs up. I bought a used windshield many years ago that had, what appeared to be, nice antiquing along the bottom and sides that I thought I would use in my truck...after many years in storage the "antiquing" disappeared (or dried up). I have decided not to use it for fear that it would fog back up irregularly. I will be looking for the pilkington glass, precision seal, along with plenty of windshield sealer. __________________ He who is without oil shall throw the first rod. Compressions 8.7:1 1972 C10 1976 C10 (parts truck) 1985 K20 Last edited by sick472; 02-20-2020 at 10:37 AM.

02-20-2020, 11:36 AM	#18
71CHEVYSHORTBED402 Senior Member Join Date: Feb 2009 Location: Northern Nevada Posts: 7,118	Re: OEM Windsheild The guy installing my glass is vintage and best in the business. He says point blank OER are thinner. If I remember right he uses various vendors, even for the same part. __________________ Tony 71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assm. guide "kit" for restoring it from ground up. With assys, the guide accts for 1000s of OEM identifications and part numbers, all written in short order. 700+ images include assm, illust., charts, and points of interest. Much of the info. applies to all 67-72 GM trucks, and to a lessor degree all 67-72 GM vehicles. My build thread, and more on the guide https://67-72chevytrucks.com/vboard/...d.php?t=730025

02-21-2020, 11:48 AM	#19
weq92f Registered User Join Date: Oct 2016 Location: Dallas Texas Posts: 2,877	Re: OEM Windsheild . This is the XYG glass... -klb Attached Images __________________ 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

02-21-2020, 01:33 PM	#21
Daaaanz67 Registered User Join Date: Nov 2011 Location: Idaho Posts: 857	Re: OEM Windsheild I’ve read other threads and pilkington/precision was the answer to this issue. Anyways following this as this has always been a debating issue and maybe something new has come up.



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02-21-2020, 01:44 PM	#22
Astro-Balls Registered User Join Date: Feb 2019 Location: Nor Cal Posts: 822	Re: OEM Windsheild What is the thickness of Pilkington glass? __________________ 1968 C20 Fleetside 396 4sp PS PB AC CST . https://www.youtube.com/watch?v=RWK8GgWD4uA

02-21-2020, 01:50 PM	#23
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,936	Re: OEM Windsheild Even the manual says it needs sealer. Attached Images __________________ 1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.

02-21-2020, 01:55 PM	#24
Astro-Balls Registered User Join Date: Feb 2019 Location: Nor Cal Posts: 822	Re: OEM Windsheild I still have the original windshield and gasket that came out of my '68, they used a heck of a lot more sealant that just the top corners. __________________ 1968 C20 Fleetside 396 4sp PS PB AC CST . https://www.youtube.com/watch?v=RWK8GgWD4uA

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