Big Back window conversion panel - The 1947 - Present Chevrolet & GMC Truck Message Board Network

sstock · 05-17-2020, 08:28 PM

Anyone interested in doing the little window to big window conversion, I just finished the cutting and fitment of the inner panel. This was very straight forward and the fit of this reproduction panel was factory perfect on my 64 GMC.
Kudos to Classic Chevy Truck for bringing a quality part to the market place. It was a tad expensive but there was no cutting or fabrication needed other than removal of the old inner panel and cutting the old rear window frame out. There were, it seems an endless supply of spot welds to grind away.

Some good videos to preview if interested:

https://www.youtube.com/watch?time_c...ature=emb_logo

https://www.youtube.com/watch?time_c...ature=emb_logo

**Captainfab** · 05-17-2020, 10:09 PM

Was the fitment at the seam with the roof good?

sstock · 05-17-2020, 10:38 PM

Quote:

Originally Posted by Captainfab

Was the fitment at the seam with the roof good?

Yes, where the inner roof panel meets the inner back panel appeared factory fitted. I'll try and get a better picture in after it is completely installed.

roll_the_dice · 05-19-2020, 11:21 AM

Thanks for posting. Wish I had seen this last year or earlier...already too far along in my project to do it, but looks like a good alternative to what I have seen in the past. Looks a little less daunting than other methods too. Keep us updated on your project and finished pictures when you are done.

shortstep60 · 05-20-2020, 12:37 AM

I have put my share of big back window section in 60-66 trucks. People have ask me how I get the top section to come together. I drill two hole on the inside of the dome light on each side. Then I put it in place mark the two holes and drill them you can not get inside of the dome light and drill straight threw the panel. Then put your panel back in place and get two self tapping screws and pull your top section together. If any of you need help pm me and I will try to help you out.

sstock · 05-20-2020, 11:42 AM

Quote:

Originally Posted by shortstep60

I have put my share of big back window section in 60-66 trucks. People have ask me how I get the top section to come together. I drill two hole on the inside of the dome light on each side. Then I put it in place mark the two holes and drill them you can not get inside of the dome light and drill straight threw the panel. Then put your panel back in place and get two self tapping screws and pull your top section together. If any of you need help pm me and I will try to help you out.

I like that, with the panel bond it will be well secured.

**1971 GMC SHORTY** · 05-21-2020, 01:06 AM

Can’t Wait To Do Mine After All This Cornd-19 is Over

05-17-2020, 08:28 PM	#1
sstock Registered User Join Date: Mar 2014 Location: Tacoma Wa Posts: 146	Big Back window conversion panel Anyone interested in doing the little window to big window conversion, I just finished the cutting and fitment of the inner panel. This was very straight forward and the fit of this reproduction panel was factory perfect on my 64 GMC. Kudos to Classic Chevy Truck for bringing a quality part to the market place. It was a tad expensive but there was no cutting or fabrication needed other than removal of the old inner panel and cutting the old rear window frame out. There were, it seems an endless supply of spot welds to grind away. Some good videos to preview if interested: https://www.youtube.com/watch?time_c...ature=emb_logo https://www.youtube.com/watch?time_c...ature=emb_logo Attached Images __________________ 1953 3100 261cu in, sm420, 3.55 torque tube, omaha orange 1964 GMC 1000 series,custom, 305E, sm420 Last edited by sstock; 05-17-2020 at 08:34 PM.

05-17-2020, 10:09 PM	#2
Captainfab 60-66 Nut Join Date: Mar 2007 Location: Coeur d'Alene, Idaho Posts: 23,252	Re: Big Back window conversion panel Was the fitment at the seam with the roof good? __________________ Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE

05-19-2020, 11:21 AM	#4
roll_the_dice Registered User Join Date: Mar 2016 Location: Manlius, NY Posts: 1,698	Re: Big Back window conversion panel Thanks for posting. Wish I had seen this last year or earlier...already too far along in my project to do it, but looks like a good alternative to what I have seen in the past. Looks a little less daunting than other methods too. Keep us updated on your project and finished pictures when you are done. __________________ 1965 C10 LWB Stepside 1964 GMC 1 Ton Dually Instagram #notaratrodnotashowtruck

05-20-2020, 12:37 AM	#5
shortstep60 Registered User Join Date: Nov 2013 Location: Mayetta, Kansas Posts: 439	Re: Big Back window conversion panel I have put my share of big back window section in 60-66 trucks. People have ask me how I get the top section to come together. I drill two hole on the inside of the dome light on each side. Then I put it in place mark the two holes and drill them you can not get inside of the dome light and drill straight threw the panel. Then put your panel back in place and get two self tapping screws and pull your top section together. If any of you need help pm me and I will try to help you out.

05-21-2020, 01:06 AM	#7
1971 GMC SHORTY Senior Member Join Date: Apr 2009 Location: SAN FERNANDO VALLE SOL CAL Posts: 1,064	Re: Big Back window conversion panel Can’t Wait To Do Mine After All This Cornd-19 is Over __________________ 1966 GMC K25 V6 351E Original Utility Truck 2000 C3500 Hot Rod Utility Truck 2003 ROAD KING 100th 124ci 6 Speed 145CI M/P Pro Street FXR 2002 FXDP 2007 2500HD DURAMAX. DD Studio Teamsters / Mechanic Retired GM Master Tech 20 Years Retired Ford Tech 15 Years



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