The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1947 - 1959 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 08-16-2010, 10:34 AM   #1
dewey777
Registered User
 
dewey777's Avatar
 
Join Date: Mar 2010
Location: Red Deer, Alberta
Posts: 69
1959 Big Back Window 3 point seatbelts

So I am going to start this thread, I've done searches and commented on some other threads but have not actually talked with anyone who has done it.

Has anyone installed 3 point seat belts in a Big Back Window????????

I plunged ahead and drilled my pillar to find out that it is not completely hollow like it appears to be. What do I do now?

Here is a crude top view picture of what the inside of the pillar looks like. I could cut larger hole in the face of the pillar to install a flat bar in and a nut and then patch it in after but I wanted to get some ideas first.

The PO (previous owner) had installed the 3 points with a piece of flat metal and a nut up high (above the window) but it is way too high and the seatbelt does not even touch your shoulder. I want to lower it for comfort and safety. I will post some pics later.
Attached Images
 
__________________
1959 Chev Apache 3100 Short Fleet Big Window
dewey777 is offline   Reply With Quote
Old 08-16-2010, 01:07 PM   #2
blackdiesel
Registered User
 
blackdiesel's Avatar
 
Join Date: Jan 2009
Location: Omaha, Arkansas
Posts: 923
Re: 1959 Big Back Window 3 point seatbelts

We have done 3 of then. We just drilled a 3/4" hole beside the fold your talkin about and welded in a 1/2" nut in it. You just want it about 4-5" above the seat back. If you get it to high you will regret it.
__________________
'57 Chevy Pickup
'56 GMC LCF Cummins
'38 Chrysler Royal
'57 2wd change
http://67-72chevytrucks.com/vboard/s...light=speedway
blackdiesel is offline   Reply With Quote
Old 08-16-2010, 01:42 PM   #3
dewey777
Registered User
 
dewey777's Avatar
 
Join Date: Mar 2010
Location: Red Deer, Alberta
Posts: 69
Re: 1959 Big Back Window 3 point seatbelts

I thought about that but wondered if there was any legality just welding a nut to sheet metal? Was hoping to have some metal in behind to help distribute the load.
__________________
1959 Chev Apache 3100 Short Fleet Big Window
dewey777 is offline   Reply With Quote
Old 08-16-2010, 02:21 PM   #4
Tri5Nerd
Tripple Five Fanatic
 
Tri5Nerd's Avatar
 
Join Date: Sep 2006
Location: USA
Posts: 657
Re: 1959 Big Back Window 3 point seatbelts

How safe is that with just welding a nut in the sheetmetal? I would think there are safer solution out there but I've not seen them. I'll be looking at this sometime soon.

Tri5
__________________
1955 Chevy Stepside/LS1 drive train
http://67-72chevytrucks.com/vboard/s...d.php?t=371513
Tri5Nerd is offline   Reply With Quote
Old 08-16-2010, 07:21 PM   #5
blackdiesel
Registered User
 
blackdiesel's Avatar
 
Join Date: Jan 2009
Location: Omaha, Arkansas
Posts: 923
Re: 1959 Big Back Window 3 point seatbelts

It depends on the welder I guess. You should see some of the OEM mounts. Thats not just sheet metal there. It's 3 layers thick. I guess that we're (me, dad and grandpa and all that rides with us) are beting our life on it. You do as you like. He just ask what others have done.
__________________
'57 Chevy Pickup
'56 GMC LCF Cummins
'38 Chrysler Royal
'57 2wd change
http://67-72chevytrucks.com/vboard/s...light=speedway
blackdiesel is offline   Reply With Quote
Old 08-16-2010, 08:11 PM   #6
Mr GMC
Registered User
 
Mr GMC's Avatar
 
Join Date: Aug 2010
Location: cameron park, ca.
Posts: 89
Re: 1959 Big Back Window 3 point seatbelts

I wanted to put a three point in a 58 suburban I had but sold it before getting to it. My truck is already restored and it is stock so I hate to start cutting and drilling. Years ago I was rear ended in a 68 Chevy p/u. After my head hit the back glass my face hit the steering wheel. wish I had shoulder belts.
Mr GMC is offline   Reply With Quote
Old 08-16-2010, 10:33 PM   #7
Tri5Nerd
Tripple Five Fanatic
 
Tri5Nerd's Avatar
 
Join Date: Sep 2006
Location: USA
Posts: 657
Re: 1959 Big Back Window 3 point seatbelts

Quote:
Originally Posted by blackdiesel View Post
It depends on the welder I guess. You should see some of the OEM mounts. Thats not just sheet metal there. It's 3 layers thick. I guess that we're (me, dad and grandpa and all that rides with us) are beting our life on it. You do as you like. He just ask what others have done.
Blackdiesel,
Not trying to offend you, I just wanted to know how safe and strong that would be, I didn't know that there were 3 layers of metal there and thought that someone else had another solution, I'm looking into using a seat with the belt built in the seat, the later year chevy trucks/suburbans. I join this forum to learn and try to provide info if I have it so I'm sorry if my question was offensive.

Tri5
__________________
1955 Chevy Stepside/LS1 drive train
http://67-72chevytrucks.com/vboard/s...d.php?t=371513
Tri5Nerd is offline   Reply With Quote
Old 08-16-2010, 11:11 PM   #8
OrrieG
Registered User
 
OrrieG's Avatar
 
Join Date: Jun 2006
Location: Idaho
Posts: 7,569
Re: 1959 Big Back Window 3 point seatbelts

I am using Yukon third row seats with the belts built in. I figure GM did the engineering. I am using the stock mounting method welded to a frame that uses the stock seat mounting bolts. I calced my connections and welds based on the stock seat floor bolts being the weakest link. My floors are solid with no rust. If I get in trouble enough to shear the floor bolts seat belts are going to be the least of my worries.
__________________
1959 Chevy Short Fleetside w/ 74 4WD drive train (current project) OrrieG Build Thread
1964 Chevelle Malibu w/ 355-350TH (daily driver)
Helpful AD and TF Manual Site Old Car Manual Project
OrrieG is offline   Reply With Quote
Old 08-17-2010, 06:24 AM   #9
OKGMC4
Registered User
 
OKGMC4's Avatar
 
Join Date: Oct 2009
Location: Broken Arrow, OK
Posts: 743
Re: 1959 Big Back Window 3 point seatbelts

Ya. I had the same safety concerns and ended up with Dodge seats with built in belts to make me feel better about it. I see trucks all the time with lap belts or no belts and stock bench seats. I also liked the high back idea to keep my head off the glass in a rear end collision, but they won't look as dorky in my small window cab as they would in a big back window. Trying to re-engineer 50's technology makes me appreciate the comforts of my late model daily driver!
__________________
56 GMC BUILD THREAD:
http://67-72chevytrucks.com/vboard/s...d.php?t=368649

69/67 chevy/gmc LS powered slice and dice:
http://67-72chevytrucks.com/vboard/s...d.php?t=624747

One piece window conversion Blackdiesel style:
http://67-72chevytrucks.com/vboard/s...d.php?t=366078
OKGMC4 is offline   Reply With Quote
Old 08-17-2010, 06:52 AM   #10
blackdiesel
Registered User
 
blackdiesel's Avatar
 
Join Date: Jan 2009
Location: Omaha, Arkansas
Posts: 923
Re: 1959 Big Back Window 3 point seatbelts

The seatbelt reel on the 06 dodge 2500 that I rebuilt the other day just had one bolt in the B-pillar that was about 1/2" from the edge of a big hole. It looked like it would be real easy to pull out to me. Testing a seatbelt mount would be about like try to catch a bullet in your mouth, you pitch it to them a couple of times to get the hang of it.... then you put the next one in a gun and as your pointing it at their head you tell him "this ones going to be a little FASTER". You just have to do what's comfortable for you, look at some OEM suff to get some ideas and go from there. and no offence taken
__________________
'57 Chevy Pickup
'56 GMC LCF Cummins
'38 Chrysler Royal
'57 2wd change
http://67-72chevytrucks.com/vboard/s...light=speedway

Last edited by blackdiesel; 08-19-2010 at 05:49 PM.
blackdiesel is offline   Reply With Quote
Old 08-17-2010, 10:44 PM   #11
bobinbc
Buildin it one piece at a time
 
bobinbc's Avatar
 
Join Date: Mar 2009
Location: Prince George, B.C. CANADA
Posts: 302
Re: 1959 Big Back Window 3 point seatbelts

I have a big window truck as well and plan to look around for a real rusty and/or wrecked BW cab that I can cut up to have a look inside that pillar. If anyone has one they'd be willing to take the saw to I'd be really intererested in seeing pics.....anyone???
__________________
Flamed , dropped and raced 57 sbss -Sold it (Stupid, stupid, stupid)

Current project - another 57 sbss - build thread here http://www.67-72chevytrucks.com/vboa...d.php?t=413635
bobinbc is offline   Reply With Quote
Old 08-18-2010, 08:59 AM   #12
dewey777
Registered User
 
dewey777's Avatar
 
Join Date: Mar 2010
Location: Red Deer, Alberta
Posts: 69
Re: 1959 Big Back Window 3 point seatbelts

Thanks for the replies, I might cut open the door side of the pillar and see if I can cut in a plate of some kind. Not sure when I will get to it but I will post pics if I go ahead.

Has anyone used the height adjustable mounts from a newer vehicle? I might check out the junkyard and see what they look like and if it's possible.....
(pic courtesy of google, only thing I could find)
Attached Images
 
__________________
1959 Chev Apache 3100 Short Fleet Big Window
dewey777 is offline   Reply With Quote
Old 02-10-2015, 05:16 PM   #13
gono
Registered User
 
gono's Avatar
 
Join Date: Mar 2012
Location: Grover Beach, CA
Posts: 77
Re: 1959 Big Back Window 3 point seatbelts

Any updates on this? I've read a few articles online but I'm curious if any one has pictures to go with their install. Good junkyards are hard to come by in my area so I would be online. If anyone could recommend a company/website that would be great.
__________________
55' 3100 big window
gono is offline   Reply With Quote
Old 02-12-2015, 12:50 AM   #14
Litefoot Sr
Registered User
 
Join Date: Feb 2015
Location: Santa Cruz, Ca
Posts: 4
Re: 1959 Big Back Window 3 point seatbelts

I have a big back window, and I used 3 point seats out of a 2006 Chevy Silverado. They do stick up above the window but if you tint the glass, it's not that noticiple. IMHA
Litefoot Sr is offline   Reply With Quote
Old 02-12-2015, 08:35 AM   #15
octanejunkie
Registered User
 
octanejunkie's Avatar
 
Join Date: Jan 2015
Location: Santa Monica
Posts: 263
Re: 1959 Big Back Window 3 point seatbelts

I am using adjustable height front seatbelts out of a 90s Tahoe. Works great.

I mounted them right behind the pillar so you don't see the sliding head piece from the window.
Seat is Astro van 3rd row w GM seatbelt receivers attached. Middle seatbelt is lap-belt only.





__________________
Déjà vu. It's that feeling you get when you hit your thumb with the hammer a second time

'59 Chevy 3100 Stepside

Last edited by octanejunkie; 02-12-2015 at 08:41 AM.
octanejunkie is offline   Reply With Quote
Old 02-12-2015, 09:02 AM   #16
gono
Registered User
 
gono's Avatar
 
Join Date: Mar 2012
Location: Grover Beach, CA
Posts: 77
Re: 1959 Big Back Window 3 point seatbelts

Quote:
Originally Posted by Litefoot Sr View Post
I have a big back window, and I used 3 point seats out of a 2006 Chevy Silverado. They do stick up above the window but if you tint the glass, it's not that noticiple. IMHA
Do you happen to have any pictures?
__________________
55' 3100 big window
gono is offline   Reply With Quote
Old 02-12-2015, 10:57 AM   #17
dsraven
Registered User
 
Join Date: Nov 2010
Location: calgary alberta
Posts: 74
Re: 1959 Big Back Window 3 point seatbelts

I know this is a small window cab but here is a pic of what it looks like with the skin off. I would say use a seat with belts in it or do some reinforcing behind there. what if you drilled an oversize hole in the cab where you want the nut anchor point, then slice a hole in the door jamb from the front facing edge and slide in a piece of flat bar (with a hole already drilled in it) then weld the nut to the bar (through the hole in the sheet metal) and cap it all up nicely when done. that way there is something back there at least. make sure to pull the flat bar against the sheet metal before you weld. maybe work?
Attached Images
 
dsraven is offline   Reply With Quote
Old 02-12-2015, 11:08 AM   #18
dsraven
Registered User
 
Join Date: Nov 2010
Location: calgary alberta
Posts: 74
Re: 1959 Big Back Window 3 point seatbelts

ok, that idea may not work. I found a pic of what that rear wall looks like with the outer skin off. it is an inner panel that you can see from inside the cab behind the tank. then a sandwiched support panel that is hidden between the inner and outer panels. then the outer skin. maybe you can blow that pic up enough to see what it looks like. you could try looking online for a pic of the replacement panel set and see what the parts look like. maybe then visualize how it goes together from looking at this pic? not much room there for the flat bar idea I had in the last post.
good luck
Attached Images
 
dsraven is offline   Reply With Quote
Old 02-12-2015, 04:11 PM   #19
gono
Registered User
 
gono's Avatar
 
Join Date: Mar 2012
Location: Grover Beach, CA
Posts: 77
Re: 1959 Big Back Window 3 point seatbelts

Thanks for the pix. With the pix, I still might be able to figure out how to weld a plate in there. I was hesitant at first to use 3 point seat belts because of being visible through the big window. I wanted a clean stock look. That was before I had kids. So, my kids will want to go for rides with me and, well, enough said. Still not sure about the middle seat. might go with a 4 point harness.
__________________
55' 3100 big window
gono is offline   Reply With Quote
Old 02-12-2015, 05:49 PM   #20
Dan in Pasadena
Registered User
 
Dan in Pasadena's Avatar
 
Join Date: Nov 2008
Location: Pasadena, CA
Posts: 3,895
Re: 1959 Big Back Window 3 point seatbelts

Quote:
Originally Posted by dsraven View Post
I know this is a small window cab but here is a pic of what it looks like with the skin off. I would say use a seat with belts in it or do some reinforcing behind there. what if you drilled an oversize hole in the cab where you want the nut anchor point, then slice a hole in the door jamb from the front facing edge and slide in a piece of flat bar (with a hole already drilled in it) then weld the nut to the bar (through the hole in the sheet metal) and cap it all up nicely when done. that way there is something back there at least. make sure to pull the flat bar against the sheet metal before you weld. maybe work?
I like this idea but the flat bar would be narrow, wouldn't it? Like 1/2"?
But if you make it long, say 12" you could drill through the sheet metal say 2 or 3 times above and below the actual shoulder anchor nut and rosette weld the sheet metal to the bar. Grind smooth, a little filler and primer and you're there. That'd be pretty strong, wouldn't it?
__________________
'55 Big Window Shortbed
283/350/10 Bolt
15x7 vintage TT knockoffs
Finned Valve Covers & [..Wait...Stop the Presses.
It has become a FRAME OFF RODSTORATION!!!]
Fluids, filters, belts, hoses & wires replaced
Radiator redo, chrome alternator, Pertronix
Windshield, Mirrors, Bumpers, Signals, Door Handles all new

Dan's '55 Big Window "Build" - Well, Kinda!
Dan in Pasadena is online now   Reply With Quote
Old 02-12-2015, 06:41 PM   #21
dsraven
Registered User
 
Join Date: Nov 2010
Location: calgary alberta
Posts: 74
Re: 1959 Big Back Window 3 point seatbelts

if it was me I would really look at a seat with the belts in the seat for the 2 outside ones, and maybe lap belts for the middle? what do you have for seats now? buckets? bench? just saying that because the seats are already made to handle the belt, unlike the pillar. there is a lot of strain on an anchor if there would ever be a crash. better safe than sorry. the floor under the seat is wayyy easier to beef up than the pillar is.
what about a whole new channel, made up from 16 guage or something, that has a double plate anchor on the back side with a nut prewelded in flush and could be welded to the original post? would there be room? that would make it a lot stronger. might not look awesome though. you could dress it up or even put an adjustable anchor on the channel.
dsraven is offline   Reply With Quote
Old 02-12-2015, 08:02 PM   #22
gono
Registered User
 
gono's Avatar
 
Join Date: Mar 2012
Location: Grover Beach, CA
Posts: 77
Re: 1959 Big Back Window 3 point seatbelts

right now I have a bench seat that my dad used in it when he drove it. So there's some sentimental value in keeping it. The seat frame was cut down so that the back of the bench is just below the window. The few seats if seen at car shows that have the belts built into them tend to be a bit taller than I would prefer. right now I'm leaning towards modifying the pillar.
__________________
55' 3100 big window
gono is offline   Reply With Quote
Old 02-12-2015, 08:09 PM   #23
dsraven
Registered User
 
Join Date: Nov 2010
Location: calgary alberta
Posts: 74
Re: 1959 Big Back Window 3 point seatbelts

I know some guys are using the split bench from the 88-98 chevy pick ups. they remove the headrests and then the seats fit pretty good. they don't, however, have the seat belts in the seats. maybe a trip to picknpull is in order. walk the yard and see if there are some low back seats with belts built in?
dsraven is offline   Reply With Quote
Old 02-12-2015, 10:23 PM   #24
Litefoot Sr
Registered User
 
Join Date: Feb 2015
Location: Santa Cruz, Ca
Posts: 4
Re: 1959 Big Back Window 3 point seatbelts

i attached photos of the Siverado seats I used, but unfortunately known are at the right angle showing the back of the seat from inside. One photo shows the seat from the rear before i installed the back glass, so you can see how high and the shape. The last pic shows the tinted glass installed so it pretty much disappears from the back. I'll try to get another shot from inside tomorrow.
Attached Images
   
Litefoot Sr is offline   Reply With Quote
Old 02-12-2015, 10:38 PM   #25
dsraven
Registered User
 
Join Date: Nov 2010
Location: calgary alberta
Posts: 74
Re: 1959 Big Back Window 3 point seatbelts

wow, nice paint. it looks like you dipped the truck. I always liked that blue. My dad's truck was that color, or close. 59 chev apache. sold a couple months before I got my license.
dsraven is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 09:29 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2015, vBulletin Solutions, Inc.
Copyright 1997-2013 67-72chevytrucks.com