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 1969 - 1972 Blazers and Jimmys Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 01-02-2019, 09:36 PM   #1
CJM72
Registered User
 
Join Date: Aug 2015
Location: Raynham, MA
Posts: 222
Gas tank mounting plates

Can anyone tell me how the black plate in the picture is installed? I know two of these came off when I dropped my old gas tank, but I can't find a picture on my phone or this website that shows where they go. Between the frame and gas tank flange? Where does the rubber anti-squeek strip go?
Name:  20190102_202527.jpg
Views: 466
Size:  19.8 KB
Name:  20190102_202543.jpg
Views: 508
Size:  26.0 KB
CJM72 is offline   Reply With Quote
Old 01-03-2019, 12:03 AM   #2
CJM72
Registered User
 
Join Date: Aug 2015
Location: Raynham, MA
Posts: 222
Re: Gas tank mounting plates

So after opening up roughly 50 different gas tank threads, I finally found a picture of these on someone elses build. It appears they are spacers that go between the frame and the tank to keep it from hitting the underside of the body. Does anyone know if they are supposed to be bolted on or just clamped in place by the straps? Seems odd to have the holes in the bracket and gas tank flange without bolts! Picture from another thread shows some that appear to be bolted in.
Name:  20160723_193524.jpg
Views: 511
Size:  30.0 KB
CJM72 is offline   Reply With Quote
Old 01-03-2019, 07:54 AM   #3
rsavage
Registered User
 
rsavage's Avatar
 
Join Date: Aug 2009
Location: Alden NY
Posts: 2,705
Re: Gas tank mounting plates

On the fill side (driver's side), there are two bolts that are a loop that go down through the frame. On the passenger side, the original straps have j bolts on the ends the go up in the frame holes. The bolts and J bolts go through the spacers between the tank and the frame as you picture. Mine had some insulation/isolator, almost like a fire hose material between the frame and the spacer if I remember correctly. I took a photo of the set up when I pulled the old tank but I can not find it on my phone or computer.
__________________
1961 C1 Corvette
1959 El Camino 350 TPI, 9" 4 w disc
69 Blazer K5 - sold July '20
2021 Durango RT 5.7
rsavage is offline   Reply With Quote
Old 01-03-2019, 08:45 AM   #4
A1971Blazer
Senior Member
 
A1971Blazer's Avatar
 
Join Date: Nov 2013
Location: East Tennessee
Posts: 2,199
Re: Gas tank mounting plates

Here is the only picture I have of the passenger side on a '71 K/5
You can see one of the straps where it hooks into the frame...
The spacer can be seen...up against the frame....with some kind of insulator between the spacer and the tank flange
Name:  photo 3 (4).jpg
Views: 496
Size:  45.0 KB
__________________
1967 C10 Step side
1968 C10 Step side
1970 Chevrolet K/5 Blazer
1972 Chevrolet K/5 Blazer
.............
A1971Blazer is offline   Reply With Quote
Old 01-03-2019, 10:55 PM   #5
CJM72
Registered User
 
Join Date: Aug 2015
Location: Raynham, MA
Posts: 222
Re: Gas tank mounting plates

Quote:
Originally Posted by A1971Blazer View Post
Here is the only picture I have of the passenger side on a '71 K/5
You can see one of the straps where it hooks into the frame...
The spacer can be seen...up against the frame....with some kind of insulator between the spacer and the tank flange
Attachment 1852985
Thanks for the picture. It doesn't look like there are any bolts fastening the spacer to the tank. I don't believe the u bolt or tank straps interface these plates or the tank flange at all.
CJM72 is offline   Reply With Quote
Old 01-03-2019, 11:46 PM   #6
rsavage
Registered User
 
rsavage's Avatar
 
Join Date: Aug 2009
Location: Alden NY
Posts: 2,705
Re: Gas tank mounting plates

I have both the strap j bolts and the driver's side loop bolts threaded through the tank holes and the spacers. I'll take a picture tomorrow. The replacement tanks do not have the tangs that would hold the passenger side plate in place. The j bolts do hold them in place on the tank flange and against the frame on my replacement tank. Per the assembly manual illustration provided further down by 69-72, the original set up didn't have the j bolts through the spacers or tank flange on that side.
__________________
1961 C1 Corvette
1959 El Camino 350 TPI, 9" 4 w disc
69 Blazer K5 - sold July '20
2021 Durango RT 5.7

Last edited by rsavage; 01-04-2019 at 11:30 AM.
rsavage is offline   Reply With Quote
Old 01-04-2019, 07:30 AM   #7
CJM72
Registered User
 
Join Date: Aug 2015
Location: Raynham, MA
Posts: 222
Re: Gas tank mounting plates

Quote:
Originally Posted by rsavage View Post
I have both the strap j bolts and the driver's side loop bolts threaded through the tank holes and the spacers. I'll take a picture tomorrow.
Thanks rsavage. The holes on my new tank flange are 7" on center but my u-bolt and tank strap indentations are 7.5" on center. Hopefully this weekend I'll have time go mock everything up. The j-bolt side of my straps were definitely not through the tank flange, but that doesn't make it correct! Can't remember the u-bolt side.
CJM72 is offline   Reply With Quote
Old 01-04-2019, 09:53 AM   #8
69-72
Registered User
 
69-72's Avatar
 
Join Date: May 2008
Location: 204
Posts: 903
Re: Gas tank mounting plates

Would you happen to have any spares of those plates? I have two driver sides but need a passenger side one.
Attached Images
 
__________________
1969 Chevy Custom Camper 3/4 ton Rust free survivor

1972 Chevy Blazer CST 4x4 Almost Rust free survivor

1972 GMC Jimmy 2wd Undergoing surgery
69-72 is offline   Reply With Quote
Old 01-04-2019, 11:19 AM   #9
rsavage
Registered User
 
rsavage's Avatar
 
Join Date: Aug 2009
Location: Alden NY
Posts: 2,705
Re: Gas tank mounting plates

69-72,
No I do not have any extra plates. It seems to me that they were identical pieces.
__________________
1961 C1 Corvette
1959 El Camino 350 TPI, 9" 4 w disc
69 Blazer K5 - sold July '20
2021 Durango RT 5.7
rsavage is offline   Reply With Quote
Old 01-04-2019, 12:00 PM   #10
69-72
Registered User
 
69-72's Avatar
 
Join Date: May 2008
Location: 204
Posts: 903
Re: Gas tank mounting plates

Quote:
Originally Posted by rsavage View Post
69-72,
No I do not have any extra plates. It seems to me that they were identical pieces.
Ok thanks. They are side specific at least mine are. Something to watch for when you install
__________________
1969 Chevy Custom Camper 3/4 ton Rust free survivor

1972 Chevy Blazer CST 4x4 Almost Rust free survivor

1972 GMC Jimmy 2wd Undergoing surgery
69-72 is offline   Reply With Quote
Reply

Bookmarks


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 -4. The time now is 10:34 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com