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 08-08-2020, 09:15 PM   #1
DeadheadNM
Carpe manana

 
DeadheadNM's Avatar
 
Join Date: Dec 2010
Location: Eau Claire, WI
Posts: 12,261
Blazer and Jimmy Fuel Neck Styles

Surprisingly there are different styles. I thought I’d illustrate the differences with photos drawn from here on the forum. Feel free to clarify if anything is incorrect or add more to expound.

Here are examples of the 69-70 style...two-piece
Attached Images
    
__________________
1972 K5 CST Highlander Blazer: http://67-72chevytrucks.com/vboard/s...d.php?t=708547
1972 K20 Cheyenne Super: http://67-72chevytrucks.com/vboard/s...d.php?t=528308

Members met: ORANGBLAZ, 2003 silverado, MikeCofield, BB72CHEVKT, Duncan&Son, Sameyrasmea72, THENEWMEXICAN, HotRod C/10, brianthelion02, Sport/Truck, ryanroo, michael bustamante, Dirt's72, Already Gone, WestButteTruck, 57taskforce, Moreyel, painterljp, AASmedic, SoCoC10, Lumaestas, carbuff382, Chevyland
DeadheadNM is offline   Reply With Quote
Old 08-08-2020, 09:16 PM   #2
DeadheadNM
Carpe manana

 
DeadheadNM's Avatar
 
Join Date: Dec 2010
Location: Eau Claire, WI
Posts: 12,261
Re: Blazer and Jimmy Fuel Neck Styles

1971 - also a two-piece...I believe the upper part that attaches to the bedside is the same used on 71-72 pickup RPO NL2 aux fuel tanks.
Attached Images
  
__________________
1972 K5 CST Highlander Blazer: http://67-72chevytrucks.com/vboard/s...d.php?t=708547
1972 K20 Cheyenne Super: http://67-72chevytrucks.com/vboard/s...d.php?t=528308

Members met: ORANGBLAZ, 2003 silverado, MikeCofield, BB72CHEVKT, Duncan&Son, Sameyrasmea72, THENEWMEXICAN, HotRod C/10, brianthelion02, Sport/Truck, ryanroo, michael bustamante, Dirt's72, Already Gone, WestButteTruck, 57taskforce, Moreyel, painterljp, AASmedic, SoCoC10, Lumaestas, carbuff382, Chevyland

Last edited by DeadheadNM; 08-08-2020 at 09:21 PM. Reason: Added
DeadheadNM is offline   Reply With Quote
Old 08-08-2020, 09:18 PM   #3
DeadheadNM
Carpe manana

 
DeadheadNM's Avatar
 
Join Date: Dec 2010
Location: Eau Claire, WI
Posts: 12,261
Re: Blazer and Jimmy Fuel Neck Styles

1972 one-piece style...note use of a tie strap securing the vapor hose to the metal pipe above the floor pan
Attached Images
    
__________________
1972 K5 CST Highlander Blazer: http://67-72chevytrucks.com/vboard/s...d.php?t=708547
1972 K20 Cheyenne Super: http://67-72chevytrucks.com/vboard/s...d.php?t=528308

Members met: ORANGBLAZ, 2003 silverado, MikeCofield, BB72CHEVKT, Duncan&Son, Sameyrasmea72, THENEWMEXICAN, HotRod C/10, brianthelion02, Sport/Truck, ryanroo, michael bustamante, Dirt's72, Already Gone, WestButteTruck, 57taskforce, Moreyel, painterljp, AASmedic, SoCoC10, Lumaestas, carbuff382, Chevyland

Last edited by DeadheadNM; 08-08-2020 at 09:37 PM. Reason: Added
DeadheadNM is offline   Reply With Quote
Old 08-08-2020, 09:33 PM   #4
DeadheadNM
Carpe manana

 
DeadheadNM's Avatar
 
Join Date: Dec 2010
Location: Eau Claire, WI
Posts: 12,261
Re: Blazer and Jimmy Fuel Neck Styles

I suspect all years made use of this bracket to support the fuel line and accompanying vapor line below the floor pan.

Non-CST K5s used the metal cover over the fuel neck. CSTs had the rear panels that served to cover the neck.
Attached Images
  
__________________
1972 K5 CST Highlander Blazer: http://67-72chevytrucks.com/vboard/s...d.php?t=708547
1972 K20 Cheyenne Super: http://67-72chevytrucks.com/vboard/s...d.php?t=528308

Members met: ORANGBLAZ, 2003 silverado, MikeCofield, BB72CHEVKT, Duncan&Son, Sameyrasmea72, THENEWMEXICAN, HotRod C/10, brianthelion02, Sport/Truck, ryanroo, michael bustamante, Dirt's72, Already Gone, WestButteTruck, 57taskforce, Moreyel, painterljp, AASmedic, SoCoC10, Lumaestas, carbuff382, Chevyland

Last edited by DeadheadNM; 08-08-2020 at 10:00 PM. Reason: Added
DeadheadNM is offline   Reply With Quote
Old 08-08-2020, 09:38 PM   #5
DeadheadNM
Carpe manana

 
DeadheadNM's Avatar
 
Join Date: Dec 2010
Location: Eau Claire, WI
Posts: 12,261
Re: Blazer and Jimmy Fuel Neck Styles

Options for replacement fuel hoses...

Gates 24702 w 1.375” ID https://www.jegs.com/i/Gates/465/24702/10002/-1

GM if it can be found.
Attached Images
 
__________________
1972 K5 CST Highlander Blazer: http://67-72chevytrucks.com/vboard/s...d.php?t=708547
1972 K20 Cheyenne Super: http://67-72chevytrucks.com/vboard/s...d.php?t=528308

Members met: ORANGBLAZ, 2003 silverado, MikeCofield, BB72CHEVKT, Duncan&Son, Sameyrasmea72, THENEWMEXICAN, HotRod C/10, brianthelion02, Sport/Truck, ryanroo, michael bustamante, Dirt's72, Already Gone, WestButteTruck, 57taskforce, Moreyel, painterljp, AASmedic, SoCoC10, Lumaestas, carbuff382, Chevyland

Last edited by DeadheadNM; 08-08-2020 at 10:07 PM. Reason: Added
DeadheadNM is offline   Reply With Quote
Old 08-08-2020, 09:40 PM   #6
1rippen6
Senior Member
 
Join Date: May 2011
Location: Greencastle PA
Posts: 6,684
Re: Blazer and Jimmy Fuel Neck Styles

Great post!
1rippen6 is offline   Reply With Quote
Old 08-08-2020, 09:45 PM   #7
DeadheadNM
Carpe manana

 
DeadheadNM's Avatar
 
Join Date: Dec 2010
Location: Eau Claire, WI
Posts: 12,261
Re: Blazer and Jimmy Fuel Neck Styles

Quote:
Originally Posted by 1rippen6 View Post
Great post!
Thanks Dwayne. Fun stuff. You were an inspiration for the idea based on an old post of yours. Crazy that GM changed the style this many times.
__________________
1972 K5 CST Highlander Blazer: http://67-72chevytrucks.com/vboard/s...d.php?t=708547
1972 K20 Cheyenne Super: http://67-72chevytrucks.com/vboard/s...d.php?t=528308

Members met: ORANGBLAZ, 2003 silverado, MikeCofield, BB72CHEVKT, Duncan&Son, Sameyrasmea72, THENEWMEXICAN, HotRod C/10, brianthelion02, Sport/Truck, ryanroo, michael bustamante, Dirt's72, Already Gone, WestButteTruck, 57taskforce, Moreyel, painterljp, AASmedic, SoCoC10, Lumaestas, carbuff382, Chevyland
DeadheadNM is offline   Reply With Quote
Old 08-08-2020, 11:07 PM   #8
davischevy
Senior Member

 
davischevy's Avatar
 
Join Date: Sep 2008
Location: Harrison, Arkansas
Posts: 9,780
Re: Blazer and Jimmy Fuel Neck Styles

All I can say is subscribed. It's too late for my brain to process all that.
__________________
other Larry


Build thread, Arkansas K10
https://67-72chevytrucks.com/vboard/...=755797&page=5





The ability to speak several languages is an asset, but the ability to keep your mouth shut in any language is priceless.
davischevy is offline   Reply With Quote
Old 08-09-2020, 08:25 PM   #9
1972CST
Registered User
 
1972CST's Avatar
 
Join Date: Mar 2008
Location: Concord NC
Posts: 511
Re: Blazer and Jimmy Fuel Neck Styles

Never realized that there were so many differences.

Where is the best place to find info on the pipe that goes next to the filler neck with the 3 small hose connections at the bottom?
1972CST is offline   Reply With Quote
Old 08-09-2020, 08:30 PM   #10
DeadheadNM
Carpe manana

 
DeadheadNM's Avatar
 
Join Date: Dec 2010
Location: Eau Claire, WI
Posts: 12,261
Re: Blazer and Jimmy Fuel Neck Styles

Factory assembly manual is a good start plus photos from prior builds and part outs. I think there is some variation in tank plumbing for 72 compared with other years. Here’s an example diagram from said manual - I’ll post a pic from my 72 build.
Attached Images
     
__________________
1972 K5 CST Highlander Blazer: http://67-72chevytrucks.com/vboard/s...d.php?t=708547
1972 K20 Cheyenne Super: http://67-72chevytrucks.com/vboard/s...d.php?t=528308

Members met: ORANGBLAZ, 2003 silverado, MikeCofield, BB72CHEVKT, Duncan&Son, Sameyrasmea72, THENEWMEXICAN, HotRod C/10, brianthelion02, Sport/Truck, ryanroo, michael bustamante, Dirt's72, Already Gone, WestButteTruck, 57taskforce, Moreyel, painterljp, AASmedic, SoCoC10, Lumaestas, carbuff382, Chevyland

Last edited by DeadheadNM; 08-09-2020 at 08:38 PM. Reason: Added
DeadheadNM is offline   Reply With Quote
Old 08-09-2020, 08:56 PM   #11
DeadheadNM
Carpe manana

 
DeadheadNM's Avatar
 
Join Date: Dec 2010
Location: Eau Claire, WI
Posts: 12,261
Re: Blazer and Jimmy Fuel Neck Styles

Here’s an example of the most recent aftermarket iteration of the K5 fuel tank with the correctly configured neck.

(All borrowed pics, thanks for posting)
Attached Images
  
__________________
1972 K5 CST Highlander Blazer: http://67-72chevytrucks.com/vboard/s...d.php?t=708547
1972 K20 Cheyenne Super: http://67-72chevytrucks.com/vboard/s...d.php?t=528308

Members met: ORANGBLAZ, 2003 silverado, MikeCofield, BB72CHEVKT, Duncan&Son, Sameyrasmea72, THENEWMEXICAN, HotRod C/10, brianthelion02, Sport/Truck, ryanroo, michael bustamante, Dirt's72, Already Gone, WestButteTruck, 57taskforce, Moreyel, painterljp, AASmedic, SoCoC10, Lumaestas, carbuff382, Chevyland

Last edited by DeadheadNM; 08-09-2020 at 08:56 PM. Reason: Added
DeadheadNM is offline   Reply With Quote
Old 08-11-2020, 03:12 PM   #12
1972CST
Registered User
 
1972CST's Avatar
 
Join Date: Mar 2008
Location: Concord NC
Posts: 511
Re: Blazer and Jimmy Fuel Neck Styles

Thanks Deadhead, I appreciate it.

I dont have the evap canister so I am looking at options for simplifying all of the pipes, hoses and connections.
The evap system seems a little excessive for such a primitive vehicle.
1972CST is offline   Reply With Quote
Old 08-11-2020, 10:40 PM   #13
DeadheadNM
Carpe manana

 
DeadheadNM's Avatar
 
Join Date: Dec 2010
Location: Eau Claire, WI
Posts: 12,261
Re: Blazer and Jimmy Fuel Neck Styles

You bet. Good luck with your build.
__________________
1972 K5 CST Highlander Blazer: http://67-72chevytrucks.com/vboard/s...d.php?t=708547
1972 K20 Cheyenne Super: http://67-72chevytrucks.com/vboard/s...d.php?t=528308

Members met: ORANGBLAZ, 2003 silverado, MikeCofield, BB72CHEVKT, Duncan&Son, Sameyrasmea72, THENEWMEXICAN, HotRod C/10, brianthelion02, Sport/Truck, ryanroo, michael bustamante, Dirt's72, Already Gone, WestButteTruck, 57taskforce, Moreyel, painterljp, AASmedic, SoCoC10, Lumaestas, carbuff382, Chevyland
DeadheadNM is offline   Reply With Quote
Old 08-11-2020, 10:53 PM   #14
1rippen6
Senior Member
 
Join Date: May 2011
Location: Greencastle PA
Posts: 6,684
Re: Blazer and Jimmy Fuel Neck Styles

Keeps getting better and better!!! Now, if you could do this with the whole blazer you would have something.
1rippen6 is offline   Reply With Quote
Old 08-18-2020, 01:11 PM   #15
harrisoncole4
Registered User
 
harrisoncole4's Avatar
 
Join Date: Sep 2015
Location: St.Thomas, ON
Posts: 320
Re: Blazer and Jimmy Fuel Neck Styles

I believe the fuel filler neck and gas tank were the last pieces i took off during dissasembly. By that point i was so irritated with rusted out screws and bolts that i dont think i took the time to properly survey the peices i was removing.

Thanks for another great writeup on the year differences.
__________________
1969 K5 Blazer - 507 Light Blue - http://67-72chevytrucks.com/vboard/s...d.php?t=802858
harrisoncole4 is offline   Reply With Quote
Old 08-27-2020, 04:32 PM   #16
richard2717
Equal opportunity joke ofender
 
richard2717's Avatar
 
Join Date: Oct 2011
Location: Eastern Shore of MD
Posts: 9,863
Re: Blazer and Jimmy Fuel Neck Styles

Apparently the 72 fuel neck is available aftermarket now as well (not mine)

https://www.ebay.com/itm/1969-1970-1...cAAOSwuSxfMwAk

.
__________________
Members I have met.
Dually Jams, OlBlue60, ScottH, Tommyboy24, Dujobo, Warbucket, 2003 Silverado, Notsolo, my90k5, 6t727t2, Special-K ,Jack_71C10, tabarcus,72blazer_mud_bogger,pwdcougar,RSavage,EricSean,1Rippen6,invicta455,tennaragtop71,arks, Kendal,Bennett68C10, Perpendicular, Chainsawman, McGeesCustomMinis,ShortbedClayton,longblue72,6768chevylover,Tim71,Travisarmenta,Ol' Drippy,fleetmitch,georgieb51,Dave,bcnya2,Dadsburb
https://paypal.me/6772GMtruckparts
Most women like the strong, silent type… Fortunately for me, my wife prefers the out-of-shape, mouthy type.
richard2717 is offline   Reply With Quote
Old 08-28-2020, 07:54 AM   #17
DeadheadNM
Carpe manana

 
DeadheadNM's Avatar
 
Join Date: Dec 2010
Location: Eau Claire, WI
Posts: 12,261
Re: Blazer and Jimmy Fuel Neck Styles

Wow. Thanks for posting.
__________________
1972 K5 CST Highlander Blazer: http://67-72chevytrucks.com/vboard/s...d.php?t=708547
1972 K20 Cheyenne Super: http://67-72chevytrucks.com/vboard/s...d.php?t=528308

Members met: ORANGBLAZ, 2003 silverado, MikeCofield, BB72CHEVKT, Duncan&Son, Sameyrasmea72, THENEWMEXICAN, HotRod C/10, brianthelion02, Sport/Truck, ryanroo, michael bustamante, Dirt's72, Already Gone, WestButteTruck, 57taskforce, Moreyel, painterljp, AASmedic, SoCoC10, Lumaestas, carbuff382, Chevyland
DeadheadNM is offline   Reply With Quote
Old 09-23-2020, 09:08 PM   #18
DeadheadNM
Carpe manana

 
DeadheadNM's Avatar
 
Join Date: Dec 2010
Location: Eau Claire, WI
Posts: 12,261
Re: Blazer and Jimmy Fuel Neck Styles

Really useful photo taken by member PDXk5 that illustrates where the hose clamp goes on the splash shield and tie fastener location.
Attached Images
 
__________________
1972 K5 CST Highlander Blazer: http://67-72chevytrucks.com/vboard/s...d.php?t=708547
1972 K20 Cheyenne Super: http://67-72chevytrucks.com/vboard/s...d.php?t=528308

Members met: ORANGBLAZ, 2003 silverado, MikeCofield, BB72CHEVKT, Duncan&Son, Sameyrasmea72, THENEWMEXICAN, HotRod C/10, brianthelion02, Sport/Truck, ryanroo, michael bustamante, Dirt's72, Already Gone, WestButteTruck, 57taskforce, Moreyel, painterljp, AASmedic, SoCoC10, Lumaestas, carbuff382, Chevyland

Last edited by DeadheadNM; 09-23-2020 at 09:10 PM. Reason: Added
DeadheadNM is offline   Reply With Quote
Old 09-29-2020, 02:36 PM   #19
scf100
Registered User
 
scf100's Avatar
 
Join Date: Feb 2015
Location: Athens,Ga
Posts: 216
Re: Blazer and Jimmy Fuel Neck Styles

Great post......getting ready to put my Blazer in the shop for a complete maker over.........recently bought the new tank shown above so just bought the filler neck off ebay in link above from the TruckStop....

Thanks for the info fellas!
__________________
1970 2WD Blazer 454

1972 C-10 Extended Cab 350 SBC
scf100 is offline   Reply With Quote
Old 09-29-2020, 03:10 PM   #20
davischevy
Senior Member

 
davischevy's Avatar
 
Join Date: Sep 2008
Location: Harrison, Arkansas
Posts: 9,780
Re: Blazer and Jimmy Fuel Neck Styles

Quote:
Originally Posted by DeadheadNM View Post
Really useful photo taken by member PDXk5 that illustrates where the hose clamp goes on the splash shield and tie fastener location.
That is the came tie strap that 71 big block Chevelles use on heater/AC hose near the alternator.
Attached Images
 
__________________
other Larry


Build thread, Arkansas K10
https://67-72chevytrucks.com/vboard/...=755797&page=5





The ability to speak several languages is an asset, but the ability to keep your mouth shut in any language is priceless.
davischevy is offline   Reply With Quote
Old 09-29-2020, 03:11 PM   #21
davischevy
Senior Member

 
davischevy's Avatar
 
Join Date: Sep 2008
Location: Harrison, Arkansas
Posts: 9,780
Re: Blazer and Jimmy Fuel Neck Styles

Quote:
Originally Posted by DeadheadNM View Post
Really useful photo taken by member PDXk5 that illustrates where the hose clamp goes on the splash shield and tie fastener location.

Look at that red primer. Where was that truck assembled?
__________________
other Larry


Build thread, Arkansas K10
https://67-72chevytrucks.com/vboard/...=755797&page=5





The ability to speak several languages is an asset, but the ability to keep your mouth shut in any language is priceless.
davischevy is offline   Reply With Quote
Old 09-29-2020, 05:09 PM   #22
DeadheadNM
Carpe manana

 
DeadheadNM's Avatar
 
Join Date: Dec 2010
Location: Eau Claire, WI
Posts: 12,261
Re: Blazer and Jimmy Fuel Neck Styles

Quote:
Originally Posted by davischevy View Post
Look at that red primer. Where was that truck assembled?
That's original paint peeking through the mastic undercoating. I'll dig for more pics of Jeff's Blazer - I think it has a single wall top so should be Flint assembled.
__________________
1972 K5 CST Highlander Blazer: http://67-72chevytrucks.com/vboard/s...d.php?t=708547
1972 K20 Cheyenne Super: http://67-72chevytrucks.com/vboard/s...d.php?t=528308

Members met: ORANGBLAZ, 2003 silverado, MikeCofield, BB72CHEVKT, Duncan&Son, Sameyrasmea72, THENEWMEXICAN, HotRod C/10, brianthelion02, Sport/Truck, ryanroo, michael bustamante, Dirt's72, Already Gone, WestButteTruck, 57taskforce, Moreyel, painterljp, AASmedic, SoCoC10, Lumaestas, carbuff382, Chevyland
DeadheadNM is offline   Reply With Quote
Old 09-29-2020, 11:51 PM   #23
PDXk5
Senior Member
 
PDXk5's Avatar
 
Join Date: Aug 2012
Location: Portland, OR
Posts: 918
Re: Blazer and Jimmy Fuel Neck Styles

Quote:
Originally Posted by DeadheadNM View Post
That's original paint peeking through the mastic undercoating. I'll dig for more pics of Jeff's Blazer - I think it has a single wall top so should be Flint assembled.
Yep. Original 514 paint with an undercoating that was applied when my father-in-law bought it new in 1972. Flint assembled rig. Yes, it has its original single wall top. The hatch was in excellent shape too, until I forgot it was up and pulled out of the garage a couple of years ago. It broke the hatch handle off and jacked up the hatch. Here are a couple of photos of it from last summer. Handle has been replaced since then and hatch looks OK from 5 feet away but still needs to be restored.
Attached Images
  

Last edited by PDXk5; 09-30-2020 at 12:23 AM.
PDXk5 is offline   Reply With Quote
Old 09-30-2020, 07:22 AM   #24
DeadheadNM
Carpe manana

 
DeadheadNM's Avatar
 
Join Date: Dec 2010
Location: Eau Claire, WI
Posts: 12,261
Re: Blazer and Jimmy Fuel Neck Styles

Quote:
Originally Posted by davischevy View Post
That is the came tie strap that 71 big block Chevelles use on heater/AC hose near the alternator.
Good to know. I tried a 7” tie strap but that’s too short. I bet this one is 10” or more.

Jeff - thanks for the photos
__________________
1972 K5 CST Highlander Blazer: http://67-72chevytrucks.com/vboard/s...d.php?t=708547
1972 K20 Cheyenne Super: http://67-72chevytrucks.com/vboard/s...d.php?t=528308

Members met: ORANGBLAZ, 2003 silverado, MikeCofield, BB72CHEVKT, Duncan&Son, Sameyrasmea72, THENEWMEXICAN, HotRod C/10, brianthelion02, Sport/Truck, ryanroo, michael bustamante, Dirt's72, Already Gone, WestButteTruck, 57taskforce, Moreyel, painterljp, AASmedic, SoCoC10, Lumaestas, carbuff382, Chevyland
DeadheadNM is offline   Reply With Quote
Old 09-30-2020, 10:19 PM   #25
PDXk5
Senior Member
 
PDXk5's Avatar
 
Join Date: Aug 2012
Location: Portland, OR
Posts: 918
Re: Blazer and Jimmy Fuel Neck Styles

Quote:
Originally Posted by DeadheadNM View Post
Good to know. I tried a 7” tie strap but that’s too short. I bet this one is 10” or more.

Jeff - thanks for the photos
I love the camaraderie, enthusiasm, knowledge and thoroughness of members here. This Forum is awesome!

So, you guys piqued my interest and I did the string wrap method to trace the OEM tie to determine the length. I didn’t want to ‘unzip’ it to avoid it breaking from fatigue or what not. Anyway, I measured the tie from the tip of the ‘loose’ end to the tip of the closed loop end and got 11 inches. Hope that is of use to you guys. Is there a source for correct style OEM ties offered in different lengths?

I’m planning on replacing my original fuel tank with one of the correct repro styles from above, as well as new fuel lines. Was thinking I would/could fish the old lines out and the new lines into the metal strap and plastic tie but if the plastic tie breaks it would be good to know where I could get a correct style replacement.

I’m going to be installing a fuel skid plate I recently had powder coated under the tank after the fuel tank is installed. I’ll start a new thread for that endeavor but could use some pointers on that as I tackle that later this winter.
PDXk5 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 -4. The time now is 03:22 PM.


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