suburban gas tank install questions - The 1947 - Present Chevrolet & GMC Truck Message Board Network

68chevycst · 05-08-2013, 12:40 AM

I have a 72 4x4 chevy suburban and I just pulled the old 45 gallon aftermarket gas tank. I installed a used factory gas tank from a 70 chevy 2x4suburban that I pulled a few years back. After installing the straps and tightening them down I still have slack in the straps and the tank is not held in place tightly. I'm puzzled and hope some one can help. Thanks. Here are a few pictures.

68chevycst · 05-08-2013, 12:45 AM

here are the pictures

vectorit · 05-08-2013, 08:23 AM

Can you show better pictures of how you have the bolts in the frame?

The J hook bolts go into holes on the outer sides of the frame rails.

Found a pic of mine just to give an idea

68chevycst · 05-08-2013, 11:28 PM

Thanks for the picture and the info. I don't have any holes on the outside of the frame. I also checked a 72 blazer frame that I have and it doesn't have holes in the side of the frame either. Both are are 4x4 frames and the suburban that I removed the donor tank from was a two wheel drive. I wonder if there is a difference? Maybe some one can tell me. Here are some pictures of the sides of the frame.

vectorit · 05-09-2013, 01:45 PM

Is it because the top of the tank is hitting the floor, or is it simply that the J bolts have run out of thread to fully suck the tank up to the base of the frame?

**Classic Heartbeat** · 05-09-2013, 03:19 PM

You are missing the spacers that go between the tank flanges and the frame. WES

05-08-2013, 12:40 AM	#1
68chevycst Registered User Join Date: Aug 2008 Location: Meridian, ID Posts: 82	suburban gas tank install questions I have a 72 4x4 chevy suburban and I just pulled the old 45 gallon aftermarket gas tank. I installed a used factory gas tank from a 70 chevy 2x4suburban that I pulled a few years back. After installing the straps and tightening them down I still have slack in the straps and the tank is not held in place tightly. I'm puzzled and hope some one can help. Thanks. Here are a few pictures. __________________ 68 Chevy CST Short Bed, 70 Chevy CST Short Bed, 70 Chevy Short Bed 4X4, 72 Chevy Cheyenne Super 4X4, 72 GMC 1/2 Ton 4x4 Sierra Grande, 72 Chevy 1/2 Ton Big Block Suburban Highlander, 72 Chevy 1/2 Ton 4x4 Suburban, 72 Chevy 1/2 Ton Cheyenne Super, 72 C50 Custom, 69 Chevy CST C30 tow truck, 71 Chevy Big Block C30

05-08-2013, 12:45 AM	#2
68chevycst Registered User Join Date: Aug 2008 Location: Meridian, ID Posts: 82	Re: suburban gas tank install questions here are the pictures Attached Images __________________ 68 Chevy CST Short Bed, 70 Chevy CST Short Bed, 70 Chevy Short Bed 4X4, 72 Chevy Cheyenne Super 4X4, 72 GMC 1/2 Ton 4x4 Sierra Grande, 72 Chevy 1/2 Ton Big Block Suburban Highlander, 72 Chevy 1/2 Ton 4x4 Suburban, 72 Chevy 1/2 Ton Cheyenne Super, 72 C50 Custom, 69 Chevy CST C30 tow truck, 71 Chevy Big Block C30

05-08-2013, 08:23 AM	#3
vectorit What? Join Date: Jun 2007 Location: Southern California Posts: 7,617	Re: suburban gas tank install questions Can you show better pictures of how you have the bolts in the frame? The J hook bolts go into holes on the outer sides of the frame rails. Found a pic of mine just to give an idea Attached Images __________________ Chris 1968 K20 Suburban 1972 K10 LWB PU Last edited by vectorit; 05-08-2013 at 08:29 AM.

05-08-2013, 11:28 PM	#4
68chevycst Registered User Join Date: Aug 2008 Location: Meridian, ID Posts: 82	Re: suburban gas tank install questions Thanks for the picture and the info. I don't have any holes on the outside of the frame. I also checked a 72 blazer frame that I have and it doesn't have holes in the side of the frame either. Both are are 4x4 frames and the suburban that I removed the donor tank from was a two wheel drive. I wonder if there is a difference? Maybe some one can tell me. Here are some pictures of the sides of the frame. Attached Images __________________ 68 Chevy CST Short Bed, 70 Chevy CST Short Bed, 70 Chevy Short Bed 4X4, 72 Chevy Cheyenne Super 4X4, 72 GMC 1/2 Ton 4x4 Sierra Grande, 72 Chevy 1/2 Ton Big Block Suburban Highlander, 72 Chevy 1/2 Ton 4x4 Suburban, 72 Chevy 1/2 Ton Cheyenne Super, 72 C50 Custom, 69 Chevy CST C30 tow truck, 71 Chevy Big Block C30

05-09-2013, 01:45 PM	#5
vectorit What? Join Date: Jun 2007 Location: Southern California Posts: 7,617	Re: suburban gas tank install questions Is it because the top of the tank is hitting the floor, or is it simply that the J bolts have run out of thread to fully suck the tank up to the base of the frame? __________________ Chris 1968 K20 Suburban 1972 K10 LWB PU

05-09-2013, 03:19 PM	#6
Classic Heartbeat Project Junkie! Fishing Poor!! Join Date: Dec 1999 Location: Olympia,Wa. 98512 Posts: 10,766	Re: suburban gas tank install questions You are missing the spacers that go between the tank flanges and the frame. WES __________________ On-line catolog Classic Heartbeat Pickup Parts WEHEPP@comcast.net Call us Toll Free (888) 338-2502 Like Us on Facebook No appointment necessary. 72 BB Chevy Custom Deluxe / Custom Camper 67 I-6 (Soon to be 5.7 LS1) Panel 68 BB Chevy Short Bed 72 6.0 LQ9 Short Bed Chevy 4X4 Olympia's fastest growing truck parts supplier. Olympia's home for Wayward Chevys



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