tattooman43 Posted February 25, 2017 Report Share Posted February 25, 2017 54 dodge pickup..installing the 64 mustang gas tank at the rear of the truck question is should I mount it on the bottom frame rail or on top frame rail..thanks Quote Link to comment Share on other sites More sharing options...
JBNeal Posted February 25, 2017 Report Share Posted February 25, 2017 (edited) Mount it behind the seat and eliminate the fuel pump...also start a new thread on the same question but worded differently Edited February 25, 2017 by JBNeal Quote Link to comment Share on other sites More sharing options...
Los_Control Posted February 25, 2017 Report Share Posted February 25, 2017 I think behind the seat would be a lousy place for it. And if I were to put one there, I would choose a tank that would be a better fit then a mustang tank. Mounting it in the frame, I would want as much protection as can get, the higher the better. Or at least where the bottom of the frame was lower then the bottom of the tank. In my case, I am going with a flatbed and will have wood timbers running down the frame rails for the bed to sit on and clear the tires. I have all kinds of room to get the tank up higher. I dont know what kind of room you have to work with, But I would try to get it above the lower frame for protection. Quote Link to comment Share on other sites More sharing options...
lonejacklarry Posted February 25, 2017 Report Share Posted February 25, 2017 I would not mount the tank to the frame rails. All you need to do is build yourself a framework between the frame rails that the the tank likes. On a Mustang the tank flanges simply sit on the trunk pan that has a tank sized hole in it. You might incorporate the tank support into one of the cross braces or modify one of the cross braces to fit your needs. I wouldn't worry about where the bottom of the tank is unless you are going to slam the truck to the ground. As I stated in your previous thread, you will have to be creative with the filler pipe. The higher the tank is then the higher the filler pipe will need to be. Always consider fuel sender accessibility with a pickup. You will either need to drop the tank to replace the sender or have an access hole in the bed floor. I used a '55 Chevy tank in an old pickup once but those senders come with their own separate set of problems. The sender location was not top or bottom but in the front end of the tank and the filler pipe was behind the license plate above the bumper. The license plate was mounted on a spring loaded bracket from a 50's Ford as I recall. Quote Link to comment Share on other sites More sharing options...
tattooman43 Posted February 25, 2017 Author Report Share Posted February 25, 2017 38 minutes ago, lonejacklarry said: I would not mount the tank to the frame rails. All you need to do is build yourself a framework between the frame rails that the the tank likes. On a Mustang the tank flanges simply sit on the trunk pan that has a tank sized hole in it. You might incorporate the tank support into one of the cross braces or modify one of the cross braces to fit your needs. I wouldn't worry about where the bottom of the tank is unless you are going to slam the truck to the ground. As I stated in your previous thread, you will have to be creative with the filler pipe. The higher the tank is then the higher the filler pipe will need to be. Always consider fuel sender accessibility with a pickup. You will either need to drop the tank to replace the sender or have an access hole in the bed floor. I used a '55 Chevy tank in an old pickup once but those senders come with their own separate set of problems. The sender location was not top or bottom but in the front end of the tank and the filler pipe was behind the license plate above the bumper. The license plate was mounted on a spring loaded bracket from a 50's Ford as I recall. This sending unit is under the tank where I could get to it from under the truck....I am lowering the truck about 4 inches so nothing major...also making a frame to hold tank Quote Link to comment Share on other sites More sharing options...
lonejacklarry Posted February 25, 2017 Report Share Posted February 25, 2017 28 minutes ago, tattooman43 said: This sending unit is under the tank where I could get to it from under the truck.. On the bottom? I don't think I have seen anything like that. Would you have to drain the tank to change the sender? Quote Link to comment Share on other sites More sharing options...
tattooman43 Posted February 25, 2017 Author Report Share Posted February 25, 2017 4 hours ago, lonejacklarry said: On the bottom? I don't think I have seen anything like that. Would you have to drain the tank to change the sender? Yep and it had a drain plug on it too..I guess thats why alot of people are using them Quote Link to comment Share on other sites More sharing options...
59bisquik Posted February 26, 2017 Report Share Posted February 26, 2017 Just guessing here... but could you put it all the way in the back where the spare tire would go and make the license plate flip down to fill the tank? My 54 Ford has that style and it might be really similar to the Mustang tank. Quote Link to comment Share on other sites More sharing options...
tattooman43 Posted February 26, 2017 Author Report Share Posted February 26, 2017 1 hour ago, 59bisquik said: Just guessing here... but could you put it all the way in the back where the spare tire would go and make the license plate flip down to fill the tank? My 54 Ford has that style and it might be really similar to the Mustang tank. How the 65 mustang tanks are the filler tube will have to come up at the rear of the bed close to tailgate Quote Link to comment Share on other sites More sharing options...
tattooman43 Posted February 26, 2017 Author Report Share Posted February 26, 2017 I'll post pics when I get it mounted Quote Link to comment Share on other sites More sharing options...
tattooman43 Posted February 27, 2017 Author Report Share Posted February 27, 2017 Quote Link to comment Share on other sites More sharing options...
59bisquik Posted February 27, 2017 Report Share Posted February 27, 2017 That looks pretty good! If you slung it under the frame, could the fuel fill come out behind the license plate? Of course, if going for the rat look, sticking through the wood floor in the bed is perfectly acceptable too! 1 Quote Link to comment Share on other sites More sharing options...
Jj1981 Posted August 9, 2018 Report Share Posted August 9, 2018 Is there any issue with removing the rear frame crossmember to fit the tank I am going to go this route on my b2b. Quote Link to comment Share on other sites More sharing options...
Plymouthy Adams Posted August 9, 2018 Report Share Posted August 9, 2018 (edited) this gas tank is easily modified to place the tube just where you need it.....did this many years ago as this mimics the tank for the 51 Suburban even allowing factory mounting straps onto the Mustang tank...inlet pipe is identical in location and fit (angle) as the original tank..I did roll the edge a tad for exact fit.. Edited August 10, 2018 by Plymouthy Adams Quote Link to comment Share on other sites More sharing options...
MBF Posted August 12, 2018 Report Share Posted August 12, 2018 I wouldn't remove the rearmost cross member. It's behind the rear shackles for support, and it does offer some protection to the tank. 1 Quote Link to comment Share on other sites More sharing options...
Jj1981 Posted August 13, 2018 Report Share Posted August 13, 2018 how do u fit the mustang tank in the rear of the truck without removing the crossmember. Thanks Quote Link to comment Share on other sites More sharing options...
Jj1981 Posted August 13, 2018 Report Share Posted August 13, 2018 I was going to add support forward and rear of the tank once installed Quote Link to comment Share on other sites More sharing options...
Merle Coggins Posted August 13, 2018 Report Share Posted August 13, 2018 On 8/8/2018 at 10:16 PM, Jj1981 said: Is there any issue with removing the rear frame crossmember to fit the tank I am going to go this route on my b2b. 10 hours ago, Jj1981 said: I was going to add support forward and rear of the tank once installed As Mike said, the rear cross members add structural support for the spring mounts. If you move them you risk added stress points in your frame rails due to the loads on the spring attachment points. This isn't the best picture, but it's the best one I have that shows both cross members and their location at the spring mounts. Quote Link to comment Share on other sites More sharing options...
Jj1981 Posted August 13, 2018 Report Share Posted August 13, 2018 I see what y’all are saying so has anyone that is running this setup had any failures or noticed any damage from removing the crossmember to run the mustang tank setup. Just wanting feedback before I remove it and order my tank. Thanks 1 Quote Link to comment Share on other sites More sharing options...
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