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Old 05-15-2014, 10:59 AM   #1
trkfrk
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Need help mounting stock LS1 fuel pump in my tank

Hey guys, I have been looking for awhile now and I am not able to find a way to install the factory GM fuel pump into my tank. I am trying to avoid buying a new tank and really want to stay with the GM fuel pump. With so many of us doing the conversions you would think there would be an aftermarket mounting kit you could bolt in or weld. I have already modified the tank by welding in the filler neck and installing a baffle inside. Any help would be appreciated. Here's a picture to help clarify.
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Old 05-15-2014, 11:17 AM   #2
ls1nova71
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Re: Need help mounting stock LS1 fuel pump in my tank

Something like this? Not sure it will work on an aluminum tank, but you could probably copy it and make one yourself out of aluminum. http://www.vetteworksonline.net/cata...products_id=89
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Old 05-15-2014, 11:46 AM   #3
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Re: Need help mounting stock LS1 fuel pump in my tank

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Originally Posted by ls1nova71 View Post
Something like this? Not sure it will work on an aluminum tank, but you could probably copy it and make one yourself out of aluminum. http://www.vetteworksonline.net/cata...products_id=89
That's perfect I think I'm going to try and copy it out of aluminum so I can weld it on. Thanks for your help!
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1972 C10 SWB LS1/T56 6 speed trans/4:56 posi with 5.5"-7" static drop/Boss 338 Wheels 18"x20"

My build thread: http://67-72chevytrucks.com/vboard/s...d.php?t=424609.

My first start up http://youtu.be/R899YQ1OcjU
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Old 05-15-2014, 09:19 PM   #4
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Re: Need help mounting stock LS1 fuel pump in my tank

Take a look at my build. I welded a ring to the top of the tank.

http://67-72chevytrucks.com/vboard/s...d.php?t=610252
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Old 05-16-2014, 01:12 AM   #5
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Cool Re: Need help mounting stock LS1 fuel pump in my tank

I took the rig and matted it to another tank ring and cut it out then cut a hole in the tank to remount with sheet metal screws and a good gasket. Simple no welding. It has leaked a drop since back in the early 90's when I did the TPI swap.
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Old 05-16-2014, 09:45 AM   #6
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Re: Need help mounting stock LS1 fuel pump in my tank

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Originally Posted by 69cunningham View Post
Take a look at my build. I welded a ring to the top of the tank.

http://67-72chevytrucks.com/vboard/s...d.php?t=610252
That came out really nice and looks clean! I am going to attempt to make the plates this weekend. It looks like you tapped the bottom plate with treads correct? Thanks for the help.

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I took the rig and matted it to another tank ring and cut it out then cut a hole in the tank to remount with sheet metal screws and a good gasket. Simple no welding. It has leaked a drop since back in the early 90's when I did the TPI swap.
That definitely sounds easier to do. Do you happen to have any pics? Thanks
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My build thread: http://67-72chevytrucks.com/vboard/s...d.php?t=424609.

My first start up http://youtu.be/R899YQ1OcjU
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Old 05-16-2014, 07:35 PM   #7
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Re: Need help mounting stock LS1 fuel pump in my tank

Thanks for everyone's help. I used some hole saws today. This is what I've done so far. I still need to drill and tap my threads and weld the bottom plate in the tank.
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1972 C10 SWB LS1/T56 6 speed trans/4:56 posi with 5.5"-7" static drop/Boss 338 Wheels 18"x20"

My build thread: http://67-72chevytrucks.com/vboard/s...d.php?t=424609.

My first start up http://youtu.be/R899YQ1OcjU
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Old 05-16-2014, 07:38 PM   #8
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Re: Need help mounting stock LS1 fuel pump in my tank

Pic 2
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1972 C10 SWB LS1/T56 6 speed trans/4:56 posi with 5.5"-7" static drop/Boss 338 Wheels 18"x20"

My build thread: http://67-72chevytrucks.com/vboard/s...d.php?t=424609.

My first start up http://youtu.be/R899YQ1OcjU
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Old 05-16-2014, 07:48 PM   #9
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Re: Need help mounting stock LS1 fuel pump in my tank

If you decide to make your own plates I used 1/4" aluminum plate. Cut your opening on your tank 3 1/2" so your O-ring can sit on. The bottom plate that is going to be welded to the tank hole saw ID 4" X OD 6". The top ring ID 3.50" and OD is 6".
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1972 C10 SWB LS1/T56 6 speed trans/4:56 posi with 5.5"-7" static drop/Boss 338 Wheels 18"x20"

My build thread: http://67-72chevytrucks.com/vboard/s...d.php?t=424609.

My first start up http://youtu.be/R899YQ1OcjU
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Old 05-16-2014, 09:21 PM   #10
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Re: Need help mounting stock LS1 fuel pump in my tank

These look very nice. I did mine similar. I did drill and tap the bottom ring.
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Old 05-19-2014, 08:20 PM   #11
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Re: Need help mounting stock LS1 fuel pump in my tank

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Originally Posted by 69cunningham View Post
These look very nice. I did mine similar. I did drill and tap the bottom ring.
Thanks again for the help. Everything is done
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1972 C10 SWB LS1/T56 6 speed trans/4:56 posi with 5.5"-7" static drop/Boss 338 Wheels 18"x20"

My build thread: http://67-72chevytrucks.com/vboard/s...d.php?t=424609.

My first start up http://youtu.be/R899YQ1OcjU
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Old 05-20-2014, 10:21 AM   #12
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Re: Need help mounting stock LS1 fuel pump in my tank

looks killer! that pump has a built in vent right? gotta have that vent, I learned the hard way, lol.
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Old 05-21-2014, 11:44 AM   #13
trkfrk
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Re: Need help mounting stock LS1 fuel pump in my tank

I'm not sure. I will take a look at it. Thanks for the heads up. I did find out GM discontinued the fuel lines on the actual pump. I ended up going to my local hose place and found some lines.
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1972 C10 SWB LS1/T56 6 speed trans/4:56 posi with 5.5"-7" static drop/Boss 338 Wheels 18"x20"

My build thread: http://67-72chevytrucks.com/vboard/s...d.php?t=424609.

My first start up http://youtu.be/R899YQ1OcjU
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