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Old 04-19-2020, 07:25 PM   #1
fourspeedwagon
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68 c10 suburban 5.3/4l60

I had a fairly long post written to introduce this project and - Flash! It disappeared. So, I’ll come back around to the longer version later..
The short is that I bought a running/driving 04 Sierra that got hit in the rear and want to use as much as I can from it to complete a swap into my suburban.

Wondering about fuel tank.
Hopefully next weekend I’ll be able to pull the bed off the Sierra and take a look at it’s tank. My 1st choice is probably to use the original tank, 2nd would be if I can fit the Sierra tank in somehow and last would be to get a new tank completely.

I’ve read how easy it is to use an external electric pump and regulator and also seen the complaints of being noisy. I know an in tank pump will last longer- but I don’t want to get hung up and sidetracked worrying about the external pump if it’s good for 50k miles or better, I’d be more than pleased.
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Last edited by fourspeedwagon; 04-20-2020 at 08:25 AM.
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Old 04-21-2020, 09:25 AM   #2
derotoreut
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Re: 68 c10 suburban 5.3/4l60

I'm using a Rick's Tank on my '70 K10 5.3/4l60e swap. Not running yet, but I like the tank set up. I ran into a couple of issues because it is 4WD leaf spring truck, but Ricks was very willing to help out. You can check it out on my build thread if you like.
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Old 04-21-2020, 11:11 AM   #3
ls1nova71
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Re: 68 c10 suburban 5.3/4l60

Quote:
Originally Posted by fourspeedwagon View Post
I’ve read how easy it is to use an external electric pump and regulator and also seen the complaints of being noisy. I know an in tank pump will last longer- but I don’t want to get hung up and sidetracked worrying about the external pump if it’s good for 50k miles or better, I’d be more than pleased.
Good luck getting 50k out of an external pump. You may get away with it if you mount the pump lower and have the fuel gravity feed into it, and not by siphoning it. Electric fuel pumps don't like to suck, they are made to push fuel. They will suck some, but its generally not the best way to go, and will shorten the life of them. Spend the money now, go with an in tank pump and only do it once.
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Old 04-21-2020, 11:23 PM   #4
72MARIO
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Re: 68 c10 suburban 5.3/4l60

I modified my tank to use the 2003 pump assembly. Washed it out with detergent and hot water then left it in the sun for a few days. I am still alive no big boom..

I would not reccomend using the dirty dingo sliders. They set the engine to high to get proper driveline angles in a lwb truck or suburban. I bought the new hooker setup to lower the engine.
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1968 Suburban numbers matching all original truck now equipped with 6.0/4L80 on Accuair
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Old 04-22-2020, 12:00 PM   #5
fourspeedwagon
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Re: 68 c10 suburban 5.3/4l60

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Originally Posted by ls1nova71 View Post
Good luck getting 50k out of an external pump
Pretty much what I was assuming.

72Mario — you used a stock 03 pump in your original 68 suburban tank?

Hoping to avoid a big dollar aftermarket tank if I can.

Thanks all for the responses
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1951 GMC 250 Open Express Pickup
1968 Suburban C10
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“People are shocked when they find out I’m not a good electrician”
Dad told me “Son, never strike a man in anger- unless you’re certain you can get away with it”
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Old 04-22-2020, 04:41 PM   #6
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Re: 68 c10 suburban 5.3/4l60

I've used Bosch 044 external pumps on a few LS swaps with good success. No failures but never got close to 50K miles. C5 FPR. Little a bit noisy on start up but going down road you can't hear it.
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Old 04-22-2020, 06:45 PM   #7
72MARIO
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Re: 68 c10 suburban 5.3/4l60

Check out my build thread. I never finished adding pitcures but the tank has worked great.
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1968 Suburban numbers matching all original truck now equipped with 6.0/4L80 on Accuair
http://67-72chevytrucks.com/vboard/s...d.php?t=625017
1967 C/20 6.0/4L80 Roofing Truck
1990 V2500 Suburban "Plow Truck"
2005 TAHOE DD
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Old 04-23-2020, 11:31 AM   #8
Twisted78SS
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Re: 68 c10 suburban 5.3/4l60

Quote:
Originally Posted by fourspeedwagon View Post
I had a fairly long post written to introduce this project and - Flash! It disappeared. So, I’ll come back around to the longer version later..
The short is that I bought a running/driving 04 Sierra that got hit in the rear and want to use as much as I can from it to complete a swap into my suburban.

Wondering about fuel tank.
Hopefully next weekend I’ll be able to pull the bed off the Sierra and take a look at it’s tank. My 1st choice is probably to use the original tank, 2nd would be if I can fit the Sierra tank in somehow and last would be to get a new tank completely.

I’ve read how easy it is to use an external electric pump and regulator and also seen the complaints of being noisy. I know an in tank pump will last longer- but I don’t want to get hung up and sidetracked worrying about the external pump if it’s good for 50k miles or better, I’d be more than pleased.

Welcome,
My 68 burb Goldmember is currently waiting on me to get her finished, but when it came to fueling I went through a similar experience. After I changed the plan and decided to go 5.3/4L80, picked up a basic Boyd Welding tank, and then got a tanks inc. drop in pump hanger assy to hold my pump . Happy to grab some pics.. (guess I should add them to my build thread..)
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Old 04-03-2021, 10:11 AM   #9
fourspeedwagon
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Re: 68 c10 suburban 5.3/4l60

As promised, my work is slow as molasses. My donor truck is pretty well disassembled and parted out. The engine and trans are all but ready to lift off the chassis.
Piling parts still. My dbw pedal mount came yesterday.

I’m slow but at least I do lousy work..
__________________
1951 GMC 250 Open Express Pickup
1968 Suburban C10
1971 C20 Olive
“People are shocked when they find out I’m not a good electrician”
Dad told me “Son, never strike a man in anger- unless you’re certain you can get away with it”
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Old 04-05-2021, 03:57 AM   #10
gmc684x4
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Re: 68 c10 suburban 5.3/4l60

I am planing using my 03 doner pump
Assembly with a 96 burbon tank
Either order the l31 assembly for it

Vett works makes a weld on ring set to use a ls1 pump assembly on a blazer tank

I will probably diy vet works pump retainer conversion ring as they want an obscene amout to ship to canada

Then the pump keeps its stock sump and a parts store on a road trip has a higher chance to have it in stock

I used to hate the idea of an in tank fuel pump over time learning to like furl injection and learning pump is much quieter and cooler running in tank
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