Walbro pump and Stock tank, can it work?

[jiggityjoe87]

Well i've recently begun an lt1 swap into my 70' suburban and I am trying to get the fuel system thought out before hand. I've had a few different ideas that have crossed my mind and i'm looking to the forum for some advice. Keep in mind that I just bought a 95' z28 so I'm going to try and reuse the camaro's fuel lines, etc.

1st idea: keep the stock tank and buy a walbro in tank fuel pump while retaining the stock suburban gas gauge sending unit while having the return line routed into the gas filler neck. My only worry is that the stock tank wasn't designed with any baffling so I wasn't sure if i can run the tank low on gas without worrying about the pump being starved and burning up prematurely

2nd idea: use the 95' camaro gas tank with the stock pump sending unit etc. My only concern with this setup is that the Camaro tank is something like 12.5 gallons and I would like to keep a decent range between fillups (long roadtrips).

3rd idea: keep the stock suburban tank and have a low pressure external electric fuel pump mounted to the frame to supply fuel to the high pressure pump downstream therefore always having a supply of fuel. The only reason this comes to mind is because the previous owner of my burb installed a cheap auto parts store special electric pump between the tank and the current small block. I want to try and avoid this route because I don't want to hear the whine of the fuel pump all the time.



well evrybody mull these over for a minute and if you have a reality check in store for me please let me know because I only want to do this fuel system once and to have it last for 100k miles.

[Longhorn Man]

have a rad shop cut your tank open, install the needed baffling, and make sure iy is clean, then go with plan 1 above

[capev86]

i second that motion.....fuel injection with a clean, factory look.....

[jiggityjoe87]

I don't have the first clue about how the baffling should look or how it should be placed in the tank. As far as the stock tank goes I think it is original to the burb. Do you guys think I should start with a new tank?

[Longhorn Man]

I usually assume people don't know how to weld on a fuel tank too. This is why I say take it to a rad shop.
You have a tank that fits like it's supposed to be there... why re-invent the wheel. Just mod the part you have and you KNOW it'll fit and the sending unit will work with the guage.

[smokekiki]

I don't know if I am to late for this,but another option is to check on Tanks Inc web site. They have a fuel pump/baffle kit that instals in the top of the tank.

[jorgensensc]

Here is yet another idea. It worked on the old fuel injection systems in British cars and corvettes. It's the swirlpot method. Basically you take a cheaper low pressure pump and put it from the tank to a small one gallon tank. That one stays filled the whole time. Then you run your good hi pressure pump from the small tank to the engine. (think small one gallon air tank) .The idea is that the low pressure pump keeps the small tank full, thereby creating no slosh or dry spots for the high pressure pump. It shouldn't have a problem keeping up with the demands of the engine. However if for some reason your regular tank runs dry, it won't ruin your expensive hi pressure pump, just the cheapy low pressure pump.
Shawn
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