Chevy & GMC Vans

My 89 lowrider had a aluminum rectangle tank in it using a
in line external pump,It was a walbro pump,Now don't ask me
what model # & pics etc,It was years & years ago,that vans gone
& the tank set up forgotten.
I do know it worked well,but the pump gave out in the 3rd year after installation.
IMO the stock replacement is the way to go.

i know someone used a walbro pump in an in-line setup on these vans before i think the link was posted in here somewhere
Edit: found it

unrreal wrote:ok guys i saw this topic and i just had to contribute it has been done before by ME and other guys in the s-10 forums, i haven't posted my build in this site since i already have it on the othe as site, here's a link to my build tread and go to the last page once ur there thats where the fuel pump stuff is (and pardon my pics i gotta get better ones ) http://www.astrosafari.com/viewtopic.php?f=127&t=7191

Interesting mod on the fuel pump. Went to look and found it interesting. I would have to look at it longer to understand every step he took. Any input from any one else?

I looked at the rotaryaviation fuel pump and the edelbrock pump. Those are both Walbro external pumps.

Walbro makes several different external pumps. The GSL393 should be more than enough for an EFI M/L van. I doubt you'll see problems with fuel pressure, because the orifice in the OE regulator should be big enough. The only time I have seen a performance pump overpower an OE regulator is in vehicles with little 4-cyl engines.

Concerning the ability of those pumps to suck thru a dead pump...
It may work for a while, but it'll really be stressing that external pump. Those pumps push a lot better than they pull. With a dead pump as a restriction, the pump won't last too long. Walbro hasn't done any testing to determine how much the life is shortened, but inlet restrictions are a bad thing.

Walbro makes in-tank modules for the '97-up Astros. Anything before '97 is an easy swap with an in-tank pump.

If you want to remove the in-tank pump on a pre-97, all you'll need to do is use a piece of high-pressure in-tank hose and run it to the bottom of the tank with a sock on the end. There are baffles in the tank to keep fuel near the pickup.

If you want to elimitnate the in-tank pump on a post-96, you have some work ahead of you. The pump is in a bucket. That bucket acts as the baffles.... but... there is a jet at the bottom of that bucket that helps to keep it full. If you remove that pump, you are disabling that jet. You may have to run 1/2 tank of fuel to avoid running that bucket dry. But.. if you are running a monster pump, the return line should keep the bucket full.

I'd go with a Walbro replacement pump... but I think I'm a bit partial to Walbro

I am http://apeusa.com

A fantastic strong external fuel pump by Holley (red and blue) cost about $100 I believe. This would not only be easier to swap, but far less. We just need someone to actually do it. Whomever has a pump not working at this time, I enthusiastically elect you…

HPbyStan wrote:That does look like a good option. Does anyone know what is basically wrong with the Astro / Safari system? Other rides don't eat fuel pumps like they're free.

it is from running the tank low on gas, the gas cools the pump, low fuel, overheated pump, = demise

That still doesn't explain why some people have no concept of vehicle maintenance - run it until it is almost broken and then pawn it off on some unsuspecting rube.