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Need some help. need to make a new fuel system for my truck

84CUCV

84CUCV

3/4 ton status
Joined
Jul 1, 2002
Posts
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Location
NJ for now
Its a 87 TBI shortbed truck that had duel tanks. Wireing is messed up and its being a real pia. so i was going to use a tank from a M1009 i have. (if i can use it) i dont see why not. I was going to run all new lines and a electric fuel pump for FI. i think i need about 9 to 14psi for tbi. not sure where to start

as always thanks for the help
 
Fixing the existing wiring is going to be a lot cheaper/easier than retrofitting a K5 tank. That is of course, if the dual tank lines are ok and the tank switching solenoid is intact.
 
tank lines are not ok, and the switching valve is not working at all. so i was going to make one
 
If you go with a K5 tank then buy a new baffled unit unless your used one came off a TBI system.

As far as new line I used stainless brake line, a small bender, and flaring tool. You can make your own custom lengths to fit. Works great and is readily available at any parts store.
 
was going to use a tank from a m1009. So i cant use it because there is no baffle? as far as line i was going to use line from jegs.
 
You can use a non baffled tank but the TBI systems run a baffle to prevent fuel starvation / sloshing and damage to the in tank pump.

If you end up using the M1009 tank make sure the return line is at least 1/4 going into the pick-up. Otherwise route the return line to your filler neck. Keep the tank no lower than 1/4 full at all times.
 
think i am going to got for a new tbi k5 tank. any advice on fuel pumps?
 
Check out www.rockauto.com

They have the best deals on tanks and also carry AC Delco pumps. There is a search feature going by year and make which does the work for you.

If you don't want to buy there you can still pull up part numbers.
 
OK thanks guys. why do you like in tank? i was thinking a inline fuel pump would be simpler to work on and i would not need to drop the tank.
 
Failure IMO is a ridiculous reason not to use a tank pump...GM pumps usually last 100K+, that's a long time.

I've heard of one instance that caused a dangerous condition, but that's it.
 
i swear by holley inlines..my girlfriend tahoe went throgh 3 from napa before we got one that lasted...has happened to a buddies of mines tahoe also...plus a intank is big $$$$..just my .02
 
I think my ebay in-tank AC Delco was $20, but the sending unit WILL add some cost, depending on where you get it.
 
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