CK5
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5.3 swap what inline pump?
- Thread starter rhinoblzr
- Start date
Get a sender for a 87-91 Blazer, get a pump for a 92 trans am. Install said pump onto the 87-91 sender and install.
If you put the pump in the tank it is less likely to go bad. Seriously though, can you cut out the floor just above the sending unit without having nightmares afterwords? If so, cut it out and make a nice cover for it. Keep a spare pump with you if you want and change it out through the floor. That ACDelco 92 camero pump will work great.
Also, the tough part with frame mounted pumps is that they need to be below the tank and gravity fed. The pick up in the tank is above the pump so you are asking it to work harder to prime and pull fuel from the tank. Just saying, unless you have your heart set on an inline pump.....or have a more positive experience with them,...... I would go in-tank.
(or a tank with a port at the very bottom for a pickup line)
(or a tank with a port at the very bottom for a pickup line)
TreeFarm
Internet fabricator.
Buy a sending unit for that tank from a tbi model like Dorman Fuel Tank Sending Units 692-033. then buy a Walbro 255 pump part number #GCA758-2. That pump is a direct replacement unit and comes with everything to mount it to that sending unit including a wire harness adapter.
If you want to convert the pressure and return port of that sending unit to -6 use
I have all of these and documents of assembly in my build thread
If you want to convert the pressure and return port of that sending unit to -6 use
- 16mm x1.5 to -6 9894DBJERL (Tank pressure)
- 14x1.5 to -6 Russell 640820 (Tank Return)
- x2 3/8 Push lock to -6 Russell 640853 (filter pressure in/rail pressure in)
- 5/16 to -6 Russell 640863 (Filter return)
- 3/8 male to -6 Russell 640940 (filter out)
I have all of these and documents of assembly in my build thread
of all my gm trucks now and past the only time i have changed a pump was new install .heck my beater truck has been a garbage can for bad fuel from lots of old tank drain out jobs . . still going just fine.
and i used a 96 c3500 350 vortec pump on my 5.3 swap . still clips in the same way plug and play .
intank runs cooler / quieter / high pressure pump PUSH better than suck . so its why there in the tank .
and i used a 96 c3500 350 vortec pump on my 5.3 swap . still clips in the same way plug and play .
intank runs cooler / quieter / high pressure pump PUSH better than suck . so its why there in the tank .
That's the EP381, correct?
Did we ever determine the outlet size on that pump? IME the GM TPI (Camaro) pump has a different diameter fitting than the TBI one. It obviously can be made to fit, but at least on the Delco ones I have, the pump outlet is different than the sending unit pipe diameter. I would use a blanket statement saying they are all different, but with the new pumps coming from all over the world, who knows if even Delco is making them "right". Personally I'd rather use the pump with proper diameter fitting.
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Well, I already bought the pump for the camaro and sending unit for my tank. My 5.3 is a 2003 with a return. What do you guys think? Hard lines or braided soft? I can bend up tubing i already have the little benders. Just wondering which is better? treefarm thanks for all the fittings. Was going crazy looking for them.
I'm not saying the Camaro pump/truck sender won't work, that's what I'm running, so you won't have a real problem, you'll probably just notice the joining hose doesn't quite fit easy on the sender end.
Personally I like hard lines everywhere I can run them, just as GM did. Theoretically I suppose steel lines are going to cool your fuel better (the whole system is somewhat of a radiator). If you can bend lines and flare them, I think the choice would be pretty easy. AFAIK, the manufacturers went from steel and braided flex lines (with higher pressure EFI), to the hard plastic lines. There is probably a good margin of safety built into GM's choice, perhaps protecting the lines from rupturing as easy in accidents, weakening/burning through when exposed to heat, abrasion from movement, etc.
Personally I like hard lines everywhere I can run them, just as GM did. Theoretically I suppose steel lines are going to cool your fuel better (the whole system is somewhat of a radiator). If you can bend lines and flare them, I think the choice would be pretty easy. AFAIK, the manufacturers went from steel and braided flex lines (with higher pressure EFI), to the hard plastic lines. There is probably a good margin of safety built into GM's choice, perhaps protecting the lines from rupturing as easy in accidents, weakening/burning through when exposed to heat, abrasion from movement, etc.
I went with stainless CNC bent lines from inline tube, then earl's braided stuff up to the FPR and fuel rail.
Vombrown
Mountain Man
Not to steal your thread but has anyone out an electric pump in the saddle tanks?
Should be easy enough, order a sender for a TBI pick-up, 1987. Add a 92 trans am pump.
