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Just Installed Holley #12-914 In-Tank Pump

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Old Jun 25, 2006 | 10:19 PM
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Default Just Installed Holley #12-914 In-Tank Pump

Install went well. The application was the Wood Hauler's 2002 rcsb Silvy. Total time was probably about 4 hrs, but that was taking plenty of time and just coasting through. Anyways, here is what I had to do:

1. Remove fill hose.
2. Support tank with suitable jack.
3. Remove the 2 strap bolts and straps.
4. Lower tank about 1 1/2 to 2 feet, or all the way down.(WATCH FUEL LINES).
5. Disconnect the 4 lines (3 on pump and 1 at rear of tank).
6. Disconnect the electrical connectors.
7. Jack vehicle enough to get tank out.
8. Remove pump module assy. (Just tap the Lock Ring to unlock it).
9. Unplug the sender and pump from the bottom side of Module.
10.Remove fuel bucket from module(1 clip on each side).
11.Unplug and remove pump (hose is a PITA but it will come off).
12.The bucket will have to be modified at the bottom so the pump inlet will go through the bottom far enough to install the filter sock. (I used a dremel tool) see pic #1 below.
13.Then I had to modify the bucket so i could secure the pump. See pics 2 & 3 below.
14.Next you will have to splice the new connector onto your harness. I cut them at different lengths, heat shrinked and also slid a piece of hose over each splice to insure they couldn't touch if the heat shrink didn't hold up.
15.Now plug the new pump in, and install the hose and clamp.
16.I went ahead and routed the zip-tie through the bucket before dropping the pump in.
17.Now drop the module and pump back into the bucket, making sure to clip both clips on the bucket.
18.Insure that the pump is all the way down and secure it using a zip-tie already installed in step 16. You can also install the filter sock now.
19.Reinstall the pump assy. into tank and secure with lock ring.
20.Slide tank under truck and reconnect the 4 lines and 2 electrical connectors.
21.Reinstall tank (2 straps and filler tube).

I'm sure I may of left something out but I think that this pretty well covers the install procedure. The pics are from Ranwalk's older thread because I forgot to take pics while I had it apart. These are the pictures I used for a guide.

Pic 1


Pic 2


Pic 3
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Old Jun 26, 2006 | 07:13 PM
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It would be nice if someone added this to a "how to" section. This is something all of us return style guys will eventually have to do.
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Old Jun 26, 2006 | 08:07 PM
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Originally Posted by greentahoe
It would be nice if someone added this to a "how to" section. This is something all of us return style guys will eventually have to do.
Yeah, I just wanted to put this info out there for anyone that might be thinking about doing the swap. Don't be intimidated, it is a very straight foward install with minimal modifying, that could easily be done in 2.5~3.0 hours.
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Old Jun 26, 2006 | 08:37 PM
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Please click on 'EDIT' and copy everything in the box and make a new post 'pasting' it into the HowTo post. It would be a great addition to the thread.

Thanks for the write up, and thank you green for pointing this out.
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Old Jul 9, 2006 | 11:41 AM
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With this set up, do you have to keep it about 1/4 of a tank? My pumps going out and I want a higher flowing pump but I don't want to have to worry about the 1/4 tank issue.
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