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Modifying the New Fuel Pump for Fitment

15:19
43:16
36.2K views

At 15:19 in

Our Supercharged Monte Carlo Has Fuel Pressure Problems... We Upgrade the Pump AND Wires!

What happens here

A fitment issue is discovered: the bung port (fuel outlet) on the new pump is too long, causing the pump to hit the bottom of the shallow fuel tank, preventing proper seating. The host devises a solution to trim the plastic lip off the bung port and then carefully melts the end of the trimmed port to create a barb, ensuring a secure connection for the fuel hose. Additionally, the host decides to use worm-drive hose clamps instead of the supplied clamps, as the original ones tend to slip.

Goal: Trim the new fuel pump's bung port and secure the hose with worm-drive clamps.

Tools and materials

  • Heat Source — Melting the plastic port to create a barb
  • New Holley Fuel Pump Holley — The fuel pump being modified for proper fitment
  • Trimming Tool — Cutting the plastic lip off the bung port
  • Worm-Drive Hose Clamps — Securing the fuel hose to the modified bung port

What they say

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or laughed, cried, anything like that. So, the problem we're running into now is the lung port on the new pump is longer than the old one and the tank is not very deep. So, when we put this when we put it in here, that plastic piece is hitting the base as is that one. It was installed all the way in and it does not fit the whole end of the tank without bottoming out. And we don't even have the sock on there yet. So, what we're going to do is we're going to trim the tube to be the same height as the other pump and then put it back in and then we should be okay. So, let's find a way to cut this thing. Well, been messing with this for quite a while now. I think I finally got it figured out. I had to trim one lip off of this port like on the other side so it's shorter now so the pump could sit down farther. I had to melt the end a little bit and push it out to make a like a little barb. And I wanted to use those types of clamps cuz they're better, but they kept sliding up because they didn't have any bite. Like I tighten it and end up sliding up here. So I had to use the worm ones. And if they come apart in a couple years or whatever, it'll just be like that, I guess. Point being, just start with the Holly tank or start with a tank that uh is not this one. I guess if you're got a tank sync setup and you want to go

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