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Pump Comparison and Wiring Modification Plan

10:11
43:16
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At 10:11 in

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

What happens here

The existing fuel pump is compared side-by-side with the new Holley fuel pump. Visually, they appear to be of similar dimensions, which bodes well for fitment. The host then delves into the critical wiring modification. He explains that the wires from the new pump will have their existing connector cut off. Instead, ring terminals will be crimped onto the wires, allowing them to be directly bolted to the studs on the sending unit. This direct connection, combined with the larger gauge wire from the hot wire kit, minimizes electrical resistance. The host strongly advises using only marine-grade, fuel-resistant heat shrink or connectors for insulation within the tank, recalling a previous incident where gasoline dissolved standard heat shrink, causing a short circuit and leaving him stranded.

Goal: Ensure the new pump fits and prepare the wiring for installation.

Tools and materials

  • Crimping Tool — Attaching new ring terminals securely to the pump's wires
  • Marine-Grade — Insulating electrical connections inside the fuel tank
  • New Holley Fuel Pump Holley — The pump undergoing wiring modification
  • Old Fuel Pump — Comparison of size and design with the new pump
  • Ring Terminals — Creating secure connections to the sending unit studs
  • Wire Cutters — Cutting the existing electrical connector from the pump's wires

What they say

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I was concerned that the new one might not fit in there. Since it looks like the wires coming out of the pump are the same size as the wires coming out of the old pump. Um, we're just going to cut this connector off and crimp on a couple ring terminals. Use these pegs. Then we'll just run the bigger wire right to that peg. Because at least in my mind the the resistance from having a wire that's too small is acred over the distance at which it travels that makes it inadequate. You okay? Nothing. Yeah. Basically, what I'm saying is if we run the big wire all the way to the stud, having a littleer wire going to the pump is not going to be a problem because we're still going to have, you know, 14 volts at the stud instead of having 14 volts way at the front of the car and then losing it over the 18 ft of this massively long car. Are you ready? I'm ready. I'm ready. No, you ain't. Yes, I am. I was just quoting Spongebob. Where's Spongebob quote guy? We miss you. Come back. There was this guy who would comment some random quote from Spongebob on every single video. He was funny. I don't know what happened to him. Yeah, maybe we lost his interest. You can just like repeat old quotes because you were funny and you were appreciated. Yeah, you don't have to like find something new every time. We're not that picky. Just you could say the same thing. You could say the same joke 69 times in a row and it's still funny if it's a like a good joke. Yeah. You know what I mean? Yeah. Kind of like how we watch The Office every night even though we've seen it 20 times. Way more than 20 times. I want to hear a funny story. Yes. Tell me a funny story about heat shrink. Good lesson. What did you do? Did you ruin it? No, not this time. But I did on the Escalade in the early days. When you're doing stuff inside a gas tank, you got to make sure you're using the right kind of insulation. Because one time I didn't. Oh, damn. You know what I didn't think about? What? Those like black thingies that you slide over the heat shrink. Yeah. Yeah. We should use that, shouldn't we? That's exactly what I'm going to get to. I did use those. I soldered a connection on the fuel pump in the Escalade back when it had this old engine in it in like 2016. First time I ever did anything with a fuel pump in a bucket. And I covered my solder joint with that black heat shrink. I thought it was fine. It was not fine. The gasoline ate it. It made it swell and the heat shrink slid down the wires exposing the…

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