Tanks Incorporated EFI install question

[KDSMAX]

Anybody have experience here with electronic fuel injected conversion? I’m installing a tanks Incorporated gas tank sending unit fuel pump pick up and was wondering if anybody has any experience with the install. Looking to do it once not multiple times thank you.

 

[threewood]

I converted mine almost 6 years ago. Here is the link to my thread.

Thread 'I Finally Did It.....EFI'

Dec 9, 2020

I finally gave in to the dark side. Purchased a Holley Sniper EFI for my GTX. I've been having a weird lean pop at mid-low rpm that I just cannot tune out on my Edelbrock AVS carb. Said "F' it and bought it.

I already have the Holley Sniper EFI gas tank with 255 Walbro pump and an o2 sensor installed so it should make for an easy swap. I went with the EFI 4150 550-516 unit. 800cfm and good to 650 hp. Has a built in pressure regulator and is what sold me on it.

Going to document my install as I go. I'm curious as to how my throttle and kickdown stud fit. I am assuming I'll have to tweak...

• threewood
• Replies: 326
• Forum: Fuel and Air Systems

 

[gkent]

What's the big deal, follow the instructions in the Holley manual and the instructions that came with the tank.

 

[KDSMAX]

I converted mine almost 6 years ago. Here is the link to my thread.

Thread 'I Finally Did It.....EFI'

Dec 9, 2020

I finally gave in to the dark side. Purchased a Holley Sniper EFI for my GTX. I've been having a weird lean pop at mid-low rpm that I just cannot tune out on my Edelbrock AVS carb. Said "F' it and bought it.

I already have the Holley Sniper EFI gas tank with 255 Walbro pump and an o2 sensor installed so it should make for an easy swap. I went with the EFI 4150 550-516 unit. 800cfm and good to 650 hp. Has a built in pressure regulator and is what sold me on it.

Going to document my install as I go. I'm curious as to how my throttle and kickdown stud fit. I am assuming I'll have to tweak...

• threewood
• Replies: 326
• Forum: Fuel and Air Systems

Thank you, I’ll comb through the thread.

 

[KDSMAX]

What's the big deal, follow the instructions in the Holley manual and the instructions that came with the tank.

I hope so. As we all know, everything looks straightforward on paper, kind of like those weekend car restoration shows, but in reality, it doesn’t always work out that way.

 

[gkent]

I installed a Holley Terminator last year. EFI is new territory for me. The install manual is thick but a lot of it is photos explaining various parts. There is also a lot of info you don't need for installs in other brands. After going through it a couple times I found the best thing was to either take notes of important points or highlight them. When done it fired and ran as it should have. I would say that one VERY important point is to check for fuel leaks along the whole system ... then check again. Check your throttle movement. Any initial failure will more than likely be your own fault, not the EFI system.

 

[KDSMAX]

Thank you for your input. After all the time and money I’ve put into this project with my redo’s and mistakes, I decided to go to the EFI route so I can enjoy driving it and not screwing around with the carburetor all the time. I can’t wait to get it all done and on the road.

 

[matthon]

Muscle Mopar EFI and ECU Engine

Your only online resource for EFI conversions and related systems for classic, Muscle-era Mopars. Post or find info here on choosing, installing and tuning EFI systems and components, updating your Mopar's wiring, fuel delivery and ignition systems and best-practice tips for successful...

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[INTMD8]

I shimmed the front of the tank down with rubber blocks so the lowest part of the tank is where the pump/sump is rather than the center of the tank where a stock pickup would pull from.

 

[Dennis H]

I don’t sell it, but Edelbrrock Pro Flo 4 is the only efi that replicates modern systems.
Sequential Port. Otherwise it’s an electronic carburetor. I went with Ricks Tanks El Paso. Costs more and has additional 3 gallon capacity and perfect fit. More range.

 

[69 GeeTeeX]

I installed the Holley sniper EFI conversion tank kit into my 1969 GTX, same fuel pump and sending unit. The sending unit never worked correctly with the factory fuel gauge; I had to install the meter match to get it to read correctly. I would test the sending unit with your fuel gauge to make sure it reads correctly before installing everything.

MeterMatch Fuel Gauge Interface Module

 

[beanhead]

Best advice I can give is, dry-fit/mock-up everything several times before final install.

As far as the Tanks Inc parts you showed, read the pump instructions carefully to get the proper mounting height and hose lengths (you will likely be trimming these). Make sure their wires aren't skinned anywhere (I've found that before on those.)
Look at how the pickup screen connects to the inlet of the pump; you want it to be just above the tank bottom at rest..not touching or being pushed up at all so as not to impede fuel flow. The screen *usually* hangs at kind of an angle, I shoot for about 1/8"-1/4" from the bottom of the tank to the lowest part of the screen.
On the Tanks Inc stuff the mounting holes for the pump/sender and/or gauge unit are clocked so they only install in one position. That sucks to find out after you've smeared sealer on and are trying to screw things down!

Try not to use cheap "Amazon" parts. For any of it. Spend the extra for quality fuel line/fittings/wiring and components.
With the Holley Snipers be absolutely sure you don't get any power wiring near your signal wires or near the throttle body itself. If you have to at any point, shield them with a groundable shielding. Those units where the ECU is inside the throttle body can and have caused a lot of headaches for people due to electronic interference. Hopefully you're switching to at least the standard Hyperspark ignition setup, it cuts down on noise and actually lets you control the ignition as well.

Let the fun begin!

 

[451Mopar]

The tank Holley sells is a Tanks Inc fuel tank, so they should instructions that are nearly the same.
I don't recall any issues with Mikes car when we installed the First gen Sniper EFI, but his dash was all custom, so the fuel sending unit calibration was done with the "Speed Hut" custom fuel gauge.
Wired the car so the Fuel pump wiring ran through the trunk hole / gromet for the stock fuel sending unit wiring, and the wiring was inside the car which is easy when the interior is not installed. Often the wiring will be under the car as it is quicker and easier.
Used NiCopp (nickel-copper) tube 3/8" for the fuel and return lines with the first version Sniper with the built-in bypass fuel pressure regulator. Had -6 AN fittings at the tube ends with flex lines to the Sniper TB, and I think the fuel tank fittings.