Are they like 12 point or something? I tried to find a pic, but they just look like normal nuts.

Got a pic? Now I'm just curious, lol.

 

They are normal 1/2 inch (or 13mm) nuts.
The issue is placement.
What tool would you use that fits in that space and how do you tighten them?
No wrench fits in that space. And neither does any socket that i know of. The nuts are so close to the body and right under a overlap of the EFI body.
Very hard to get to spot.

 

This guy used a swivel socket with an extension.

 

Might need low profile nuts, and a thin wall socket?

 

Yep.
I have tried all types of variations.
Low profile is a problem because the stud is too high. Can’t find any thin wall that’s thin enough.

I’ll try contacting Holley and see what exact tool they recommend. As long as it’s not snap-on I’ll get it. Snap-on makes no sense because it costs more then the EFI

 

Might need to hold the sniper up, while putting the nuts on, then set it down after nuts spun down some? Or use shorter studs?
Maybe you can use an allen head bolts instead of studs?

 

Im just using the hardware that came with the EFI.
the studs help line it up perfectly.
I can get the nuts to the bottom. I just can’t torque them properly because I can’t get a socket that fits in there.

 

How about a 1/4 drive socket? Those are thin walled, and you can get deep ones, too.

 

Pic? Sounds like shorter studs needed, as you only need that one full thread of the stud over the top of the nut, for full thread engagement.

 

Wish I knew exactly which model swivel socket

 

It's actually called a "universal joint socket adapter". Most guys just call it a swivel socket.

Here's a set of 3 in 1/4", 3/8" and 1/2".

https://www.harborfreight.com/universal-joint-socket-adapter-set-3-piece-63141.html?utm_source=google&utm_medium=cpc&utm_campaign=21901739207&campaignid=21901739207&utm_content=171677809142&adsetid=171677809142&product=63141&store=59&gad_source=1&gbraid=0AAAAADAHb4feLYVzBI7CkIJYHBcS7OJQu&gclid=Cj0KCQjwzrzABhD8ARIsANlSWNOx6b0BqvMDCPcU4bUjDsVqi9oyU6QKUn9AxeFIZ_y8QBuWg9fUE-oaAluDEALw_wcB

You need the 1/4" swivel, a 1/4 ratchet, a 4-6" extension, and a thin walled socket of the appropriate size.

 

This is the setup you need, only a little longer extension would probably help.

 

This is the setup you need, only a little longer extension would probably help.

View attachment 4312856

I honestly don’t see how that’s possible with the stud.
The socket is too short and will not get to the nut.

 

Maybe they used some sort of riser on the manifold. Which I don’t. that would explain how the studs are shorter maybe.

 

2:45 into the video, install spacer. you want this to keep heat transfer from the heated intake into the holley efi unit.

72-90 JEEP CJ CARBURETOR INSULATOR SPACER FOR 4.2L, 6-CYLINDER, 258CI w/ 2BBL CARB. REPLACES OE 3235406 MOPAR LICENSED

 

2:45 into the video, install spacer. you want this to keep heat transfer from the heated intake into the holley efi unit.

72-90 JEEP CJ CARBURETOR INSULATOR SPACER FOR 4.2L, 6-CYLINDER, 258CI w/ 2BBL CARB. REPLACES OE 3235406 MOPAR LICENSED

Ordered. Thanks!

 

Does this look more like it?

And as Fourtrail said, you should use a spacer like is shown in the video.

 

I got the spacer in today.
However, i just want to be sure i am using the right gasket for it.
Can anyone link it?

Also with this spacer i am guessing i need 2 gaskets?

Do i use this one on both sides of the spacer?

Crown Automotive J3235405 Carter Carburetor Gasket for 4.25 BBD Carb

Restoring the Carter Carburetor on your AMC 4.2L/258c.i. Inline 6 cylinder engine In a Jeep? Don't forget to swap out the gaskets for your rebuild. Backed by a 12 Month/12,000 Mile Warranty.

www.quadratec.com

 

Yep, that gasket looks correct and yes, one on each side of the spacer

 

Awesome. Thanks for the confirmation.
One more silly question.
Do you think it helps to use that copper gasket spray on these gaskets?
Or just leave em alone?

Its been a habit of mine to use the copper gasket spray on all gaskets.

 

Copper sealant would work too, but read the label, as might not play well with the colder temps at carb, or material the spacer is made with.

 

On the installation video, they say to reinstall the spacer if you have one. They should have said install a spacer. Without the spacer, the throttle linkage hits the vacuum line and will not move. Installing the spacer gets it up high enough for the linkage to work right, plus moves the throttle body up, making installation of the nuts a snap.

 

Yep that's exactly what i had to do to make it fit correctly.

 

For what it's worth? Even "normal" Holleys have that issue, lol.

I cut my 390 to fit on a 4.0 Intake. If you don't need a kick down? Eh, F- it, lol.

Not great for resale value, though. 🤣