" you CAN do it, but.. be afraid, its gonna blow.. but you can do it"

It's just as simple as putting a piece of dry ice in the tank. Make sure the opening of the tank is the high part, once you see the little smoke coming out of the tankweld your heart out

6:07 Fittings are a big decision! .. You can spend literally hundreds of dollar extra on fittings!! .. And just about nothing comes with them free!! I decided to go old fashioned 3/8" hard Aluminum fuel lines, and EFI rated Rubber hose splices (I have a bead roller for the aluminum fuel line so rubber hose and EFI rated hose clamps will be secure) .... and an IN TANK 60 PSI Fuel Pump Holley includes a ROLL of rubber fuel line with some Master kits, but personally I don't like long runs of rubber hose, just my preference. I'll need a bunch of NPT to Barbed hose fittings, but I have a drawer FULL of that stuff, I have collected over the years!) .. And I'll seal EVERY NPT fitting with Loctite 592 high temperature Thread Sealer paste. The only "newfangled" fitting I had to get was for the throttle body itself ... a pair of 6AN Female 90 degree to 3/8 hose Barb at $10 each :) This will make everything for the fuel runs, serviceable and replaceable with just screw driver! :)

I know it’s in Holley’s interest to advertise their stuff and all; but seriously huge props to them to sponsor so so so many of my favorite small-business youtube creators. It’s like together, two American-grown companies working together to keep our American gearhead community thriving. This is just too cool!

"Find something cool and fix it". Words to live by.

3:35 I've been collecting parts to put the Sniper 2 on my big P30 Chevy Van! :) I poured over filters, seeing what was best, I've actually got TWO here to return ... .. I decided to go with a Caterpillar -0750 spin on fuel filter .. They do 10 micron or smaller right out of the box, and spare filters are like $20

6:36 I went with Holley's fully adjustable 12- 879 pressure regulator. It comes with 2 springs and can precisely regulate from 4 psi, all the way up to 65 psi My thought is? I'm putting the softer spring in a box with an older Holley 4 barrel 4150 base carburetor, with the mounting studs and keeping it in the back of the van with a simple tool box ... Just incase I'm broken down somewhere?? Where there's no parts, (like rural Saskatchewan) ?? Myself, or any mechanic can carefully take off the throttle body, (for future repair) .... change a spring in the regulator, and slap the 4 barrel on, and i'm back up and running, in an emergency of ANY kind :)

Run your exhaust into the tank with the vehicle running for fifteen minutes, she’s good to go after that.

Should have talked the customer into a fuel tank relocation kit. We moved the tanks on the 76 and 79 Fords which gained us room behind the seat and made the interior smell better and ultimately safer. We were also able to carry more fuel as well.

Dude, that fitting is going to break off!!!

So Willie isn’t just a pretty face with a camera? Nope Great job guys. Lots of detailed instructions.

35:40 you got it backwards. The truck is in open loop. It’s about to go into closed loop once it warms up it closes the loop using the oxygen sensor for feedback.

just run a compression test to what the PSI is at. if your around 130 psi your prob a 8.5-1 motor, if your around 170 psi your prob a 10.5-1. I may be off of my math but it has been over 20 some odd years for me. good luck guys.

Awesome refit awesome job great video thanks Steven and Willy

plug it into a laptop and smooth the timing table out. if u don’t the stock setting goes from idle timing to 36 degrees without a smooth transition.

WHATCHADO is .. get your biggest HOLE saw.. right through that floor, and mounts for the trans , hell even through the driveshaft ,what ever is in the way.. ziptie it down goodENtight, just keep that fitting on the bottom so your hammer, I mean pack of budlight dont slam into it when ya drag racing Matt in the Baja 9000

"Find Somthin' Kool And FIX IT" Holden Bros 2023. You should put that on a T-Shirt and/or Sticker. If only knew somebody that could do that.

Hey brothers all that is needed to weld a fume filled tank is exhaust gas from a running engine piped into the tank to drown out any flammable gases

A funny side note too, for all the tree huggers out there, that might now be the most fuel-efficient big block on the road today. ...the factory probably stuck a big two barrel on it originally, making it STARVE and cause the driver to have to mash the pedal in order to get it to budge.

My grandpa used to weld on gas tanks by running his exhaust from his gas powered Lincoln into the tank and purging all the oxygen out of it.. This was in the 70s ,CO2,argon helium was very expensive and sketchy to find while carbon monoxide is plentiful.. This was in the oil fields and in his Texas shop.. I am not saying that Anyone should do it. However I have seen it done..

Sounds amazing! Everything is pretty and nice and neat!! Excellent work!!❤

I love watching you guys. You all make excellent content. Thank you!

Thanks a ton for doing this video !!! i have a 72 F250 4x4 that i want to do this to but i will probably do the 2 bbl like you did on the 1210

Top Tip, 50 years experience. Use Gasgacinch cement to glue the cork gaskets to the VC and finger paint a very thin layer of RTV I perfer Black Ultra Permatex letting it dry. This allows you to easily reuse your VC gaskets without sticking while keeping the oil where it belongs. Also the gaskets peal off like sticky notes with brake cleaner to clean up the Gasgacinch. My engines don't leak. 23:50

Great job guys. If I lived in Tx I'd have you boys do all my chit. Good stuff

Nice! Cheers from Norway :)

Clean install, definitely!! The Manifold Vacuum/KPA ,, seemed realy low not a very big camned 390. Great job on the install . Right on. By the way,, with the in cab tank, factory pickup, and a hard left turn.... It will definitely starve the EFI /factory fuel pickup,, with under half tank . Yes i own a 77f250 with a sniper and factory in cab tank. Luckily, i have a custom saddle and Rear tank with in tank fuel pumps and most importantly Holley Hydramates in both of those. All 3 tanks together equal 70 gallons of FUN!!! Very easy to plumb with ( 2 ), 6 port fuel tank switching valves. Ran by the Holley EFI Contact EFI PROS for the dual / 3 tank kit. Hooks right up to the Blue Wire on the Holley EFI.... FYI For Truck owners!! Enjoy!!

Cool video! Awesome looking truck!!!

Good job guys awesome job

Picked up the same kit for my 64 Galaxie, also with 390, so I'll be referencing this video multiple times. Great video!

11:48 .. Personally ...I;d take advantage of this event to build a new fuel tank under the trucks bed somewhere. They stopped putting the fuel tank inside, where you and he wife and kids sit, for a particular reason ...

If you don't know what the compression ratio of your engine is, simple do a compression test on all 8 cylinders, and divide that by 14.7. So if your Compression test comes up with 140 ish psi, you have a 9.5:1 compression ratio.

Now that's a real truck!

Awesome detail love it❤️

Most of those trucks came with a factory coolant temp GAUGE -- NOT an idiot light -- which you apparently left NOT connected when you relaced the sending unit with the Holley temp sensor..... You don't care if the engine overheats and seizes up.

Some fitting, somewhere on Earth, is getting broken by getting hit with a sledgehammer, right now. So, somewhere on Earth a sledgehammer is getting its wings.

Fill the gas tank up with water to displace the gas, then drain it before welding.

Killer video! Just watched it again and wanted to see if there have been any issues in the past few months now that you have time on it? I tried a Terminator X system on my Chevy this past year but ended up back with a carb after many bugs and issues. It seems like Holley has invested a bunch of time into fixing things with this new release and I’m tempted to dive back in to the EFI world.

You're gunna break that fitting bruh

I have that exact truck in f100 4x4. I love it!!

Awsome detail glad to see you guys are upping the class hope to see the cuba agin 🎉 I saw the video from Matt’s range day and you should not be afride of guns they part of our Texas history I know you guys are texans😮

I need to do this to my 1964 Ford Thunderbird with original 390 and carburetor.

if anyone is thinking about this i highly recommend using Fitechs Force fuel systems for supplying fuel to your holley efi, way easier and more bang for your buck, thats what i did with my terminator x install, beats the heck out of spending hundreds more on a regulator and bunch of expensive lines and fittings that youll order wrong and then have to reorder.

Dang it, now you make me wish I hadn't gotten rid of my F250 10 years ago.

Literally just bought a 72 Highboy today with a 390. Buying the sniper for sure

When are you guys going to collaborate with the Diesel Brothers???!!!

Great video! You have convinced me to run with this project on my 74 Chevy K10. I like how you used all AN fittings; I haven't had much luck with making the hose connectors with them. But, I like the clean look on the install of this truck. The truck sounded great too, did you ever get the follow up with the customer?

Your best bet with the fuel tank is to have it steam cleaned at a radiator shop or somewhere similar. There is an OSHA video on a Surfboard shop that used a 55 gallon drum of Acetone to make a mobile work platform. Washed with soap and water rinsed several times, and left to dry for a day or so. When they were welding on it, the wire from the Mig gun punched through, and there was an explosion. Blew him 40 feet across the shop and Killed him. It was determined that less than a tablespoon of product had remained in the crevices of the drum, and that that is what caused the explosion. I've been doing tank work for over 40 years, my Father over 60, and we have never had an incident. Tanks are steam cleaned and checked with a LEL meter before welding. Please, please, don't take a chance or the cheap way out. Do it right. Anything else is just guessing. Maybe it's ok, maybe it's not. I know there are going to be lots of comments "I've just done such and such, and I never had a problem". Until they do. Good video guys. Cheers.

Nice! 😎👍

Make sure you have good roadside insurance... you will need it. Just a matter of months for the brain quits on these. Carb will always get you home

Mine had like a 348 or something. It ran good and strong when it decided to run.

"Find something cool and fix it". Words to live by.. Sounds amazing! Everything is pretty and nice and neat!! Excellent work!!.

If you put exhaust in your tank you can weld it all day

😍

Don’t call me… lmao

8:34 Really should not hac=ve t say this .. standard procedure is to flood the tank with Arcon or whatever mig mix you have ...and LEAVE it flowing while welding!! Poor man's substitute is run an exhaust hose from someone else car into the tank.. it'll keep the O2 out .. Sometimes they'll explode, and ruin the tank (makes it "ball shaped" :)

I wish I had all those parts on my 390. I’m poor,I can’t buy it and Holley won’t give me sticker much less that kit.

Holley dont make an aluminum intake for the 390?? The factory cast iron is heavy af.

Hey... Love y'all's channel... Just one thing... Your music is way to loud! I find myself constantly turning the volume up and down throughout your videos... Don't mean to complain... Just something I think might help your production value. Lol

I would have put both filters before the pump as the pumps are very sensitive to particulate.

So I want to put a diesel motor in my 2004 Mustang. What should I do 👀 but I would like to keep it a daily driver, and what’s a good transmission to pair it with ?

$5000 in parts lol. If i want modern efi ill just drive my 3.5 Eco boost an drive my old carb,mechanical fuel pump, distributor dodge lancer on Sundays.

When I ran my sniper they advised against a dual plane intake due to air fuel mixture issues did they fix that issue if not you could get better performance by adding a spacer on the intake

That's now how I'd do it... lol

I want to know the MPG before and after the EFI.

I think the cost of this the way you have it set up is around like $2,500, is that correct? I'm not sure if it's worth it

Do the wipers and gauges and lights still work?

fill the tank with water before you weld it

Been wanting to convert my 71 highboy to EFI, but hesitate because it has dual tanks, and the return line and a switch valve that also has return capability are proving problematic.

are these guys JUST bros or twins?

What was he putting in the intake manifold port? I've been trying to figure out where to put the temp sensor for the Sniper 2. All my ports are currently being used. Can I just add a fitting like the one he's using and place two sensors in the same port? kzfaq.info/get/bejne/jbuqibiV1-C8eGg.html

Flood the fuel tank with c02 or N. Inert

How much would that cost

could you please be more steady with the camera. or maybe buy a gimble so its nice and smooth. just saying

Put the Factory Valve Covers back on and find a original Factory Air Cleaner..

Spngebobs says.....and thats the parts...2hrs......later

Dude, gotta flash it first with some water in it.

Great video but that whine in the background is really annoying. It makes the video hard to watch.

Good luck with that junk. "Self tuning" ha! ha! What a lie...