@@JovaniDanteGriego I ordered a genuine months agodidnt want to mess with a knock off in tank pump. Have you messed with any decently priced boost referenced FPR?
@@JovaniDanteGriego I did a quick search on the page this morning, I haven't checked the sloppy wiki yet. Hope all is well, thanks for the quick replies. 🙏🤙
As he pointed out the -AN fittings are anodized aluminum and normally use alu. wrenches, metric will work with some added parts. A 3/4" wrench when clean can have electrical tape glued to the inside with a dab of weatherstrip adhesive. 11/16" = 16mm, 5/8" = 15mm, 9/16" = 14mm, 1/2" = 13mm. Electrical tape, masking tape, it will all work. Anyone expecting more than 500 horse power should maybe using larger hoses or different system. Holley currently owns about 80+ company's including "Earls" fittings and many, many more. Not bad for a company who built two small cars in 1900, then asked to produce carburetors for use on airplane engines. DK, ASE Master Tech Since 78
I like to run hard line usually nikel copper alloy as an intermediate line down the frame rails and just convert it to an lines right at the tank and engine bay it's cheaper and imo easier and just a cleaner look.
Great information. I do very much the same thing, l sometimes run a return line to the fuel filler neck just to keep it simple. The last build I did I used the normal fuel line supply for return fuel and installed one of the bulkhead fittings low down in the wall of the tank one side running to the prefilter/pump and the in tank side to a 18" piece of fuel line with a 90* fitting and a small Holley Hydromat pickup. Worked like a dream and no suction problems. I also use the Corvette filter/regulator for a returnless system, it's just to easy. If you have a return style intake with the built in regulator in the line you can get a block off plug for the regulator off Ebay for like $10 to make it returnless. Easy-Peezy. Oh, and I run as much 3/8" hardline as possible, cheaper than hose.
This is awesomely some thank you! Almost no one teaches for the absolute beginner - they assume you’re starting with a lot of knowledge. For example - I still don’t understand how you tie in an engine wiring harness into the wiring already in the car. I’ll stay tuned! Thanks again! Great videos!
@@jeremyhanna3852 correct , but back in he old days there was issues with vapor lock the return helps keep the fuel cool enough not to vaporize , you can run a return less fuel system but run the possibility of vapor lock on hot days at idle or lower rpms, but yes also keeps the system from over pressurizing the system. its all good info
What’s the fuel filter you use ? It’s not talked about that much in the vid. And it’s not in the description. Thanks for making this vid so simple and easy to understand. Just bought the an fittings/adapters / fuel lines and pump. Going to try to start my ls soon.
So if I use the corvette fuel pressure regulator Oani my system is a single line how do I add the 3 lines the one to the manifold I understand and the feed but the return one is confusing could you actually set one up for display purposes thank you in advance
So if you only have one pipe on your intake you use the Corvette regulator because the return in on the regulator. If you have 2 pipes in your intake one is the return and already has a built in regulator
Hey, wondering if you’re able to clear something up for me. Are you keeping the stock fuel pump that’s in the tank in order to get fuel out to the external fuel pump kit you mention in this video? Or is this external one taking place of the fuel sending unit ? I’m sure this is an easy to answer question, I’m just not able to piece it together. And would I have to upgrade the stock fuel sending unit that’s in the tank, or is that what the in line fuel pump takes care of? Thank you in advance, great video with tons of great info
If working on an older car that doesn't have an intake pump, you can use an external pump mounted below the tank, however in most cases you'll probably want to install a bung on the bottom of the tank to gravity feed the pump. They dont suck very good, they only push. If you have a car that has an in tank pump already then I recommend figuring out a way to install a higher flowing pump in its place like a walbro gs323
Greetings from NC. 30 year shade tree mechanic, doing my first 5.3 LS/4l60 swap on a 82 Volvo 240. Any recommendations on model year from donor vehicle? Type vehicle? truck or SUV? TIA!
Hi Jovani, I was able to solve the problem, thanks to your advice. The pink wire wasn't getting voltage, the neutral switch wasn't working properly and was replaced, the speed sensor was disconnected. Thanks again
Your videos are so helpful and informative. I have a question that I hope will help others watching your videos that is - Can you install a cable throttle body on any of the 99 - 06 truck engines? Can the 03 - 06 drive by wire be converted? Any other necessary suggestions?
Hey Jovani, I have a Colorado that has a single fuel line for the fuel tank (no return line). The intake manifold for the 5.3 that I put in it is a return style system, which obviously has the two lines and doesn't match the truck that it's going into. Do you have any recommendations? My thought is that I can either drill a hole in the tank for a return line, or just find a returnless style manifold and replace the one I have. Let me know what you think. Thanks for the great video!
so with just an external fuel pump like this you probly never wanna run less than a 1/4 tank of fuel to not starve the pump under high acceleration or hard cornering?
Thank you for the video it has helped answer a lot of my questions but I just wanted to ask a few more if you don't mind my asking. I'm running a 5.3 out of a 2003 Yukon so it has the return style fuel rail. Since I'm using the return style intake that means that I don't I don't need to buy a fuel filter that also doubles as a regulator due to the return style having a built in regulator, correct? If I use that in line fuel pump that you showed in the video how would I wire it up? And this also mean that I don't need an in tank fuel pump correct? Would I still need to switch out the sending unit on my 78 G body to an efi style or would I leave it and just add another port for a vent?
Frank Valdez the return style intake is internaly regulated so no need for inline filter/regulator just your pre and post pump filters . Pump should be triggered via pcm and a relay
On the line that goes over the intake what is the part number for the little cap and is the hose barb on top or the intake to the driver side head supposed to come off? Like the entire circle thing with the straight 90 hose barb
Thanks so much bro! Exactly what I was looking for. When you tap the standard fuel tank, do you drill it? If so, any risk of explosion? Doing ls swap on my 66 impala. Thanks bud!
Hey man! There's been some new things since this video came out. For a return you can try these www.ebay.com/itm/314005491076?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=x9VBSnt5RYG&sssrc=2349624&ssuid=az6KSd1HQm6&var=&widget_ver=artemis&media=COPY If you plan on drilling the safe bet is to fill the tank full with water and then obviously drain it all out with your done. This will minimize risk of spark explosion
Also for your feed line I recommend AN 6 tube fittings. Basically cut the nipple part off of your fuel sender so it's just straight tube and put one of those on. Yours is most likely 3/8 line
My son LS swapped his 2001 Dodge Ram, and doesn't have the Dodge PCM to communicate for the fuel system. Would installing a pump like the walbro gs323 be best with a basic on/off toggle for the fuel?
You can just wire up the fuel pump according to the GM ECU, which would be having the ECU control the ground side of a relay which then would control the fuel pump
So how would i do the fuel system on a 84 cutlass gbody swap of a 5.3LS with a return style fuel rail? Is return line pressure low enough that i could use stock cutlass fuel feed line for the return line to the tank? then i just need to plumb a new braided line from tank pick up to fuel inlet? if so then i would probly need an all new pickup and fuel pump assembly to put in stock tank correct?
How important is the height of the fuel pump? I'm doing a 1961 Pontiac. The best closest place to the tank outlet is in the front of the tank with no good place to mount it accept even with the top of the tank. The tank is only about 7 inches deep. Will it pull the gas from the fuel tank ok? Or should I try to manufacture a bracket that gets the pump closer to the bottom. ? The fuel tank is about the lowest spot back there. Any lower and the pump will be dangerously low. Mounting it in the side of the from would make it with about 6 feet of fuel line that would run up over the axle. That seems to be a pretty bad option.
@@JovaniDanteGriego I'm doing the external pump. The fuel outlet from the tank sending unit is at the center and the upper rear corner of the tank. I'm just wondering if there is enough suction from the fuel pump to get it that high?
Jovani ,great info! Im putting a 5.3 with a return style intake in a Chevy c10 that I relocated the fuel tank to the rear of the truck. Can I convert it over to the Corvette style filter regulator setup? I would like to avoid running the return line all the way back to the tank. If so would I just block off the return line port and disconnect the vacuum line regulator? Thanks!
This is for a bone stock car. I recommend baffling the tank and using an in tank pump for anything more than stock. The issue with this is you will have to keep your tank more than a 1/4 full to avoid sucking air from the gas sloshing to the back. The tank I used this in had a low sump in the pan that this works for
Hey man getting stuff lined out for my first swap. I have a running driving z71 Tahoe, that I can’t get a title for. So I’m going to use it as the donor. Can I use the factory ECM wiring harness and all that? Or should I buy a like a painless wiring harness? It’s going into a 2016 Charger, so this style of fuel system would work as well, right?
Yes stock ecu and harness would be fine but you need to modify it for standalone. Many places offer that service. Lsxspecialties has great harnesses already ready to go as well. And yes just adapt the charger fuel system to the LS. probably using AN lines would be easiest
How about if I’m running a carb instead of FI at around 4-6 psi without a return? How would I setup the fuel supply? A regulator at the carb set to 4-6 psi? Is this pump to much psi to be regulated down to 4-6?
Yea if your using a carb you'll want like an Edelbrock or mr gasket inline fuel pump you can find at AutoZone that's made for carbs with an adjustable fuel regulator after the pump
Thank you for this video. I plan on swapping my truck intake manifold from my 5.3L chevelle to a corvette intake manifold, I am also running an external corvette fuel pump and filter. Do I need to run both fuel pressure regulators on the fuel rail and the regulated corvette fuel pump?
Do you mount the return/filter before or after the in line pump, before as in closer to the tank in relation to the in line pump, after as in closer to the intake in relation to the pump
Great vid. I have an LS conversion in an 86 C10 Way too much fuel pressure. The return line on the manifold is blocked off. does the 86 tank have a fitting for a return line so I can run a return less system ? I have the external pump but can't really see any return line.
Yo dude love 💘your Channel Thank you for sharing your experience with someone like me that Does not know much about this stuff I have a 1976Dodge dart swingers slant six looking forward to install a Junkyard 5.3 engine Help me with this Please your videos always Motivate me Thank you I'm going to get rid of the fuel injection I don't know much about that it's going to be running on carburetor Blow through Harley What kind of system should I use to feed it gas Please help Danny from New York thank you 😉
So if you are going carb route you will only need about 6psi which any of those external rail mounted fuel pumps at AutoZone or O'Reilly's will do. Then you will want to regulate it down depending on the carb you use
It's preferred to have a baffled tank so your pump doesn't run dry, that or putting the fuel line on the very bottom of the tank and never running it less than a 1/4 tank
Hi Jovani It's me again With another problem, I would like to see if you can help. Thanks to you I solved the VATS problem in my LS swap The engine 5.3 its running great. Now my problem its the transmission. I had it rebuilt installed but it doesn't shift. Park, neutral, reverse and drive work but I think it only runs in second and it would not shift. I think it's something that I didn't connect when I worked on the harness. Amy suggestions?
This can be a wiring issue like a low vss signal or a bad vss sensor. It's the sensor in the back of the transmission. Also make sure you check the pink wire on the main plug for 12v. If that isn't it then it might be the tune wasn't set up for a 4l60 and might be configured for a 4l80
@@JovaniDanteGriego Thank you very much for your reply. It should be for the 4l60 because I am using the same PCM that came with the motor and transmission but nevertheless I will double check with the company that took out the VATS. I think it may be bad wiring because the video that I used from UA-cam to do the wiring did not mentioned the pink wire from the transmission to the fuse block, I remember everything like coils, injectors etc but I don't recall Transmission wire to the fuse block. I will start there. I didn't cut any wires I should have it there. The pink wire goes to 12 volts? to the fuse block? I will let you know the progress, thank you very much!!!!!
I have an intake from a 2002 Yukon which has 2 lines on the intake so do I just run a line to the pump and another to the return and don’t need the fuel filter with the regulator. Thanks in advance
I’m planning on doing an LS swap on a 79 trans am, would I be able to run an inline fuel pump along with the original fuel pump in the tank so I don’t have to spend 400$ on a in tank fuel pump? I’ve been trying to look this up but I can’t really find anything on it. In your video you said it sucks instead of blows so I assume you still have the cars stock fuel pump as well
Are you sure your 79 even has a pump in the tank. I bet it's on the side of the engine. So you shouldn't need to worry and can just run an inline pump. however I reccomend a genuine walbro these days. External pumps tend to not last as long as in tank pumps. So buying a genuine will prolong your life
@@JovaniDanteGriego also i just found on 1 pf ur videos u have a full link to every part w/ table of contents i was looking up have on walbro fuel pump then below it, you have a fuel sending unit, i need both or either or ?
Hi Jovani, I am doing a LS swap and I watch your video on how you set up the fuel system. I did buy one of the electric pumps options you mention. I went for the Walbro 392 and 255 LPH. I red some comments and on one of them the subscriber mentions that he used it on a 5.3 L and worked great, that's why I assumed it would work on mine which is a 5.3 L with a dual line "return". The engine starts but doesn't stay running it dies 2-3 seconds after! I tried spring engine starter fluid and it runs as long as I keep spring. Do you have any suggestions. Thanks in advance. cg
I did a 2004 v6 Silverado to v8 conversion using a 04ntahoe as donor vehicle. Kept the og fuel line system . Now the issue i have is that my truck measures fuel the oppisite ..lol have you had any issues like this?
I see that you are using the intake out of a truck, I also noticed that another video you put an LS motor in your 65 Chevelle, was that able to fit under the stock hood?
I haven't tested the hood clearance yet. The front clip is still off that car . But from the looks of it I think I'll have to shave a little bit of the plastic tabs from the intake
@@JovaniDanteGriego Will you be doing a video on the Chevelle build at any time? I am also curious if the trans mounting is a issue, no one seems to talk about that part of is. I have a 66 El Camino That I am working on. (So I at least have the car..lol) Thanks
@@bradplowman3271 yea the Chevelle's next on the list I'm gathering parts for it .I'm going to be re using the trans crossmember so we'll see how it goes
@@JovaniDanteGriego I will be watching it close, I just bought my car a few days ago, so maybe by the time you are done with yours, I will be starting mine. :) I look forward to asking you a ton of questions. :)
@@JovaniDanteGriego I just put a 5.3 with a 700r4 in a '68 C10, I used the stock trans crossmember just had to slide it back a little and redrill the mounting holes, the mount was the same. They haven't changed much on the automatics and I always try to mount the engine/trans as far back as possible so I'm always moving the trans crossmember.
Have you ever setup an LS fuel system where the vehicle ran dual tanks, would I be better off doing two fuel pump systems or can I utilize one somehow. 84 GMC C30
@@JovaniDanteGriego thanks for the quick reply. I havent found any in depth build threads on it. I'll keep digging though. Worse case I'll conjure something up custom. Great video though! Thanks!
There is a method I've seen but kind of a rig. You basically put each fuel pump in each tank on a 3 position switch. Up is one tank middle is so pumps down is the other tank
@@JovaniDanteGriego I contemplated that. Its definitely able to be done but it's not quite the stock feel of switching tanks and being able to run them. I'm pretty sure I'm going to have to run a dual pump setup and change the electronic diverter valve one that can handle 255Liters per hour and to use a relay for pump switching power. Gonna have a bit of a challenge doing it but it should work. Doing so I will probably be better off changing to the single input fuel rail so I dont have to run another diverter to each tank for the return. Whole lot to think about just to have the factory feel lol
I ordered the fuel line fittings you listed. Is the fuel line the same from the amazon link as the ebay link? Which is better I need a 20ft roll asap, just waiting on a reply
@@JovaniDanteGriego last braided I bought didnt fit my fittings and the braid kept fraying out. That why I'm asking if they both fit the fittings the same, im trying to just use the same u did. So I don't have the same issue again
@@julz9272 you should be I won't guaruntee anything since sometimes the parts links aren't the exact ones I used, different sellers etc. But like I said AN6 should work with AN6. Make sure you look up videos on AN hose assembly before you get started. A good method to geth the fittings on in putting a impact on low with a socket that fits and spinning the fitting on the hose. I have an older video of assembling some AN hoses on my channel
so the fuel line you connecting to has to be flared to use these connectors? how do i go from my fuel line sending unit on my fuel tank that just has steel lines coming off it with no flares just a smooth line to these an lines?
Jovani Dante Griego what’s a normal price for a 2005 5.3 with trans harness computer.....? It’s still in the Tahoe so I’m hoping to grab everything Thanks, jp
Ethanol based fuel (corn) E85 is 85% ethanol gasoline. It's sold as am alternative fuel and is represented by yellow pumps usually. It's higher octane rating helps avoid detonation
Fuel line time, skipped all my FB groups because I knew there was a cut and dry parts list right here. Thanks for the hard work and info!
Just a heads up use a genuine walbro 355 I'm no longer user the cheaper knock offs.
@@JovaniDanteGriego I ordered a genuine months agodidnt want to mess with a knock off in tank pump. Have you messed with any decently priced boost referenced FPR?
If you check out sloppy mechanics, I know he uses a relatively cheaper one that works great
@@JovaniDanteGriego I did a quick search on the page this morning, I haven't checked the sloppy wiki yet. Hope all is well, thanks for the quick replies. 🙏🤙
As he pointed out the -AN fittings are anodized aluminum and normally use alu. wrenches, metric will work with some added parts. A 3/4" wrench when clean can have electrical tape glued to the inside with a dab of weatherstrip adhesive. 11/16" = 16mm, 5/8" = 15mm, 9/16" = 14mm, 1/2" = 13mm. Electrical tape, masking tape, it will all work.
Anyone expecting more than 500 horse power should maybe using larger hoses or different system. Holley currently owns about 80+ company's including "Earls" fittings and many, many more. Not bad for a company who built two small cars in 1900, then asked to produce carburetors for use on airplane engines.
DK, ASE Master Tech Since 78
Good Stuff! I'm just now diving into my first LS swap and your videos are very helpful. Thank You!
you're killing it with these videos! I have an L76 that is knocking bad. thinking of fixing myself with the help of your videos.
I like to run hard line usually nikel copper alloy as an intermediate line down the frame rails and just convert it to an lines right at the tank and engine bay it's cheaper and imo easier and just a cleaner look.
Great information. I do very much the same thing, l sometimes run a return line to the fuel filler neck just to keep it simple. The last build I did I used the normal fuel line supply for return fuel and installed one of the bulkhead fittings low down in the wall of the tank one side running to the prefilter/pump and the in tank side to a 18" piece of fuel line with a 90* fitting and a small Holley Hydromat pickup. Worked like a dream and no suction problems. I also use the Corvette filter/regulator for a returnless system, it's just to easy. If you have a return style intake with the built in regulator in the line you can get a block off plug for the regulator off Ebay for like $10 to make it returnless. Easy-Peezy. Oh, and I run as much 3/8" hardline as possible, cheaper than hose.
The retutn to the fill neck idea is gold! i might try that soon!
Thank you for all the info, trying to put an lsx into a 1988 s10 hope it works
Wanting to do the same. How is your project coming along?
Have help he a lot!!!! Love the videos man keep it simple and u use real life stuff I got the same pump in my 83 and its doing great
This is awesomely some thank you! Almost no one teaches for the absolute beginner - they assume you’re starting with a lot of knowledge. For example - I still don’t understand how you tie in an engine wiring harness into the wiring already in the car. I’ll stay tuned! Thanks again! Great videos!
Thanks! I appreciate it! In the next month or so im going to be doing the Wiring video!
Jovani Dante Griego that’s awesome! And thanks for the persons reply!
Thank you for dumbing it down for me
Thanks for the info...we were able to get ours up and running!
Awesome!
@ 8:45 is this a fart or no? I’m laughing so hard good stuff I’m studying up
@@willspagnolo 😂 you're the only person to ever comment on that 😂 I have no idea of it's a fart or not but that's hilarious
Very good video doing first LS swap
Very helpful thanks. I hope in the last year you found time to clean up your shop.
Just a side note. Return line is to stop vapor lock not to avoid too much fuel that's what the regulator takes care of. Decent info on this one
Sorry I was referring to the Corvette fuel filter regular that includes the return
@@JovaniDanteGriego its all good brother keep up the hard work
Really the return line returns unused fuel even under wide open throttle you dont use all the fuel if you did there would b a lean condition
@@jeremyhanna3852 correct , but back in he old days there was issues with vapor lock the return helps keep the fuel cool enough not to vaporize , you can run a return less fuel system but run the possibility of vapor lock on hot days at idle or lower rpms, but yes also keeps the system from over pressurizing the system. its all good info
What’s the fuel filter you use ? It’s not talked about that much in the vid. And it’s not in the description. Thanks for making this vid so simple and easy to understand. Just bought the an fittings/adapters / fuel lines and pump. Going to try to start my ls soon.
So if I use the corvette fuel pressure regulator Oani my system is a single line how do I add the 3 lines the one to the manifold I understand and the feed but the return one is confusing could you actually set one up for display purposes thank you in advance
So if you only have one pipe on your intake you use the Corvette regulator because the return in on the regulator. If you have 2 pipes in your intake one is the return and already has a built in regulator
Hey, wondering if you’re able to clear something up for me. Are you keeping the stock fuel pump that’s in the tank in order to get fuel out to the external fuel pump kit you mention in this video? Or is this external one taking place of the fuel sending unit ? I’m sure this is an easy to answer question, I’m just not able to piece it together. And would I have to upgrade the stock fuel sending unit that’s in the tank, or is that what the in line fuel pump takes care of? Thank you in advance, great video with tons of great info
If working on an older car that doesn't have an intake pump, you can use an external pump mounted below the tank, however in most cases you'll probably want to install a bung on the bottom of the tank to gravity feed the pump. They dont suck very good, they only push.
If you have a car that has an in tank pump already then I recommend figuring out a way to install a higher flowing pump in its place like a walbro gs323
Greetings from NC. 30 year shade tree mechanic, doing my first 5.3 LS/4l60 swap on a 82 Volvo 240. Any recommendations on model year from donor vehicle? Type vehicle? truck or SUV? TIA!
Hi Jovani, I was able to solve the problem, thanks to your advice.
The pink wire wasn't getting voltage, the neutral switch wasn't working properly and was replaced, the speed sensor was disconnected.
Thanks again
Your videos are so helpful and informative. I have a question that I hope will help others watching your videos that is - Can you install a cable throttle body on any of the 99 - 06 truck engines? Can the 03 - 06 drive by wire be converted? Any other necessary suggestions?
They can be converted but I believe it's dependent on the ecu . The 0411 is the proper one for dbc
Hey Jovani, I have a Colorado that has a single fuel line for the fuel tank (no return line). The intake manifold for the 5.3 that I put in it is a return style system, which obviously has the two lines and doesn't match the truck that it's going into. Do you have any recommendations? My thought is that I can either drill a hole in the tank for a return line, or just find a returnless style manifold and replace the one I have. Let me know what you think. Thanks for the great video!
Have you looked at the tank? It most likely has a return. Every fuel injected vehicle is using a return I think
so with just an external fuel pump like this you probly never wanna run less than a 1/4 tank of fuel to not starve the pump under high acceleration or hard cornering?
Great information dude. Do you offer wiring services? Albuquerque local here and have a LS swap for a 78 TA. TIA!
howd that go for you?
Thank you for the video it has helped answer a lot of my questions but I just wanted to ask a few more if you don't mind my asking. I'm running a 5.3 out of a 2003 Yukon so it has the return style fuel rail.
Since I'm using the return style intake that means that I don't I don't need to buy a fuel filter that also doubles as a regulator due to the return style having a built in regulator, correct?
If I use that in line fuel pump that you showed in the video how would I wire it up? And this also mean that I don't need an in tank fuel pump correct? Would I still need to switch out the sending unit on my 78 G body to an efi style or would I leave it and just add another port for a vent?
Frank Valdez the return style intake is internaly regulated so no need for inline filter/regulator just your pre and post pump filters .
Pump should be triggered via pcm and a relay
Very nice info, thanks!
On the line that goes over the intake what is the part number for the little cap and is the hose barb on top or the intake to the driver side head supposed to come off? Like the entire circle thing with the straight 90 hose barb
Thanks so much bro! Exactly what I was looking for. When you tap the standard fuel tank, do you drill it? If so, any risk of explosion? Doing ls swap on my 66 impala. Thanks bud!
Hey man! There's been some new things since this video came out. For a return you can try these www.ebay.com/itm/314005491076?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=x9VBSnt5RYG&sssrc=2349624&ssuid=az6KSd1HQm6&var=&widget_ver=artemis&media=COPY
If you plan on drilling the safe bet is to fill the tank full with water and then obviously drain it all out with your done.
This will minimize risk of spark explosion
Also for your feed line I recommend AN 6 tube fittings. Basically cut the nipple part off of your fuel sender so it's just straight tube and put one of those on. Yours is most likely 3/8 line
Great video, help out for my build
My son LS swapped his 2001 Dodge Ram, and doesn't have the Dodge PCM to communicate for the fuel system. Would installing a pump like the walbro gs323 be best with a basic on/off toggle for the fuel?
You can just wire up the fuel pump according to the GM ECU, which would be having the ECU control the ground side of a relay which then would control the fuel pump
Are you drilling a hole in bottom of the fuel tank to hook the the line to your pump to ?
Good stuff man
So how would i do the fuel system on a 84 cutlass gbody swap of a 5.3LS with a return style fuel rail?
Is return line pressure low enough that i could use stock cutlass fuel feed line for the return line to the tank?
then i just need to plumb a new braided line from tank pick up to fuel inlet?
if so then i would probly need an all new pickup and fuel pump assembly to put in stock tank correct?
Where are you located bro . I need a couple of LS swaps done .
How important is the height of the fuel pump? I'm doing a 1961 Pontiac. The best closest place to the tank outlet is in the front of the tank with no good place to mount it accept even with the top of the tank. The tank is only about 7 inches deep. Will it pull the gas from the fuel tank ok? Or should I try to manufacture a bracket that gets the pump closer to the bottom. ? The fuel tank is about the lowest spot back there. Any lower and the pump will be dangerously low. Mounting it in the side of the from would make it with about 6 feet of fuel line that would run up over the axle. That seems to be a pretty bad option.
You want the suction part of the pump basically touching the bottom of the tank
@@JovaniDanteGriego I'm doing the external pump. The fuel outlet from the tank sending unit is at the center and the upper rear corner of the tank. I'm just wondering if there is enough suction from the fuel pump to get it that high?
@@billguthrie2218 you typically want it below the tank.
Great stuff thx
Jovani ,great info! Im putting a 5.3 with a return style intake in a Chevy c10 that I relocated the fuel tank to the rear of the truck. Can I convert it over to the Corvette style filter regulator setup? I would like to avoid running the return line all the way back to the tank. If so would I just block off the return line port and disconnect the vacuum line regulator? Thanks!
I have never tried blocking it, you may just be better off getting a aftermarket fuel rail with a single inlet
Very detailed. Thanks !
New subscriber
So, u don’t modify the factory tank or pump or sending unit at all? Just the in line pump and regulator if necessary?
This is for a bone stock car. I recommend baffling the tank and using an in tank pump for anything more than stock. The issue with this is you will have to keep your tank more than a 1/4 full to avoid sucking air from the gas sloshing to the back. The tank I used this in had a low sump in the pan that this works for
Hey man getting stuff lined out for my first swap. I have a running driving z71 Tahoe, that I can’t get a title for. So I’m going to use it as the donor. Can I use the factory ECM wiring harness and all that? Or should I buy a like a painless wiring harness?
It’s going into a 2016 Charger, so this style of fuel system would work as well, right?
Yes stock ecu and harness would be fine but you need to modify it for standalone. Many places offer that service. Lsxspecialties has great harnesses already ready to go as well. And yes just adapt the charger fuel system to the LS. probably using AN lines would be easiest
How about if I’m running a carb instead of FI at around 4-6 psi without a return? How would I setup the fuel supply? A regulator at the carb set to 4-6 psi? Is this pump to much psi to be regulated down to 4-6?
Yea if your using a carb you'll want like an Edelbrock or mr gasket inline fuel pump you can find at AutoZone that's made for carbs with an adjustable fuel regulator after the pump
Thank you for this video. I plan on swapping my truck intake manifold from my 5.3L chevelle to a corvette intake manifold, I am also running an external corvette fuel pump and filter. Do I need to run both fuel pressure regulators on the fuel rail and the regulated corvette fuel pump?
No one or the other
Jovani Dante Griego if you’re running the fuel pressure regulator on the stock rail how do you run a fuel return line?
Do you mount the return/filter before or after the in line pump, before as in closer to the tank in relation to the in line pump, after as in closer to the intake in relation to the pump
After pump, it regulates the amount of fuel coming from.pump
Great vid. I have an LS conversion in an 86 C10 Way too much fuel pressure. The return line on the manifold is blocked off. does the 86 tank have a fitting for a return line so I can run a return less system ? I have the external pump but can't really see any return line.
Im not sure on the 86, however, this can be easily remedied by installing one of these into the top of the tank to serve as a return: ebay.us/elB54A
@@JovaniDanteGriego Thanks so much that is very helpful. I don't really want to drop the tank.
Yo dude love 💘your Channel
Thank you for sharing your experience with someone like me that Does not know much about this stuff
I have a 1976Dodge dart swingers slant six looking forward to install a Junkyard 5.3 engine
Help me with this Please your videos always Motivate me Thank you
I'm going to get rid of the fuel injection I don't know much about that it's going to be running on carburetor Blow through
Harley What kind of system should I use to feed it gas
Please help Danny from New York thank you 😉
So if you are going carb route you will only need about 6psi which any of those external rail mounted fuel pumps at AutoZone or O'Reilly's will do. Then you will want to regulate it down depending on the carb you use
Thanks for the great tips doing a ls swap on my channel
Do you need a different fuel tank for an ls swap I’m new and looking to get all my info and parts before I start.
It's preferred to have a baffled tank so your pump doesn't run dry, that or putting the fuel line on the very bottom of the tank and never running it less than a 1/4 tank
Hi Jovani
It's me again
With another problem, I would like to see if you can help.
Thanks to you I solved the VATS problem in my LS swap
The engine 5.3 its running great.
Now my problem its the transmission.
I had it rebuilt installed but it doesn't shift.
Park, neutral, reverse and drive work but I think it only runs in second and it would not shift.
I think it's something that I didn't connect when I worked on the harness.
Amy suggestions?
Is it 4l60 or 80?
It's a 4L60
This can be a wiring issue like a low vss signal or a bad vss sensor. It's the sensor in the back of the transmission. Also make sure you check the pink wire on the main plug for 12v. If that isn't it then it might be the tune wasn't set up for a 4l60 and might be configured for a 4l80
@@JovaniDanteGriego
Thank you very much for your reply.
It should be for the 4l60 because I am using the same PCM that came with the motor and transmission but nevertheless I will double check with the company that took out the VATS.
I think it may be bad wiring because the video that I used from UA-cam to do the wiring did not mentioned the pink wire from the transmission to the fuse block, I remember everything like coils, injectors etc but I don't recall Transmission wire to the fuse block.
I will start there.
I didn't cut any wires I should have it there.
The pink wire goes to 12 volts? to the fuse block?
I will let you know the progress, thank you very much!!!!!
I have an intake from a 2002 Yukon which has 2 lines on the intake so do I just run a line to the pump and another to the return and don’t need the fuel filter with the regulator. Thanks in advance
That's correct
I’m planning on doing an LS swap on a 79 trans am, would I be able to run an inline fuel pump along with the original fuel pump in the tank so I don’t have to spend 400$ on a in tank fuel pump? I’ve been trying to look this up but I can’t really find anything on it. In your video you said it sucks instead of blows so I assume you still have the cars stock fuel pump as well
Are you sure your 79 even has a pump in the tank. I bet it's on the side of the engine. So you shouldn't need to worry and can just run an inline pump. however I reccomend a genuine walbro these days. External pumps tend to not last as long as in tank pumps. So buying a genuine will prolong your life
@@JovaniDanteGriego alright thank you I appreciate it!
Hey on the ls truck intake manifold is the fuel supply line usually a 3/8” or 5/16”?
Supply is 3/8 return is 5/16 im pretty sure
External fuel pump ? Mounts to the chasis ?
Yes
Ok thank you im ls swapping my 83 k5 just looking around for some type of list to go of off
@@jesseg573 if your doing a square body go check out my other videos I have a whole series on what to do
@@JovaniDanteGriego ok sounds good, thank you.
@@JovaniDanteGriego also i just found on 1 pf ur videos u have a full link to every part w/ table of contents i was looking up have on walbro fuel pump then below it, you have a fuel sending unit, i need both or either or ?
Hi Jovani,
I am doing a LS swap and I watch your video on how you set up the fuel system. I did buy one of the electric pumps options you mention. I went for the Walbro 392 and 255 LPH.
I red some comments and on one of them the subscriber mentions that he used it on a 5.3 L and worked great, that's why I assumed it would work on mine which is a 5.3 L with a dual line "return".
The engine starts but doesn't stay running it dies 2-3 seconds after!
I tried spring engine starter fluid and it runs as long as I keep spring.
Do you have any suggestions.
Thanks in advance.
cg
Hi did you flash your pcm to remove vats
@@JovaniDanteGriego
I bought it from ebay and they told me it was flash and they asked for the vin #
Do you think it maybe the computer?
Sorry for the late reply!
@@carlosgomez2323 yea it sounds a lot like VATS the vehicle anti theft software. It will crank and fire then immediately die.
@@JovaniDanteGriego
Thanks for the advice.
I will check the computer vats.
I will keep you posted.
So if you have a return style intake you do not need a external regulator the fuel rail regulates it?
Return style: no external regulator
Return less: need fuel regulator, you can use the Corvette style
Thanks a million man
I did a 2004 v6 Silverado to v8 conversion using a 04ntahoe as donor vehicle. Kept the og fuel line system . Now the issue i have is that my truck measures fuel the oppisite ..lol have you had any issues like this?
What do you mean measures the opposite?
@@JovaniDanteGriego it reads empty when the tank is full
It could be some crossed wires or the sending unit isn't grounded properly
@@JovaniDanteGriego thank you
Go !head go ahead go ahead go ahead go ahead go ahead go ahead go ahead ?????
I see that you are using the intake out of a truck, I also noticed that another video you put an LS motor in your 65 Chevelle, was that able to fit under the stock hood?
I haven't tested the hood clearance yet. The front clip is still off that car . But from the looks of it I think I'll have to shave a little bit of the plastic tabs from the intake
@@JovaniDanteGriego Will you be doing a video on the Chevelle build at any time?
I am also curious if the trans mounting is a issue, no one seems to talk about that part of is. I have a 66 El Camino That I am working on. (So I at least have the car..lol)
Thanks
@@bradplowman3271 yea the Chevelle's next on the list I'm gathering parts for it .I'm going to be re using the trans crossmember so we'll see how it goes
@@JovaniDanteGriego I will be watching it close, I just bought my car a few days ago, so maybe by the time you are done with yours, I will be starting mine. :)
I look forward to asking you a ton of questions. :)
@@JovaniDanteGriego I just put a 5.3 with a 700r4 in a '68 C10, I used the stock trans crossmember just had to slide it back a little and redrill the mounting holes, the mount was the same. They haven't changed much on the automatics and I always try to mount the engine/trans as far back as possible so I'm always moving the trans crossmember.
Have you ever setup an LS fuel system where the vehicle ran dual tanks, would I be better off doing two fuel pump systems or can I utilize one somehow. 84 GMC C30
I have not set up duel tanks. However I do believe a few people have. Just do a search for it
@@JovaniDanteGriego thanks for the quick reply. I havent found any in depth build threads on it. I'll keep digging though. Worse case I'll conjure something up custom. Great video though! Thanks!
There is a method I've seen but kind of a rig. You basically put each fuel pump in each tank on a 3 position switch. Up is one tank middle is so pumps down is the other tank
@@JovaniDanteGriego I contemplated that. Its definitely able to be done but it's not quite the stock feel of switching tanks and being able to run them. I'm pretty sure I'm going to have to run a dual pump setup and change the electronic diverter valve one that can handle 255Liters per hour and to use a relay for pump switching power. Gonna have a bit of a challenge doing it but it should work. Doing so I will probably be better off changing to the single input fuel rail so I dont have to run another diverter to each tank for the return.
Whole lot to think about just to have the factory feel lol
Should I add this external fuel pump and also upgrade my intake fuel pump?
You only need one or the either, you may be better of just adding the internal version of the pump to your tank
Jovani Dante Griego copy thanks for the knowledge. keep up LS videos Im learning 🤙🏽 hopefully one day I can swap one into my 96.ss
if im running just a cammed set up on my 5.3 would this still work?
Yea stock components should be fine
Part2 please
I ordered the fuel line fittings you listed. Is the fuel line the same from the amazon link as the ebay link? Which is better I need a 20ft roll asap, just waiting on a reply
Standard AN6 is all the same size unless you go with ptfe
@@JovaniDanteGriego last braided I bought didnt fit my fittings and the braid kept fraying out. That why I'm asking if they both fit the fittings the same, im trying to just use the same u did. So I don't have the same issue again
It should work. When ever I buy AN6 no matter where I get it from it works. It's a standard size
@@JovaniDanteGriego so you think I should be good with the 20ft ebay link you posted? I already bought the fittings you linked in the description
@@julz9272 you should be I won't guaruntee anything since sometimes the parts links aren't the exact ones I used, different sellers etc. But like I said AN6 should work with AN6. Make sure you look up videos on AN hose assembly before you get started. A good method to geth the fittings on in putting a impact on low with a socket that fits and spinning the fitting on the hose. I have an older video of assembling some AN hoses on my channel
Do you have a link for the adapter you used on the fuel rail?
Heres the 3/8 one amzn.to/2Y2eJQU
Here is the 5/16 one amzn.to/2XEQsfO
so the fuel line you connecting to has to be flared to use these connectors? how do i go from my fuel line sending unit on my fuel tank that just has steel lines coming off it with no flares just a smooth line to these an lines?
You can skip the rubber hose over and use a fuel injection clamp
Where do you get you LS motors
Facebook marketplace usually
You guys don’t use the fuel pump out of the vehicle that the engine came out of?
Almost all of them are in tank. Of course you could but I prefer externally mounted
Jovani Dante Griego what’s a normal price for a 2005 5.3 with trans harness computer.....?
It’s still in the Tahoe so I’m hoping to grab everything
Thanks, jp
@@johnpenner1318 id say anyweher between 600 and 1500 depending on milage and how bad they wanna sell it
Jovani Dante Griego 109,000 miles
Thanks for the info
If the stock pump can supply 58psi of pressure your Ok .
So the corvette filter returns from filter to tank. Correct? Thanks for the tips.
Yea it's a filter/regulator
Jovani Dante Griego thank you. Thinking about a 5.3 in a 9 passenger 56 Chevy wagon. Gas tanks are rare for these glad I found one.
For building Chinese vehicles.
What is E85?
Ethanol based fuel (corn) E85 is 85% ethanol gasoline. It's sold as am alternative fuel and is represented by yellow pumps usually. It's higher octane rating helps avoid detonation
What city are you in brother?
Santa Fe NM
@@JovaniDanteGriego I'm in Albuquerque
This video was in danger of going X rated.
Sucking.....not blowing.....
Giggity
My garage is a fucken mess like yours
When you have alot of projects it's hard to keep up!