ha, ironically i was just about to make this video today but it seems summit has beat me to it. one thing i will add about the advantage of electric fuel pumps is that they do a much better job of keeping the fuel cooler and thus much denser for a better burn and atomization. i also like the fact that after they are mounted to an uignition powered source, a flip switch can be ran where they can be shut off so one can drain the fuel bowls when the car is sitting over the winter. not to mention when mech pumps fail, sometimes they put gas in the oil. external electric pumps are the way to go. also i suggest always running a regulator to avoid pressure fluctuations and mounting it as close to the carb as possible due to the fact that the fuel in the line between the carb and regulator can expand from heat and build a higher pressure.
thanks for the tips and knowing which one i would like to install. i've always thought that it would not matter on where i would mount my electric fuel pump. i installed mine before on the fire wall. now i know better. this was also about 25 years ado. there were no internet to look up for help on you tube. again thank you for the tips.
I have a 78 T/A with a Pontiac 455 in it .030 over with a 850 Holley and also a 77 all original T/A with the 400 and stock quadrajet. Both of them take time to warm up and stay running if I don't keep my foot on the accelerator, granted they both sit for extended periods between driving, but wondering if going to an electric fuel pump would alleviate that challenge as it seems like getting the mechanical pump primed and consistent fuel flow would be the cause of repeated stalls when cold starting. Thanks!
Mechanical fuel pumps last much longer in my experience, are quieter, cheaper, simpler.. easy to replace should it go bad, and I know more than one person who's hit the 500hp mark and beyond on a mechanical pump...
One thing i notice often at my shop on vehicles with external electric fuel pumps is that people tend to put a traditional fuel filter on the inlet side. Unless that filter is a coarse 100 micron element, you will create a restriction to the pump which will make it run hotter and wear out faster, maybe even cause drivability problems. You don't really need this filter. there are already 2 inlet filters, the sock on the fuel pickup and a flame arrestor screen inside most fuel pumps (holley, mr gasket, etc).
You should note that ethanol in today's gasoline can weaken and destroy the diaphragms of old-style (especially NOS) mechanical fuel pumps. A modern electric pump may be more durable, I have experienced repeated failure of OEM style mechanical pumps but haven't had that problem with the electric pumps.
extremely helpful I was going crazy thinking I would be able to carb my tbi gen v 454 cus it didn't come with a mechanical fuel pump that was a huge relief thank you sooooo much :)
+Summit Racing my 84 Mustang GT shut down while driving and when I pulled over, I checked the usual, spark, fuel and air. I checked my oil and when doing so, I smelled fuel. I believe my FPR is shot, which there could be a few other issues that would cause this issue, as choke sticking open, needle and seat blew, jets are to big, even and intake leak that could suck air in and pull extra fuel from the carb, especially if the FPR is no good. I'm thinking it may be the FPR though, since the reading is off. How do I check the choke to see if its bad or if the needle and seat are shot? I'm running a Summit 650 carb and intake.
I have an 88 Cheyenne. The previous owner put a 4 barrel carb on it instead of the fuel injection. He ran the fuel line from the tank to the mechanical pump on the older used engine that he installed. The electric pump pushes fuel to the mechanical pump on the side of the block. My question is; is this ok to do or will it cause problems?
The best is install inline pump then disable internal fuel pump so no open fuel tank needed and use larger adjustable valve so correct pressure achieved
Hi 0Myles0, We apologize for the inconvenience here. We are working on an updated version of the AN fittings video. We will post the updated version here in a couple of weeks. Thank you for your patience.
Question: I have an electric fuel pump in my car. Carbureted engine with a pressure regulator, PSI is good. I'm having a problem where I'm not getting fuel up to the engine and I know that the source is somewhere back around the gas tank and the fuel pump. Last time it happened I turned the key and could here the pump running, but no fuel was getting into the fuel filter. I went under the car and loosened the hose clamp on the carburetor side of the fuel pump until it started to leak fuel then let go. I turned the key and saw the fuel filter filled with fuel and the car cranked right up. Now, sometimes it works, and sometimes it doesn't. I have no clue what is causing this problem please help.
Have a 53 Chevy 210 that I installed an electric fuel pump on years ago. Seemed to work fine but it since has quit working. I am considering putting a new mechanical pump on it. Someone had told me that the cam could be worn to the point of not being able to use a mechanical one. Can this actually happen? I have never tried putting on a new mechanical one.
Hi. How do I know how many psi and gph my engine needs? I Have a 351 windsor with a holley 650 double pumpers on it and I want to run an electrical fuel pump becaus my mechanical fuel pump is messed up...
I have a 7 psi after market fuel pump with a black holley bypass style regulator and no matter what i do it keeps pumping to 10 -11 psi of pressure to my carb, I've got 3/8 hose to and from and to return and the regulator wont adjust down. I need help
@@SummitRacing i figured it out, I unplugged my return line and put it into a jug and the fuel pressure went to normal and i was able to adjust the pressure but when i plugged it back into the return line on the frame leading back to the tank it build right back up to 10 psi. The return line on the frame is too small, so i ordered 3/8 aluminum fuel line to run back to the tank and my problem should be fix.
What about the waterman fuel pump? That's the belt driven pump they use on top fuel and funny cars. I've seen some rated as high as 3000 HP on gasoline.
if i am installing an external universal electric fuel pump on a 94 chevy astro: 1-do i need to take out the old and non working pump from the tank or can it work like this 2-if the line is broken from the filter because it is very old how do i cut the line to replace the filter, since i see fuel dripping from the side of the line coming from the tank 3-does it matter if i relocate the filter, closer to the engine ? thank you for your help
+ralph whitaker, Yes, for best performance you really should remove the old in tank pump. Otherwise it will act as a restriction to the frame rail mounted pump and shorten its life as well as possibly starve the motor for fuel. They are line repair parts available for you to use but, they are not exact fit for that vehicle. There will be cutting and possibly flaring involved. Give us a call and we can help you get the right parts. 1-330-630-0240.
+Summit Racing I did install it, but in order to get it start I have to spray the fuel injector with quick start, than the car will start, if I let it run and comes back in a few minute it will still start, but if sits over night it wont start unless spray with quick starts
Hi, I have a 1972 Chevy Nova with a zz4-350 crate motor it has a electric fuel pump which is turned off and on by a switch would you recommend leaving it on when the car is off or turn it off when I turn off the car too? It dosent always start first turn either..
Is there a puller electrical fuel pump. I need one for a boat where the fuel tank is very difficult to get to. The fuel pump will be approximately 8 feet from the tank.
Question I have a 1980 jeep cj7 SB AMC 304 with a Holley 2 bl carb previous owner routed the lines dangerously close to the oil pan an around the intake what electric fuel pump conversion is recommended if I block off the manual thank you
Roubraunstein90 I would recommend putting in a fuel regulator with a return line...750 CFM may be a bit much for a stock 350, so you may have to rejet the carb.
What are the symptoms of leaning out of gas? do i need to install an external electric fuel pump since i experience somewhat of a leaning out sensation at high rpms , my engine's piston is a 1.5 liter but have oversize pistons it them . What's your opinion about my query? thanks!
Hi Meowtrox, This is where a good quality gauge comes into play. Have a fuel pressure gauge and an air/fuel ratio monitor (wide band O2) mounted where they can be seen/read during wide open throttle operation. A fuel pressure gauge that drops steadily as RPM increases can be an indicator of a fuel delivery restriction or an incorrectly sized fuel pump. This would also show up as a lean condition on the air/fuel ratio monitor.
PSI itself is not speed. PSI is only the measurement of pressure. If you increase speed/velocity, you increase pressure. There are three types of pressure in a fuel system. Discharge pressure (not measured on an engine) residual pressure and static pressure. When you measure fuel pressure with an inline gauge, you’re measuring residual pressure (flow pressure). If you shut the engine off but keep the electric fuel pump running, that same inline meter would now be measuring static pressure. GPH is flow. PSI is the pressure of that flow. Speed is not flow or pressure.
I just had my 1970 Pontiac Lemans stall about 8 times on the short drive home after a morning drive with no issues, I have recently upgraded to a Holley 600 cfm carb I only had quick stalling problems on fast right hand turns before. I could pull over or shift into neutral and fire the engine back up after a couple tries so I had spark and air. The problem must be fuel. Any suggestions about how I address this issue?
I have a question on carb size. Should you take in account for the CFM loss from the air filter and or snorkle when calculating carb size? like add 100 or 200 CFM on top of your calculations?
imo (ive been a classic car mechanic/restorer for 10 years) if it is a race vehicle or a top end car with a larger cam, more compression, high stall/manual trans, lower gears, lower vehicle weight, higher volumetric efficiency, etc then yes you could stand to add 1 or 200 cfm. On the street (a vehicle opposite of the above example), adding cfm=larger bore=decreased velocity through the carb at lower rpms where you will be driving most of the time, so you would not want to add more cfm in that case. It will be running rich without comprehensive tuning. a smaller bore will have more velocity in that case which will make it run more efficiently.
Hi OneEyeJay, As an example, using a 14” air cleaner with a good K&N cotton gauze element might drop it 25 cfm on a four barrel carb. Nothing that we would worry about to have to compensate for.
Sorry but just needed to clear a point that PSI does not relate to speed of delivery as that is your flow rate. PSI is the pressure at which the flow is delivered.
I have a 83 CJ7 that doesn't get driven often. I have to turn the engine over a lot to pump the fuel to the carb for the first crank each visit. I want to install an electric inline pump to prime the first crank. Should I install the pump prior or after the mechanical fuel pump? I just want to press a spring loaded switch to prime the system after a long sit. Thanks.
I have a 84 f150 with a 302 I put a electric fuel pump in and now it won't drive a highway speeds and the bowel goes dry ...so should I switch back to the old one ???
I have a Holley Electric Fuel pump Red. And there's a IN-OUT, does that mean the hose from your fuel tank goes to the IN, and the hose from your Carburator goes to the OUT?? Fuel tank hose goes to the IN port...then the hose from the Carburator goes to the OUT? Right?
Can I fit an external electric fuel pump for my ford tdci cos Air in fuel line is causing engine stalls and the provided fuel bleed pump is not effective
So I have a 74 Chevy Vega I'm doing a Chevy 350 swap on it. It has a mechanical fuel pump but the car still has the original in tank fuel pump that can't even get the fuel to the carburetor. I wanted to know if I should leave the old fuel pump there or should I take it out. If I take it out do I just run a tube to the bottom of the tank or something? I'm new to carburetors
Hi Irving Cobian, Removal of the factory in tank fuel pump is highly recommended, yes. It will end up being a restriction to any other pump starving your motor for fuel. By simply adding a hose and an in tank filter (part # ABT-TF268) you will be able to use a mechanical pump on the motor. www.summitracing.com/parts/abt-tf268/overview/
I would like to have more details about your question. If you use a mechanical pump on a gen one small block engine swapped into a newer truck with an electric pump either in the tank or on the fuel rail, the electric pump will restrict fuel flow to the mechanical pump and will need removing. You can keep the electric pump (in place of a mechanical pump) and reduce the pressure using a bypass regulator like Mallory MAA-29387: www.summitracing.com/parts/maa-29387
I have a question. I'm looking for an electric pump because I do not like the mechanical one right in from of my engine. I have a chevelle SBC 350 .40 with a summit 600 carburetor. My question is what electric pump I should get?
+Yamil Cruz , There are a few questions that will need to be answered when choosing your pump. Most importantly, what kind of power is the motor designed to make? Where will the pump be mounted? What type of plumbing will you use? What’s your budget? Give us a call, we can help you choose one that is just right for you. 1-330-630-0240.
i don't know what is the better install fuel pump inside the tank witch is hard to replace during pump damaged or outside the tank witch is easier but i don't know it's dangerous or no in the hot weather ? anyone have experience about this idea plz reply
You are not able to combine an electrical and mechanical pump unless they are independent of each other (separate fuel systems). You would want to use one or the other.
i got a 1978 oldsmobile cutlass supreme with a chevy 350 amd im planning in upgrading to a edelbrock fuel pump which one should i buy or should i stick with the stock one
Hi Luis Gonzalez, The original fuel system for that car is most likely only designed for power levels up to 200-250hp. That includes components such as fuel lines, fuel pump and filters. If you build a motor with more power than that, it will be a good idea to upgrade them all.
i believe mechanical fuel pumps are better than electrical because you can burn every drop from the fuel tank without damage the fuel pump.electricals will fail immediately.i wish to had on my bmw e30 mechanical fuel pump for many reasons!bmw e30 316i.
Hi. I am looking for a mechanical fuel pump (not electrical) which has a psi range of 50-70 psi. Do you guys have pumps with this range? Do you know where I can find pumps in this range?
my car has a 1300cc engine 80HP i am planing to get more hp by fitting a new fuel pump so can i use the stock pump and the after market pump by switching them when i want?
Hi vishwa fonseka, Absolutely. We have several ways that you can reach out to our customer service and technical team. You can live chat or email a representative so you do not have to call. Here is the link to live chat or e-mail: summitracing.custhelp.com/app/utils/chat
Im planning on installing a 1974 style sbc in my 94 s10 tbi and i want to keep the tbi injection. Can i use a mechanical pump with the factory tbi setup?
The TBI requires 11-13 lbs usually which is more than a mechanical can provide. The other thing you’ll run into is the intake manifold having a different bolt pattern than the 1974 vintage engine. Luckily there are some adapters on the market that will fit your tbi to an older intake. You can view these here: www.summitracing.com/search?SortBy=BestKeywordMatch&SortOrder=Ascending&keyword=tbi%20adapter Another problem you may run into is tuning. There aren’t a lot of good options with the old tbi engines. If you’re looking for good manners, the latest batch of self tuning units like the new Summit Max-EFI500 are really great. You can take a look at it here: www.summitracing.com/parts/sum-240500
Darrian Burnside, We need some additional information from you. Can you give our tech line a call? 1-330-630-0240. We look forward to your call. Thanks for watching!
Hi George, At a minimum, this will require removal and replacement of the timing cover so you can mount a fuel mechanical fuel pump, the addition of a fuel pump & eccentric, plumbing changes and removal of any electric fuel pump from in the fuel tank. Give us a call, we can help you compile your parts list. 1-330-630-0240. Thanks!
I have a 77 c10 with headers high rise intake edelbrock carb msd ignition have a regular mechanical fuel pump and at times feels like it needs gas what can it be do I need to buy a edelbrock mechanical fuel pump or do I need a electric fuel pump
Hi Chevy Chevy, Stock mechanical pumps are capable of approximately 4-7 psi but they are not designed to push a lot of volume. With the additional horsepower created from the installation of your aftermarket parts, you will need additional fuel volume. That can be provided by an aftermarket mechanical pump such as Holley or Summit, or an electric pump such as Holley, Aeromotive, Quick Fuel etc.. A mechanical pump would be the more cost effective way to go and would handle the job just fine. An electric pump will require extra fuel line and wiring that makes them a little more labor intensive to install properly.
I just had a stock 1970 F100 w 302 refreshed and the mechanic put an electric fuel pump on it. When I asked why he didn't just put a new mechanical, he said the new ones don't hold up. It seems to work fine but that godforsaken buzzzing drives me nuts. The buzzing also ocillates in cadence with my turn signals.
Hi Jeffery Pevy, Yes, you can, as long as the electric pump is mounted lower than the bottom of the tank (a good siphon), and the draw or suction tube internally goes all the way to the bottom of the tank. Keep the pump as close to the tank as possible too!
I just purchased an Edelbrock #1406 600CFM Carburetor for my 350 stock Chevy and I am switching from a Mr Gasket electric fuel pump back to mechanical. The new Precision #M16011 pump is rated to 9psi. Edelbrock say no more than 6psi at idle. What should I do? I purchased the C20 truck this way, it had the electric fuel pump mounted about 18-24 inches from the carburetor just hanging down the side of the block. It is now leaking from the outlet port, the built in brass grommet that is molded inside of the body of the pump!
Hi 707SonomaComa, Use of a fuel pressure regulator is all that is required. Take a look at this one (SUM-G3032) on the Summit Racing website. www.summitracing.com/parts/sum-g3032/overview/
Sorry its not quite that easy. but yes turbo and more fuel could do it, but making more power requires many things. Its a balance of air, fuel compression, flow , spark, and timing. Try reading up on things like porting, which helps understand flow, turbocharging and supercharging, which are a couple of the most common way to get alot of extra power, plus study some serious engine builders, such as tom nelson, and lingenfelter (spelling?. There are entertaining shows like roadkill,and you will understand some of the mechanical skills but its not the best for raw knowlege. I hope you keep seeking to find the answers to what you want and keep learning. Keep your enthusiasm and keep asking questions.
Hello i am working on a 1967 Datsun 1600 roadster,for some reason the previous owner changed from menchanical to electric but it stays running all the time is that normal and fuel keeps running out the over flow i have problems can you help?
I have a 68 Mustang, 351M with about 350 hp. I've tried several mechanical pumps & my fuel filter is always empty & the car won't start when hot. I've switched to electric fans which have helped but I'm wondering would putting an electric fuel pump back by the tank & "feeding" gas to the mechanical pump help with the shortage of fuel or should I just go straight to an electric pump? Thoughts?
@@brandonb5298 I figured that was the problem but didn't know if putting the electric fuel pump by the tank & pushing more fuel to it would remedy the problem but I think I'm going to an in-tank electric pump with a return. Thanks.
Mark Troilo I’d do that route and also try keeping any fuels lines as far away from the motor and exhaust as possible and in a way that allows airflow especially if your system consists of metal lines
I don't think what he said about a pusher vs puller pump is correct. A pump creates a force on the liquid. The force is the same, whether it's a on the block on in the tank. And I had an electric fuel mounted on the block and it worked fine.
I have a 1959 Super 88 Oldsmobile with 394 cbi V8 engine and Rochester 4 brl carb. I'm currently using the standard mechanical fuel pump but I would like to go with an electric pump...what system do you have that would fit this?
ha, ironically i was just about to make this video today but it seems summit has beat me to it. one thing i will add about the advantage of electric fuel pumps is that they do a much better job of keeping the fuel cooler and thus much denser for a better burn and atomization. i also like the fact that after they are mounted to an uignition powered source, a flip switch can be ran where they can be shut off so one can drain the fuel bowls when the car is sitting over the winter. not to mention when mech pumps fail, sometimes they put gas in the oil. external electric pumps are the way to go.
also i suggest always running a regulator to avoid pressure fluctuations and mounting it as close to the carb as possible due to the fact that the fuel in the line between the carb and regulator can expand from heat and build a higher pressure.
Hey ThunderHead289,
Thank you for your contribution to the conversation! We appreciate your support!
Make it anyway. This guy did a great job, but if I had seen you show up on my search I would've watched it.
@@tedprice7993 woah, I commented that 6 years ago apparently! How cocky I sound!
thanks for the tips and knowing which one i would like to install. i've always thought that it would not matter on where i would mount my electric fuel pump. i installed mine before on the fire wall. now i know better. this was also about 25 years ado. there were no internet to look up for help on you tube. again thank you for the tips.
I have a 78 T/A with a Pontiac 455 in it .030 over with a 850 Holley and also a 77 all original T/A with the 400 and stock quadrajet. Both of them take time to warm up and stay running if I don't keep my foot on the accelerator, granted they both sit for extended periods between driving, but wondering if going to an electric fuel pump would alleviate that challenge as it seems like getting the mechanical pump primed and consistent fuel flow would be the cause of repeated stalls when cold starting. Thanks!
Mechanical fuel pumps last much longer in my experience, are quieter, cheaper, simpler.. easy to replace should it go bad, and I know more than one person who's hit the 500hp mark and beyond on a mechanical pump...
They now make "Race" Mechanical Fuel pumps, I never really trust electric
One thing i notice often at my shop on vehicles with external electric fuel pumps is that people tend to put a traditional fuel filter on the inlet side. Unless that filter is a coarse 100 micron element, you will create a restriction to the pump which will make it run hotter and wear out faster, maybe even cause drivability problems. You don't really need this filter. there are already 2 inlet filters, the sock on the fuel pickup and a flame arrestor screen inside most fuel pumps (holley, mr gasket, etc).
You should note that ethanol in today's gasoline can weaken and destroy the diaphragms of old-style (especially NOS) mechanical fuel pumps. A modern electric pump may be more durable, I have experienced repeated failure of OEM style mechanical pumps but haven't had that problem with the electric pumps.
Got a chevt 350 with two mechanicle fuel pump failures back to back in 6 months.
great presentation, this guy knows a lot, good at speech. thanks!
+Jack Hangzhou,
Thank you for watching!
good explanation Im glad to say I was seeing all this the same way and wanted confirmation.thanks
Glad it helped. Thank you for watching!
extremely helpful I was going crazy thinking I would be able to carb my tbi gen v 454 cus it didn't come with a mechanical fuel pump that was a huge relief thank you sooooo much :)
+Jose Alejandrez ,
Thank you for watching! Please let us know if you have any questions. :)
+Summit Racing my 84 Mustang GT shut down while driving and when I pulled over, I checked the usual, spark, fuel and air. I checked my oil and when doing so, I smelled fuel. I believe my FPR is shot, which there could be a few other issues that would cause this issue, as choke sticking open, needle and seat blew, jets are to big, even and intake leak that could suck air in and pull extra fuel from the carb, especially if the FPR is no good. I'm thinking it may be the FPR though, since the reading is off. How do I check the choke to see if its bad or if the needle and seat are shot? I'm running a Summit 650 carb and intake.
I have an 88 Cheyenne. The previous owner put a 4 barrel carb on it instead of the fuel injection.
He ran the fuel line from the tank to the mechanical pump on the older used engine that he installed. The electric pump pushes fuel to the mechanical pump on the side of the block.
My question is; is this ok to do or will it cause problems?
The best is install inline pump then disable internal fuel pump so no open fuel tank needed and use larger adjustable valve so correct pressure achieved
The video for the AN fittings link is set to private.
Thanks for the rest of the information though.
Hi 0Myles0,
We apologize for the inconvenience here. We are working on an updated version of the AN fittings video. We will post the updated version here in a couple of weeks. Thank you for your patience.
Question:
I have an electric fuel pump in my car. Carbureted engine with a pressure regulator, PSI is good. I'm having a problem where I'm not getting fuel up to the engine and I know that the source is somewhere back around the gas tank and the fuel pump. Last time it happened I turned the key and could here the pump running, but no fuel was getting into the fuel filter. I went under the car and loosened the hose clamp on the carburetor side of the fuel pump until it started to leak fuel then let go. I turned the key and saw the fuel filter filled with fuel and the car cranked right up. Now, sometimes it works, and sometimes it doesn't. I have no clue what is causing this problem please help.
How much pressure would you use for say a racing application carburetor? Such a Holley with 750 cfm?
Have a 53 Chevy 210 that I installed an electric fuel pump on years ago. Seemed to work fine but it since has quit working. I am considering putting a new mechanical pump on it. Someone had told me that the cam could be worn to the point of not being able to use a mechanical one. Can this actually happen? I have never tried putting on a new mechanical one.
Awesome I learned a lot from this video great job.
+Stanley Sykes,
Thank you for watching!
Hi. How do I know how many psi and gph my engine needs? I Have a 351 windsor with a holley 650 double pumpers on it and I want to run an electrical fuel pump becaus my mechanical fuel pump is messed up...
If my mechanical pump as a return line to the tank does my regulator also need one
I have a 7 psi after market fuel pump with a black holley bypass style regulator and no matter what i do it keeps pumping to 10 -11 psi of pressure to my carb, I've got 3/8 hose to and from and to return and the regulator wont adjust down. I need help
First I would make sure the regulator is plumbed correctly. If it is, I would try a different gauge. Thanks for watching!
@@SummitRacing i figured it out, I unplugged my return line and put it into a jug and the fuel pressure went to normal and i was able to adjust the pressure but when i plugged it back into the return line on the frame leading back to the tank it build right back up to 10 psi. The return line on the frame is too small, so i ordered 3/8 aluminum fuel line to run back to the tank and my problem should be fix.
Either the return line is far too small or the regulator itself is bad.
Good stuff
What about the waterman fuel pump? That's the belt driven pump they use on top fuel and funny cars. I've seen some rated as high as 3000 HP on gasoline.
I have a 79 2.8l v6 that needs a fuel pump and tank. Do a carry them and how to be sure that the pump or tank is the issue
if i am installing an external universal electric fuel pump on a 94 chevy astro:
1-do i need to take out the old and non working pump from the tank or can it work like this
2-if the line is broken from the filter because it is very old how do i cut the line to replace the filter, since i see fuel dripping from the side of the line coming from the tank
3-does it matter if i relocate the filter, closer to the engine ?
thank you for your help
+ralph whitaker,
Yes, for best performance you really should remove the old in tank pump. Otherwise it will act as a restriction to the frame rail mounted pump and shorten its life as well as possibly starve the motor for fuel. They are line repair parts available for you to use but, they are not exact fit for that vehicle. There will be cutting and possibly flaring involved. Give us a call and we can help you get the right parts. 1-330-630-0240.
+Summit Racing I did install it, but in order to get it start I have to spray the fuel injector with quick start, than the car will start, if I let it run and comes back in a few minute it will still start, but if sits over night it wont start unless spray with quick starts
So wich one is more reliable? Oh... You forgot to mention the Indirect injection fuel pump.
Hi, I have a 1972 Chevy Nova with a zz4-350 crate motor it has a electric fuel pump which is turned off and on by a switch would you recommend leaving it on when the car is off or turn it off when I turn off the car too? It dosent always start first turn either..
+Steve Perez .
It’s always best to make sure electrical accessories are off when the car is not being used!
Great video and explantion
Thank you for watching!
Have 350 chev holly 750 dp stage 7 lunnati cam edelbrock alum heads which would be bast fuel pump for this engine
Is there a puller electrical fuel pump. I need one for a boat where the fuel tank is very difficult to get to. The fuel pump will be approximately 8 feet from the tank.
Question I have a 1980 jeep cj7 SB AMC 304 with a Holley 2 bl carb previous owner routed the lines dangerously close to the oil pan an around the intake what electric fuel pump conversion is recommended if I block off the manual thank you
How to uninstall electric fuel pump? Going back to Mechanical!
what would you suggest on a 350 tbi switching to a 750 cfm Holley, planning on leaving the electric pump
Roubraunstein90 I would recommend putting in a fuel regulator with a return line...750 CFM may be a bit much for a stock 350, so you may have to rejet the carb.
What are the symptoms of leaning out of gas? do i need to install an external electric fuel pump since i experience somewhat of a leaning out sensation at high rpms , my engine's piston is a 1.5 liter but have oversize pistons it them . What's your opinion about my query? thanks!
Hi Meowtrox,
This is where a good quality gauge comes into play. Have a fuel pressure gauge and an air/fuel ratio monitor (wide band O2) mounted where they can be seen/read during wide open throttle operation. A fuel pressure gauge that drops steadily as RPM increases can be an indicator of a fuel delivery restriction or an incorrectly sized fuel pump. This would also show up as a lean condition on the air/fuel ratio monitor.
PSI itself is not speed. PSI is only the measurement of pressure. If you increase speed/velocity, you increase pressure.
There are three types of pressure in a fuel system. Discharge pressure (not measured on an engine) residual pressure and static pressure. When you measure fuel pressure with an inline gauge, you’re measuring residual pressure (flow pressure). If you shut the engine off but keep the electric fuel pump running, that same inline meter would now be measuring static pressure.
GPH is flow. PSI is the pressure of that flow. Speed is not flow or pressure.
I just had my 1970 Pontiac Lemans stall about 8 times on the short drive home after a morning drive with no issues, I have recently upgraded to a Holley 600 cfm carb I only had quick stalling problems on fast right hand turns before. I could pull over or shift into neutral and fire the engine back up after a couple tries so I had spark and air. The problem must be fuel. Any suggestions about how I address this issue?
I am having this same issue right now on my 71 Lemans. Did you ever get yours figured out?
@@magnum6886 yes, I was using low or no octane fuel. As soon as I switched to premium the stalling stopped completely.
Awesome, well done
I have a question on carb size. Should you take in account for the CFM loss from the air filter and or snorkle when calculating carb size? like add 100 or 200 CFM on top of your calculations?
imo (ive been a classic car mechanic/restorer for 10 years) if it is a race vehicle or a top end car with a larger cam, more compression, high stall/manual trans, lower gears, lower vehicle weight, higher volumetric efficiency, etc then yes you could stand to add 1 or 200 cfm. On the street (a vehicle opposite of the above example), adding cfm=larger bore=decreased velocity through the carb at lower rpms where you will be driving most of the time, so you would not want to add more cfm in that case. It will be running rich without comprehensive tuning. a smaller bore will have more velocity in that case which will make it run more efficiently.
Alex Lancia Thank you for the info.
Hi OneEyeJay,
As an example, using a 14” air cleaner with a good K&N cotton gauze element might drop it 25 cfm on a four barrel carb. Nothing that we would worry about to have to compensate for.
Can I install an Electric Fuel Pump on a Toyota Tacoma 2006 V6 4.0 engine 4x4?
HI, I HAVE A 350 SBC WITH 3 -2 BARREL CARBURATORS.I WANT TO USE AN ELECTRIC FUEL PUMP. PLEASE RECOMMEND A PSI RATING FOR THE PUMP..
Sorry but just needed to clear a point that PSI does not relate to speed of delivery as that is your flow rate. PSI is the pressure at which the flow is delivered.
Can I use a external fuel pump from a Winnebago on a fuel injected 5.7 350?
Tnx for information
So should i upgrade my jeep wagoneer carbrator before put an electric fuel pump?
I have a 83 CJ7 that doesn't get driven often. I have to turn the engine over a lot to pump the fuel to the carb for the first crank each visit. I want to install an electric inline pump to prime the first crank. Should I install the pump prior or after the mechanical fuel pump? I just want to press a spring loaded switch to prime the system after a long sit. Thanks.
Hi John Godwin,
Can you give our tech department a call regarding this question? 1-330-630-0240. Thanks!
I have a 84 f150 with a 302 I put a electric fuel pump in and now it won't drive a highway speeds and the bowel goes dry ...so should I switch back to the old one ???
Great video... But... Would you know if an electric choke wire has a 12 volt constant power during crank and run or just run? :0
very helpful.
I have a Holley Electric Fuel pump Red. And there's a IN-OUT, does that mean the hose from your fuel tank goes to the IN, and the hose from your Carburator goes to the OUT??
Fuel tank hose goes to the IN port...then the hose from the Carburator goes to the OUT? Right?
Thanks. Idk but I think mine is working the other way around. And it's doing really good
Hi!!! For a AMC 258 6 cil is there an electric pump available?
In my 1965 Ford F100 with a 302 and c6 transmission, which fuel pump do you recommend?
if the engine is stock w/ carb, stock pump is all you need.
Can I fit an external electric fuel pump for my ford tdci cos Air in fuel line is causing engine stalls and the provided fuel bleed pump is not effective
summit, your videos are awsome!
Hi elfrankyconel47 ,
Thank you! Let us know if you have any questions or video suggestions. Thank you for watching!
Thanks for such lesson
hi, can I use my existing fuel lift pump to run rwin 2 inch su's on my tr6or do I need to change it for a electric fuel pump, thanks
So I have a 74 Chevy Vega I'm doing a Chevy 350 swap on it. It has a mechanical fuel pump but the car still has the original in tank fuel pump that can't even get the fuel to the carburetor. I wanted to know if I should leave the old fuel pump there or should I take it out. If I take it out do I just run a tube to the bottom of the tank or something? I'm new to carburetors
Hi Irving Cobian,
Removal of the factory in tank fuel pump is highly recommended, yes. It will end up being a restriction to any other pump starving your motor for fuel. By simply adding a hose and an in tank filter (part # ABT-TF268) you will be able to use a mechanical pump on the motor. www.summitracing.com/parts/abt-tf268/overview/
can hook a 1999 chevl truck fuel pump to a 1987 fuel pump on the side are the engine that have a carburetor
I would like to have more details about your question. If you use a mechanical pump on a gen one small block engine swapped into a newer truck with an electric pump either in the tank or on the fuel rail, the electric pump will restrict fuel flow to the mechanical pump and will need removing. You can keep the electric pump (in place of a mechanical pump) and reduce the pressure using a bypass regulator like Mallory MAA-29387: www.summitracing.com/parts/maa-29387
If I use a universal electric fuel pump,do I have to plug the mechanical fuel pump on my 1989. Or can I leave it open ?
i have a 1968 ford f100 engine 302 what can of electric full pump i need for?
I have a question. I'm looking for an electric pump because I do not like the mechanical one right in from of my engine. I have a chevelle SBC 350 .40 with a summit 600 carburetor. My question is what electric pump I should get?
+Yamil Cruz ,
There are a few questions that will need to be answered when choosing your pump. Most importantly, what kind of power is the motor designed to make? Where will the pump be mounted? What type of plumbing will you use? What’s your budget? Give us a call, we can help you choose one that is just right for you. 1-330-630-0240.
Hi can u advice how to convert high pressure fuel pump to electric
i have a 86 corvette . what in tank pump do i need for rochester 4 bbl 750 cc
i don't know what is the better install fuel pump inside the tank witch is hard to replace during pump damaged or outside the tank witch is easier but i don't know it's dangerous or no in the hot weather ? anyone have experience about this idea plz reply
+sharahili ahmed ,
We need some additional infotmation from you. Can you give our tech line a call? 1-330-630-0240.
Can you use an electric fuel pump and mechanical and then just put a regulator on it for the carb
You are not able to combine an electrical and mechanical pump unless they are independent of each other (separate fuel systems). You would want to use one or the other.
kindly point out , for my knowledge, principal of its working related to thermodynamics study please.
WTF?
i got a 1978 oldsmobile cutlass supreme with a chevy 350 amd im planning in upgrading to a edelbrock fuel pump which one should i buy or should i stick with the stock one
Hi Luis Gonzalez,
The original fuel system for that car is most likely only designed for power levels up to 200-250hp. That includes components such as fuel lines, fuel pump and filters. If you build a motor with more power than that, it will be a good idea to upgrade them all.
How do i reduce the pressure on a electrical feul pump flooding the carb and making the car mis
Hi John, you will need to use a regulator, but we will need to know the exact fuel pump being used to offer the correct one.
have a 1992 camaro changed the fuel pump and hooked everything up but it seems to be getting to much gas to the carb what do I do?
Add a fuel pressure regulator betweenn the pump and carb. Worked great for me on my boat
Do you think mechanical fuel pump ,can be heating when you driving for 2 hours or more?
i believe mechanical fuel pumps are better than electrical because you can burn every drop from the fuel tank without damage the fuel pump.electricals will fail immediately.i wish to had on my bmw e30 mechanical fuel pump for many reasons!bmw e30 316i.
PSI is pressure, not speed of fuel flow.
Higher the pressure, faster the speed
Lower the pressure, lower the speed
Hi. I am looking for a mechanical fuel pump (not electrical) which has a psi range of 50-70 psi. Do you guys have pumps with this range? Do you know where I can find pumps in this range?
+Zaid Sheikh ,
Sorry, we do not have a mechanical fuel pump other than a belt drive capable of that high of pressure.
my car has a 1300cc engine 80HP i am planing to get more hp by fitting a new fuel pump so can i use the stock pump and the after market pump by switching them when i want?
Hi vishwa fonseka,
Can you give our tech line a call? 1-330-630-0240. We look forward to your call. Thanks for watching!
i live over seas so a call to us will cost me alot, so is it possible to solve through mails?
Hi vishwa fonseka,
Absolutely. We have several ways that you can reach out to our customer service and technical team. You can live chat or email a representative so you do not have to call. Here is the link to live chat or e-mail:
summitracing.custhelp.com/app/utils/chat
Im planning on installing a 1974 style sbc in my 94 s10 tbi and i want to keep the tbi injection. Can i use a mechanical pump with the factory tbi setup?
The TBI requires 11-13 lbs usually which is more than a mechanical can provide. The other thing you’ll run into is the intake
manifold having a different bolt pattern than the 1974 vintage engine. Luckily there are some adapters on the market
that will fit your tbi to an older intake. You can view these here: www.summitracing.com/search?SortBy=BestKeywordMatch&SortOrder=Ascending&keyword=tbi%20adapter Another problem you may run into is tuning. There aren’t a lot of good options with the old tbi engines. If you’re looking for good manners, the latest batch of self tuning units like the new Summit Max-EFI500 are really great. You can take a look at it here: www.summitracing.com/parts/sum-240500
Summit Racing I knew about the intake I was wondering if a mechanical pump would work. Thanks
I have a 84 Pontiac Trans Am I replaced the fuel pump and when I turn the ignition is still hard to draw the fuel coming from my tank what should I do
Darrian Burnside,
We need some additional information from you. Can you give our tech line a call? 1-330-630-0240. We look forward to your call. Thanks for watching!
13406400240
can you help me install mechanical fuel pump in place of electric on 1986 ford truck
Hi George,
At a minimum, this will require removal and replacement of the timing cover so you can mount a fuel mechanical fuel pump, the addition of a fuel pump & eccentric, plumbing changes and removal of any electric fuel pump from in the fuel tank. Give us a call, we can help you compile your parts list. 1-330-630-0240. Thanks!
good explanation mate, i have a leyland 4.4ltr v8 in a boat with a 600 holley carburetor, what size fuel pump would be perfect for this
Hi Jarrad,
This would depend upon the power output of the motor. Give us a call, we’ll help you figure it out. 1-330-630-0240. Thanks for watching!
I have a 77 c10 with headers high rise intake edelbrock carb msd ignition have a regular mechanical fuel pump and at times feels like it needs gas what can it be do I need to buy a edelbrock mechanical fuel pump or do I need a electric fuel pump
Hi Chevy Chevy,
Stock mechanical pumps are capable of approximately 4-7 psi but they are not designed to push a lot of volume. With the additional horsepower created from the installation of your aftermarket parts, you will need additional fuel volume. That can be provided by an aftermarket mechanical pump such as Holley or Summit, or an electric pump such as Holley, Aeromotive, Quick Fuel etc..
A mechanical pump would be the more cost effective way to go and would handle the job just fine. An electric pump will require extra fuel line and wiring that makes them a little more labor intensive to install properly.
So I should buy a edelbrock mechanical fuel pump And It Will Do
Summit Racing can you give me the part number for a silverado 1977 4x4 2 tanks so I can order it from your website
Chevy Chevy,
Can you give our tech line a call? 1-330-630-0240. We have a few questions for you. Thanks!
I just had a stock 1970 F100 w 302 refreshed and the mechanic put an electric fuel pump on it. When I asked why he didn't just put a new mechanical, he said the new ones don't hold up.
It seems to work fine but that godforsaken buzzzing drives me nuts. The buzzing also ocillates in cadence with my turn signals.
Mechanical is way more reliable, the mechanic is dumb
@@beamishlotus7269 pretty sure you're right, about everything he did I had to get redone.
Can you pull gas out of the top of a fuel tank with an in line external fuel pump?
Hi Jeffery Pevy,
Yes, you can, as long as the electric pump is mounted lower than the bottom of the tank (a good siphon), and the draw or suction tube internally goes all the way to the bottom of the tank. Keep the pump as close to the tank as possible too!
Ive never heard a fuel pressure gauge referred to as a "dial".
Computers are for word processing. Not for your car!
It had a 454 in it
I just purchased an Edelbrock #1406 600CFM Carburetor for my 350 stock Chevy and I am switching from a Mr Gasket electric fuel pump back to mechanical. The new Precision #M16011 pump is rated to 9psi. Edelbrock say no more than 6psi at idle. What should I do?
I purchased the C20 truck this way, it had the electric fuel pump mounted about 18-24 inches from the carburetor just hanging down the side of the block. It is now leaking from the outlet port, the built in brass grommet that is molded inside of the body of the pump!
Hi 707SonomaComa,
Use of a fuel pressure regulator is all that is required. Take a look at this one (SUM-G3032) on the Summit Racing website. www.summitracing.com/parts/sum-g3032/overview/
can i have a mechanical fuel pump on my gokart so that the faster i go the more power i have? maybe i could put a turbocharger on it too.
CFFA17 there are fuel pumps for small engines that work off of vacuum pressure.
Sorry its not quite that easy. but yes turbo and more fuel could do it, but making more power requires many things. Its a balance of air, fuel compression, flow , spark, and timing. Try reading up on things like porting, which helps understand flow, turbocharging and supercharging, which are a couple of the most common way to get alot of extra power, plus study some serious engine builders, such as tom nelson, and lingenfelter (spelling?.
There are entertaining shows like roadkill,and you will understand some of the mechanical skills but its not the best for raw knowlege. I hope you keep seeking to find the answers to what you want and keep learning.
Keep your enthusiasm and keep asking questions.
Hello i am working on a 1967 Datsun 1600 roadster,for some reason the previous owner changed from menchanical to electric but it stays running all the time is that normal and fuel keeps running out the over flow i have problems can you help?
can you install a mechanic fuel pump on any motor
Hi crazycarl,
No, the motor must have a fuel pump mounting pad designed into it from the factory.
uhhhhhhhhhhhh,no
So when you goes to KFC use pull door rather than push door so no one get toast
I have a 68 Mustang, 351M with about 350 hp. I've tried several mechanical pumps & my fuel filter is always empty & the car won't start when hot. I've switched to electric fans which have helped but I'm wondering would putting an electric fuel pump back by the tank & "feeding" gas to the mechanical pump help with the shortage of fuel or should I just go straight to an electric pump? Thoughts?
Mark Troilo sounds like you have a vapor lock issue as you stated it happens when it’s hot.
@@brandonb5298 I figured that was the problem but didn't know if putting the electric fuel pump by the tank & pushing more fuel to it would remedy the problem but I think I'm going to an in-tank electric pump with a return. Thanks.
Mark Troilo I’d do that route and also try keeping any fuels lines as far away from the motor and exhaust as possible and in a way that allows airflow especially if your system consists of metal lines
wouldnt***
I don't think what he said about a pusher vs puller pump is correct. A pump creates a force on the liquid. The force is the same, whether it's a on the block on in the tank. And I had an electric fuel mounted on the block and it worked fine.
no no no nO No NO!!
what a waste of time
Vow polo 1970 1.1 cc what size fuel pump would you need
What PSI for a Q-jet on a stock 350? I want to run an electric fuel pump.
Hi Spennyman10,
Quadrajets can be run safely at 4-6psi of fuel pressure!
Summit Racing Thanks guys!
I have a 1959 Super 88 Oldsmobile with 394 cbi V8 engine and Rochester 4 brl carb. I'm currently using the standard mechanical fuel pump but I would like to go with an electric pump...what system do you have that would fit this?
+dukestory ,
We need some additional information from you. Can you give our tech department a call? 1-330-630-0240. Thanks for watching!
For turbo on a carby, is it easy to upgrade mechanical fuel pump without modification??
+Nicholas Bassaholic,
We need some additional information from you. Can you give our tech line a call? 1-330-630-0240.
Thanks!