Edelbrock fuel pump

[prg machine]

I have one of the Carter Performer type 750 cfi carbs, now made by Edelbrock. i ordered a fuel pump from Summit advertised as the Summit/Edelbrock EDL291 3/8 ports and 6psi/// what I recieved was that part number but it has 1/2 inch ports and that is no biggy.... but the pressufe is 13-14 psi... should I return it?? or will it be okay?????
thanks....
I don't want to run a pressure regulator for a simple 4 barrel carb.

[piecesparts]

I am not sure what number fuel pump that you really have, but the EDL 1721, would be the better choice for street driving. I would also look at the Edelbrock adapter plate for the bottom of the pump. On my 84 GMC, the rear port on the pump was right up against the motor mount bracket, so I had to put the fuel in on the bottom.

You are right about the carb. The Edelbrock 1400 series line and the Carter line is the same carb. They are all made by Magnetti-Marelli and are sold under the different names. The edelbrock tuning parts are cheaper than the Carter parts. My bet is that your # 1411 750 cfm carb will be to big for efficient daily driving and your fuel economy is suffering from that. I tried a 750 once and it caused a lot of slobbering and poor acceleration, UNLESS I was winding the motor up. It does open up the top end, though. I am now running the Edelbrock 650 CFM Thunder AVS model---much better choice.

[Billla]

Yes, return the pump; anything over 6-7 PSI requires a regulator.

Agree that you'll likely want the bottom plate adapter - the Edelbrock pump uses outlets that are 180 degrees opposed; you can rotate the outlets together, but not individually. Holley's pump allows positioning of both the inlet and outlet.

[PanelDeland]

If you're running a small block that is fairly mild,mostly street driving you will probably like a 625-650 cfm carb better.The smaller cfm carbs tend to get a better fuel ratio signal at part throttle.With the larger carbs there is so much room for air to flow it tends to interupt the vacuum that signals the amount of fuel flow.Someone very good can tune that mostly out but the smaller carb is much easier to dial in.
Just my opinion on the carb the fuel pump suggestions you got are probably from better experience than I have.

[prg machine]

mmm My big mistake guys.... the pump is a 6psi and with the 3/.8 ports,, not the 1/2 inch. I looked at the box and read it last night late and didn't open it until today and found out that the box describes both the 13-14 lb. pump and the 6 pound pump.... they bothcome in the same box..... i have the right one after alll...
the reason I have the 750 is because I got it for 100 bucks and it is like new... the guy had it on a mild 327.. my engine is a 383 with 2.02 intake valves,,,, open chamber heads,,,, running fuller roller valvetrain with a cam rocker combination ift of about .520..... i was told the 750 is the better choice for this mill.. the 650 would starve it for flow....

We'll see I guess!!

[70GMCer]

You got the right carb for the 383. I also have a 750 on my 383....

[prg machine]

hey 70 GMCer mind if I ask about gas milage and what to expect???

[piecesparts]

Originally Posted by prg machine

mmm My big mistake guys.... the pump is a 6psi and with the 3/.8 ports,, not the 1/2 inch. I looked at the box and read it last night late and didn't open it until today and found out that the box describes both the 13-14 lb. pump and the 6 pound pump.... they bothcome in the same box..... i have the right one after alll...
the reason I have the 750 is because I got it for 100 bucks and it is like new... the guy had it on a mild 327.. my engine is a 383 with 2.02 intake valves,,,, open chamber heads,,,, running fuller roller valvetrain with a cam rocker combination ift of about .520..... i was told the 750 is the better choice for this mill.. the 650 would starve it for flow....

We'll see I guess!!

Once again, I would like to provide input that the 750 works great for a lighter bodied vehicle, than your truck (example: a Camaro with a low end gear). The fuel/air signal and the velocity through the venturies is different from the 625, 650 carbs to the 750 carb. If you drive this on the street, the 383 stroker motor will run with the 750 but will be a tad sluggish at the stoplight (unless you bring the RPMs up before letting off the brake). As you use the engine there will be noted plating out of the fuel additives on your intake valves---been there, seen that. I had a 750 on my stroker motor and unless, I was opening it up and keeping the RPMs up to keep the intake velocity up, then it was a doggy mess. The 750 carb will raise your top end performance and that is great, however you do NOT drive in that band very much.

All of the manufacturers (Edelbrock, Holley, B.G.) will consider the weight of your vehicle and recommend the 650 or slightly smaller carb for every day driving. That is your choice, but my 650 CFM on my 383 is quite surprising in it's capabilities.

[prg machine]

Originally Posted by piecesparts

Once again, I would like to provide input that the 750 works great for a lighter bodied vehicle, than your truck (example: a Camaro with a low end gear). The fuel/air signal and the velocity through the venturies is different from the 625, 650 carbs to the 750 carb. If you drive this on the street, the 383 stroker motor will run with the 750 but will be a tad sluggish at the stoplight (unless you bring the RPMs up before letting off the brake). As you use the engine there will be noted plating out of the fuel additives on your intake valves---been there, seen that. I had a 750 on my stroker motor and unless, I was opening it up and keeping the RPMs up to keep the intake velocity up, then it was a doggy mess. The 750 carb will raise your top end performance and that is great, however you do NOT drive in that band very much.

All of the manufacturers (Edelbrock, Holley, B.G.) will consider the weight of your vehicle and recommend the 650 or slightly smaller carb for every day driving. That is your choice, but my 650 CFM on my 383 is quite surprising in it's capabilities.

I agree to an extent,,, my buddy is running the 650.... this 750 was 100 bucks and i grabbed it and i guess we will see how it goes... i am running a stick,, truck 4 speed and 4:11 gearing...... if that matters.

[piecesparts]

Originally Posted by prg machine

I agree to an extent,,, my buddy is running the 650.... this 750 was 100 bucks and i grabbed it and i guess we will see how it goes... i am running a stick,, truck 4 speed and 4:11 gearing...... if that matters.

With that combination, I would give the 750 a try. It could work well with the RPMs on the lower gear.

[prg machine]

COOLNESS!!!

what kinda mpg are you guys gettin???

[piecesparts]

I have a 385 stroker motor with a 650 Thunder AVS carb, edelbrock Performer RPM intake, Comp Cams roller cam, headers/ 2 1/2" dual exhaust700R4 tranny, 3.73 gears and I get right at 15 MPG. I run alower profile tire, so that brings my reaer end ratio down some more---it puts it at about 3.80 for a ratio.

My son's truck is a 350 with an edelbrock 1406 (625 CFM), Edelbrock Performer RPM intake, Crane performance cam, headers/ 2 1/2" dual exhaust, 700R4 with a 3.73 gear ratio and he gets 14.5 MPG. It doesn't sound like much, but the trucks are strong running.

When I had the 750 carb, my gas mileage was less than 15 MPG, but it had one hell of a top end. However, I can put my truck at 130 MPH without any problems now and it works great. So the 750 was not really needed.