Question for Edelbrock Carb users...

dsrtjeeper · Post by **dsrtjeeper** » February 13, 2011, 11:37 pm

Are you running a regulator with your stock mechanical fuel pump? The Edelbrock carbs like around 5.5psi of fuel pressure and the stock FE fuel pumps put out up to 7psi. Just wondering if I should be concerned about pushing fuel past the needle valve.
Thanks!
Eric

Bill W · Post by **Bill W** » February 14, 2011, 12:57 am

i will say this Eric... i had a edelbrock carb on my 352 with a stock fuel pump (no regulator) talk about smelling gas all the time and 8 miles per gallon at best.

i did switch to a holley carb a few weeks ago, much better!

randyr · Post by **randyr** » February 14, 2011, 2:43 am

Bill W wrote:i will say this Eric... i had a edelbrock carb on my 352 with a stock fuel pump (no regulator) talk about smelling gas all the time and 8 miles per gallon at best.

i did switch to a holley carb a few weeks ago, much better!

Hmmm....maybe that's what's wrong with mine. I put an Edelbrock 1406 on my 352 about a year ago and I get 10mpg's at best. How much better is the Holley, Bill?

Brian Taylor · Post by **Brian Taylor** » February 14, 2011, 7:59 am

I have ran a couple of Eddys on several cars, I personally do not use them anymore. I prefer the holley for easy of use and rebuilding, like others the MPG and other issues with the eddys.
I was really pleased with a road demon I used on my big block mopar. It was more responsive and better all around than the eddy I took off.
I am sure others will chime in with opinion for both sides, but like others I prefer a holley design.

dsrtjeeper · Post by **dsrtjeeper** » February 14, 2011, 10:59 am

I'm wondering if the problem that you all describe is simply a lack of a fuel regulator? I literally had gas in my oil. Edelbrock warns users about too much fuel pressure right on their site and it's got me thinking. My son is a mec hanic and we are going to throw the sniffer into the tail pipes to check air/fuel ratio. I'll let everyone know in a few days.
Thanks!
Eric

frdnut · Post by **frdnut** » February 14, 2011, 2:10 pm

Our 65 had a 1406 eddy on it when we got it..If anything it seems too lean on the 390 with headers...It's odd to see people saying the holleys get better mileage..It's usually the other way around on all the mustang sites that I frequent..

PFM-64f100 · Post by **PFM-64f100** » February 14, 2011, 2:44 pm

When I switched from a holley to ed I had to put a regulator on the input. The holley was ok up to about 7 psi the ed couldn't do anything more than 4psi. I know this because I am runing electric and could turn on pump and adjust/watch. when I went over 4 fuel was coming out the middle of carb. Hope this helps. i also read something way back then that they only like 4psi and below....

MadMaxetc · Post by **MadMaxetc** » February 14, 2011, 3:04 pm

I have never had any of these problems.

My 302 got horible milage and I could never get the jets right with the Holley. I switched to the Edelbrock and picked up 2mpg and much better response at low rpm. Ran a Blue holley elec fuel pump. 5psi if I remember right...sold it a long time ago.

I run an Edelbrock on my 300. I have a clear inline fuel filter and it never actualy fills with fuel, always has some air. It has a new mech fuel pump. I have never checked the press, but I bet it is low.

Guess I just have had good luck. I think it has a lot to do with having the proper setup. in the performance world there are a lot of variables. It is not fair to judge a combo or component based on large pools of data. If you have a lot of Chevy guys running Holleys because they are a better out of the box fit to a 350, then the data will skew the direction that Holley s are great out of the box.

A 390 needs to be jeted down and tuned out of the box to work on a 300. (To be fair so does an Edelbrock 500cfm)
If one carb is ALWAYS beter than another, why do they still make them? Engines are a picky beasts, it takes a lot of science and testing to get a good combo...when science is not availible, dumb luck and many iteration can be subsituted.

(PS, I prefer Edelbrocks)

dsrtjeeper · Post by **dsrtjeeper** » February 14, 2011, 8:10 pm

Here's a surefire way to see if your fuel pump has too much pressure for your Edelbrock....
While the vehicle is idling; look into the primaries of the carb and look for fuel dripping. If fuel is driping; the fuel pressure is pushing fuel past the needle valve.
Let me know if I'm wrong on this.
Eric

tray · Post by **tray** » February 14, 2011, 8:13 pm

I'm with Dan on this one Ive got Edelbrock on my 302 in my mustang and when my 64 slick needed new carb. with no hesitation I bolted a new edelbrock to my 460. Never used a regulater might need one for the 302 it does run alittle rich. Other than that no problems at all.

CoralRed · Post by **CoralRed** » February 17, 2011, 7:07 pm

I use a regulator with my Edelbrock on my 545 stroker. I like to know what my pressure is at, so putting in a regulator seems to be a good way to do that.