The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 05-07-2014, 06:34 PM   #1
Lattimer
Registered User
 
Lattimer's Avatar
 
Join Date: Jan 2013
Location: Mickleton, NJ
Posts: 1,776
Re: Edelbrock Carb

Quote:
Originally Posted by MidLifer View Post
Wow this is the first I've read about the fuel pump issue and explains a lot. I have the 1400 (which is a 1406 with an extra vacuum port on it for smog options) and a stock fuel pump, and on a hot engine I often smell gas after I shut it off.

The other issue I've had with my carb is that it is being finicky about the low vacuum I get with my cam. I probably need to break down and spend some time with springs and jets, I even bought the jet kit this winter, but have been too lazy to do the work.

In the collective opinion is it worth $125 to buy an Edelbrock fuel pump?
I wouldn't. Just put a regulator in front of the carb. You can get them for $35 or so.
__________________
Shawn

1970 Chevy C-10 SWB, 350, TKO 600 5 speed
My build http://67-72chevytrucks.com/vboard/s...d.php?t=559881
Lattimer is offline   Reply With Quote
Old 05-09-2014, 12:13 PM   #2
Hugh Mongus
Registered User
 
Join Date: Jan 2014
Location: Tulsa, OK
Posts: 360
Re: Edelbrock Carb

My last truck ('69 swb) came with a holley 750 double pumper. The engine had a mild build and it ran really good. When that carb started giving me problems, I swapped it out with an Edelbrock. While it ran good until I sold it, it didn't have the performance the Holley did. But...when I installed the new engine in my current truck ('71 swb), I installed another Edelbrock. Edelbrocks, for me, are much easier to work on than Holleys.

So in my opinion, Holleys are better for performance and Edelbrocks are good for ease of use.

If use choose an Edelbrock be sure to talk to the tech guys before you mate it with an intake. I just recently found out that that the 1406 and the Performer RPM intake do not work together. I would also buy the rod/spring kit for the carb you decide to buy so you can tune it easily. Although, keep in mind there are numerous combinations of springs, jets, and rods and you may not get everything you need in the prepackaged kit. You can buy everything separately though if the need arises.

Good luck to you!
__________________
-Jason
USN Retired
Hugh Mongus is offline   Reply With Quote
Old 01-10-2018, 06:23 PM   #3
willy12844
Registered User
 
Join Date: Jul 2015
Location: Gilberts, illinois
Posts: 102
Re: Edelbrock Carb

I'm having the same problem with the smell of gas in the garage and sometimes is slightly harder both warm and cold. Will buying a $100.00 pressure gauge give or take a few bucks get me any better gas mileage outta my big block???
Bill
__________________
The pessimist is one who feels bad when he feels good for,
fear he'll feel worse when he feels better
willy12844 is offline   Reply With Quote
Old 01-10-2018, 06:35 PM   #4
geezer#99
Registered User
 
geezer#99's Avatar
 
Join Date: Aug 2009
Location: Bowser
Posts: 13,777
Re: Edelbrock Carb

Quote:
Originally Posted by willy12844 View Post
I'm having the same problem with the smell of gas in the garage and sometimes is slightly harder both warm and cold. Will buying a $100.00 pressure gauge give or take a few bucks get me any better gas mileage outta my big block???


Bill
100 bucks!
For a gauge!
You likely need a regulator.
Maybe 40 bucks.
Plus a gauge, maybe 20 more.
Don’t get a liquid filled gauge though. They don’t like heat.
geezer#99 is offline   Reply With Quote
Old 05-07-2014, 04:22 PM   #5
NoNeck
Registered User
 
NoNeck's Avatar
 
Join Date: Jan 2011
Location: Chattanooga, TN
Posts: 1,108
Re: Edelbrock Carb

Quote:
In the collective opinion is it worth $125 to buy an Edelbrock fuel pump?
Midlifer -

I wouldn't buy the Edelbrock fuel pump. Just pick up a Fuel Pressure Regulator. It fits between the fuel pump and the carb, ideally in a position so that you can read the gauge. Mr. Gasket sells a nice one for about $30 (I think).

The other option would be to find a STOCK fuel pump that is rated in the 4 to 6 PSI range. The problem with rebuilt auto parts store pumps is in most cases you don't know what you are getting. GM originally offered "HI VOLUME" fuel pumps, but they were generally used on higher horsepower engines (Corvettes, Z28 Camaros and of course Big Blocks).

I think the Edelbrock fuel pumps have been matched to the metering characteristics of their carbs.

Just my 2¢...

POP
__________________
2016 RAM Laramie HEMI
1966 Fairlane GT/A, 390/335 HP

If it costs you a dollar to make a friend, KEEP THE DOLLAR.
If it costs you a friend to make a dollar, KEEP THE FRIEND.
NoNeck is offline   Reply With Quote
Old 05-07-2014, 09:10 PM   #6
engineer_gregh
Registered User
 
engineer_gregh's Avatar
 
Join Date: Feb 2012
Location: Smyrna TN
Posts: 1,153
Re: Edelbrock Carb

I got tired of adjusting and chasing the idle problem on the BB and broke down and decided to go all Edelbrock from the fuel pump up. I read a couple of threads on the board of pressure regulators leaking so I also decided not to take the chance. Here is the parts list and prices of what I bought and installed. I realize its pricey but it fixed my problem.

350-8124 FUEL LINE BRAID SS BBC $47.95
350-8131 FUEL LINE W/FILT TS/PS P $39.97
350-1722 FUEL PUMP STREET BB-CHEVY $117.57
350-9265 HEAT INSULATOR GASKT OPEN $15.97
engineer_gregh is offline   Reply With Quote
Old 05-07-2014, 10:26 PM   #7
richards72chevy
Registered User
 
richards72chevy's Avatar
 
Join Date: Dec 2010
Location: konawa ok/oakdale Ca.
Posts: 1,653
Re: Edelbrock Carb

My 69 impala never had a problem of running rich or the other problems with not running their fuel pump or regulator.But my truck was a different story.Installed their fuel pump and all the problems I had went away except for the black smoke coming from the exhaust never went away.But that may be another problem.
richards72chevy is offline   Reply With Quote
Old 05-08-2014, 06:20 AM   #8
Tx Firefighter
Watch out for your cornhole !
 
Tx Firefighter's Avatar
 
Join Date: Jun 2003
Location: Azle, Texas
Posts: 14,162
Re: Edelbrock Carb

The floats are in the center (I meant relatively) where they're subject to engine heat, compared to a Holley where they are suspended off of the body front and rear and insulated by being surrounded by air.
__________________
I'm on the Instagram- @Gearhead_Kevin
Tx Firefighter is offline   Reply With Quote
Old 05-08-2014, 07:55 AM   #9
NoNeck
Registered User
 
NoNeck's Avatar
 
Join Date: Jan 2011
Location: Chattanooga, TN
Posts: 1,108
Re: Edelbrock Carb

Quote:
Q: I see fuel dripping from the carburetor boosters at idle, what causes this?

A: Too much fuel pressure usually causes this and often times dirt in the float bowls can do the same. Make sure your fuel pressure does not exceed 6.0 psi, optimum pressure is 5.5 psi.
Pulled directly from the Edelbrock website under troubleshooting.

POP
__________________
2016 RAM Laramie HEMI
1966 Fairlane GT/A, 390/335 HP

If it costs you a dollar to make a friend, KEEP THE DOLLAR.
If it costs you a friend to make a dollar, KEEP THE FRIEND.
NoNeck is offline   Reply With Quote
Old 05-08-2014, 08:20 AM   #10
MidLifer
Senior Member
 
MidLifer's Avatar
 
Join Date: Apr 2011
Location: South NJ
Posts: 1,268
Re: Edelbrock Carb

Thanks for all the info guys. FWIW there are multiple reviews online and YouTube videos about the Mr. Gasket Fuel Pressure Regulators leaking. Also with one of those you have to plumb a return line to the fuel tank. I'll start by trying the spacer, and go from there.

I'm getting closer every day to swapping in a LS....
MidLifer is offline   Reply With Quote
Old 05-08-2014, 10:06 PM   #11
jrigheimer
Registered User
 
jrigheimer's Avatar
 
Join Date: Feb 2014
Location: CA
Posts: 84
Re: Edelbrock Carb

I know i will need and adapter plate, but will i also need a throttle bracket of some kind? What the psi of the mechanical fuel pump
jrigheimer is offline   Reply With Quote
Old 05-09-2014, 05:30 PM   #12
dirtyjim
Registered User
 
dirtyjim's Avatar
 
Join Date: Feb 2013
Location: alvin, texas
Posts: 622
Re: Edelbrock Carb

I had to run a regulator on mine after I replaced my fuel pump.
the edelbrock carb was on the truck when I bought it but i'll end up replacing it with a holley or efi in the future.
__________________
1967 C10 lwb two tone, 305 & rat fink style floor shifted 700r4, 20" steelies
2004 2500HD utility bed aka Brutus
dirtyjim is offline   Reply With Quote
Old 05-09-2014, 05:46 PM   #13
MidLifer
Senior Member
 
MidLifer's Avatar
 
Join Date: Apr 2011
Location: South NJ
Posts: 1,268
Re: Edelbrock Carb

Never mind...I asked a dumb question then found the answer...

BTW I called Edelbrock and they were extremely helpful with my situation. Told me which metering rods and which springs to install, based on my cam spec. Also timing recommendation.

Lastly, they confirmed the fuel pressure issue, so I'll be adding a regulator. You should not put more than 6 lb into an Eddy. My pump puts out 8.5.

Last edited by MidLifer; 05-09-2014 at 06:52 PM. Reason: Figured it out myself
MidLifer is offline   Reply With Quote
Old 12-02-2016, 11:29 PM   #14
18Z
Registered User
 
18Z's Avatar
 
Join Date: Nov 2015
Location: Boise, Idaho
Posts: 229
Re: Edelbrock Carb

I know this is an old thread but I do have a question for Tx firefighter and jmking9. Which phenolic spacer do you recommend for a edelbrock 1406 carb??

Thanks
18Z
18Z is offline   Reply With Quote
Old 12-03-2016, 12:05 AM   #15
Ironhorse
Senior Member
 
Ironhorse's Avatar
 
Join Date: Jul 2001
Location: Wellington, Ks
Posts: 10,342
Re: Edelbrock Carb

Over the years I have run QJs, Carter AFBs (Edelbrock predecessor) current Edelbrocks and Holleys. They all have their issues if not set up correctly and mated to the correct engine, cam, intake, timing, etc. Holleys worked for me racing my '57 2dr on the 1/4 mile but after three or four runs I always had to readjust the float level. Currently I have an original 600 cfm Carter AFB on a Edellbrock Performer RPM intake, 350 ci. and "built" 700R4 in my '71 Chevelle . Runs great with a generic parts store mechanical fuel pump. '71
4x4 truck has a Edelbrock #9625 (625 cfm) on Edlebrock intake, stock 350 and also generic parts store mechanical pump. No fuel regulators on either one but I do run a phenolic spacer on both. No hard hot starts on either. Only issue I have if either vehicle sets for a couple weeks of no run time I do have to prime the carb. Thinking that is due to fuel evaporation from the bowl, may be wrong on that but not a big deal to me.

Carb opinions are like bellybuttons, everybody has one!!
__________________
1971 Chevy 1/2T 4x4 LWB 350 V-8
Was sm465-now 350TH/np205
Tilt, Tach, Towhooks
Original Truck AM/FM
Wellington, Ks
Ironhorse is offline   Reply With Quote
Old 12-03-2016, 12:07 AM   #16
Ironhorse
Senior Member
 
Ironhorse's Avatar
 
Join Date: Jul 2001
Location: Wellington, Ks
Posts: 10,342
Re: Edelbrock Carb

Quote:
Originally Posted by 18Z View Post
I know this is an old thread but I do have a question for Tx firefighter and jmking9. Which phenolic spacer do you recommend for a edelbrock 1406 carb??

Thanks
18Z
IBZ, I have a spare phenolic spacer hanging in the shop. Will look at it tomorrow and see if it has any #s or such on it. The ones I use have four individual venture holes to correctly fit the carb base. They ARE NOT a full open hole.
__________________
1971 Chevy 1/2T 4x4 LWB 350 V-8
Was sm465-now 350TH/np205
Tilt, Tach, Towhooks
Original Truck AM/FM
Wellington, Ks
Ironhorse is offline   Reply With Quote
Old 12-03-2016, 09:00 AM   #17
engineer_gregh
Registered User
 
engineer_gregh's Avatar
 
Join Date: Feb 2012
Location: Smyrna TN
Posts: 1,153
Re: Edelbrock Carb

18Z this is the spacer thats been on my truck since 2014 with no issues. 350-9265 HEAT INSULATOR GASKT
__________________
1971 Longbed BB Cheyenne Super
1972 Longbed SB Cheyenne Super
1972 Longbed Highlander Custom Deluxe
1975 K5 4x4 full convertible

Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=645165

Greg Smyrna TN
engineer_gregh is offline   Reply With Quote
Old 12-03-2016, 12:48 PM   #18
Eddie H.
Registered User
 
Eddie H.'s Avatar
 
Join Date: Mar 2001
Location: Paradise TX USA
Posts: 1,200
Re: Edelbrock Carb

I guess I may as well join in beating this dead horse. I have been running Carter AFB/Edlebrock carbs completely trouble free for more than 40 years. I have never used a fuel pressure regulator or aftermarket fuel pump, and I always use a phenolic spacer to prevent heat soak/percolation. That's just my experience, for whatever it's worth. Other folks may have different results.
__________________
"Negative people always seem to have a problem for every solution"
Eddie H. is offline   Reply With Quote
Old 12-03-2016, 02:15 PM   #19
18Z
Registered User
 
18Z's Avatar
 
Join Date: Nov 2015
Location: Boise, Idaho
Posts: 229
Re: Edelbrock Carb

Eddie H. Which spacer do you use?
18Z is offline   Reply With Quote
Old 12-03-2016, 04:45 PM   #20
Eddie H.
Registered User
 
Eddie H.'s Avatar
 
Join Date: Mar 2001
Location: Paradise TX USA
Posts: 1,200
Re: Edelbrock Carb

Quote:
Originally Posted by 18Z View Post
Eddie H. Which spacer do you use?
On my last 2 Edlebrocks, I just used a generic 4 hole 1 inch plastic spacer that I picked up at a swap meet. It really doesn't matter much what you use, as long as it insulates the carburetor from the manifold heat. You could probably make one out of a piece of wood and it would work just fine.
__________________
"Negative people always seem to have a problem for every solution"
Eddie H. is offline   Reply With Quote
Old 12-03-2016, 05:34 PM   #21
Ironhorse
Senior Member
 
Ironhorse's Avatar
 
Join Date: Jul 2001
Location: Wellington, Ks
Posts: 10,342
Re: Edelbrock Carb

IBZ, pics of the 4 hole style phenolic spacer I use. Will require longer carb studs but they can be had at most decent parts houses, even O'reilly, Auto Zone etc. I DO NOT use the full open QJ style figuring without the 4 smaller seperate venturi openings that match the Carter/lEdelbrock base plate, the full open style would cause a turbulence to the air downflow. ??? Not sure bout that but seems reasonable to me. The spacer is 1'' thick, could use 1/2'' also, the smooth flat portion is the top which goes against the carb baseplate, the more open portion goes to the intake / gasket area. Not familiar with the HVH logo, picked this up at a swap meet for $5 just to have a spare. Hope this helps and good luck with your carb issues.

Got curious and Googled: " HVH Phenolic carb spacer " Came up at being High Velocity Heads, an aftermarket speed/race product company. Spacer sells thru Jegs for $89.00 plus ship so guess the $5 was well spent.

'68OrangeSunshine, thanks for the info on the #9625A carb. I was told it was an Edelbrock when I bought it at a swap meet years ago, $15-20 don't recall for sure. Used an Edelbrock kit for the rebuild and works great, truck is quite healthy when I push the romp on it pedal. Never checked the carb # thru Google, Google is your friend as they say. I use it a lot.
Attached Images
   
__________________
1971 Chevy 1/2T 4x4 LWB 350 V-8
Was sm465-now 350TH/np205
Tilt, Tach, Towhooks
Original Truck AM/FM
Wellington, Ks

Last edited by Ironhorse; 12-03-2016 at 06:10 PM. Reason: Added Info.
Ironhorse is offline   Reply With Quote
Old 12-03-2016, 07:05 PM   #22
Myoldtruck
Registered User
 
Myoldtruck's Avatar
 
Join Date: Sep 2015
Location: Mohnton pa.
Posts: 208
Re: Edelbrock Carb

Im also running a 5psi regulator before the carb. I also had alot of problems with jetting. Doing research the 1406 is jetted leaner than the 1405 manual choke model. I rejetted the 1406 to the 1405 specs. Truck runs very well now, it has a stock mr gasket crate 350.
Myoldtruck is offline   Reply With Quote
Old 12-03-2016, 08:56 PM   #23
'68OrangeSunshine
Senior Member
 
'68OrangeSunshine's Avatar
 
Join Date: Feb 2002
Location: Tucson, AZ USA
Posts: 7,622
Re: Edelbrock Carb

Quote:
Originally Posted by Ironhorse View Post
'68OrangeSunshine, thanks for the info on the #9625A carb. I was told it was an Edelbrock when I bought it at a swap meet years ago, $15-20 don't recall for sure. Used an Edelbrock kit for the rebuild and works great, truck is quite healthy when I push the romp on it pedal. Never checked the carb # thru Google, Google is your friend as they say. I use it a lot.
Tomato, tomahto. Basicially the same carb with 2 different retail vendors at one time. Now only one.
Like GMC/ Chevy... Rolls Royce/ Bentley. The badging affects the price tag, not the internal quality.
Good score.
Just remember when you call Edelbrock's tech line, don't let on that you have a Carter AFB, they'll dummy up.
Some matches:
Edl-1405 = AFB 9625A
Edl-1400 = AFB 9635 [w/EGR]
__________________


Every 25 years I like to rebuild that 292, whether it needs it or not.

Last edited by '68OrangeSunshine; 12-05-2016 at 04:55 PM.
'68OrangeSunshine is offline   Reply With Quote
Old 12-03-2016, 03:09 PM   #24
'68OrangeSunshine
Senior Member
 
'68OrangeSunshine's Avatar
 
Join Date: Feb 2002
Location: Tucson, AZ USA
Posts: 7,622
Re: Edelbrock Carb

Ironhorse: 9625 is a Carter AFB number. I have a Carter AFB 9625A on my V8 350 in a '71 GMC Jimmy [k/5]. I tune it as an Edelbrock 1405 [manual choke]. I always thought it flowed 600 CFM, but there's no way to measure at this end. Carter designed and produced the AFB, then got bought out by Federal Mogul, who continued the "AFB Performance Series" carbs. The same [Weber?] plant was making the same carb for both FM (dba ''Carter'') and Edelbrock. The "Performer" Eddies were shinier and retailed higher for the same carb. Eventually FM dropped out of the carb line, leaving Edselbrock as the only game in town.
About 10 years ago, I put a Holley fuel pressure regulator inline to my AFB on the Jimmy, as advised by the many experts on this board. I wasn't passing AZ emissions, and after trying everything myself, got hold of a pro mechanic. First thing he did was tell me to lose the regulator. I still have it -- in the parts drawer.
Phenolic spacer is a must. I have a 1/2" tall aluminum Offy Squarebore/Spreadbore adapter on the bottom, over my Wieand 8004 intake, and a 1/2'' phenolic 4-hole spacer directly under the 9625A.
__________________


Every 25 years I like to rebuild that 292, whether it needs it or not.

Last edited by '68OrangeSunshine; 12-03-2016 at 03:16 PM.
'68OrangeSunshine is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 05:51 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2025, vBulletin Solutions Inc.
Copyright 1997-2025 67-72chevytrucks.com