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carb swap edelbrock to holley question

Discussion in 'The Hokey Ass Message Board' started by vintage_car, Apr 24, 2012.

  1. vintage_car
    Joined: Jul 4, 2010
    Posts: 71

    vintage_car
    Member

    I have an old edelbrock 650 manual choke sitting on a edlebrock performer dual plane manifold. the carb is leaking badly from various places. I'd like to swap to a holley. Is there a specific 650 from holley that I need to work with my intake? manual choke is still fine by me.
     
  2. DeucePhaeton
    Joined: Sep 10, 2003
    Posts: 1,013

    DeucePhaeton
    Member

    IMO, You'll be sorry.
    I swapped from a trouble-some Holley to an Edelbrock 19+ years ago and never looked back. never touched it again.
     
  3. Well do you need a vacuum secondary or a double pumper ? If you could get a vacuum secondary style carb that would be good for you.
     
  4. vintage_car
    Joined: Jul 4, 2010
    Posts: 71

    vintage_car
    Member

    it seems to be flooding out the truck. with the fuel pump running and psi at 5, fuel drips pretty steady out of the 2 marked areas in the photo. even after the truck is off it will slowly drip.
     

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  5. ididntdoit1960
    Joined: Dec 13, 2011
    Posts: 1,030

    ididntdoit1960
    Member
    from Western MA

    What motor? What car? What gear? What trans? What cam? What do you do with the car? All that said........if the edelbrock made you happy - i'd go with the old reliable list# 1850 vac secondary 600 cfm
     
  6. ididntdoit1960
    Joined: Dec 13, 2011
    Posts: 1,030

    ididntdoit1960
    Member
    from Western MA

    How much tension is/has been on your return spring?
     
  7. vintage_car
    Joined: Jul 4, 2010
    Posts: 71

    vintage_car
    Member

    good tension is on the return spring. I have a dual spring setup. the gas pedal does take a bit to push.

    It is a rat rod truck, 350-v8, crane energizer cam, 882 heads, headers, th-350, drive it when it isn't raining on the highway about 50 miles to and from work- highway speeds...and a few fun burnouts.
     
    Last edited: Apr 24, 2012
  8. el caballo loco
    Joined: Mar 7, 2012
    Posts: 166

    el caballo loco
    Member
    from colorado

    ok, i'll play. my edelbrock to holley question is... Why? And, the return spring is the thingie that closes your throttle when you lift off the gas. Looks like it's bleedin past the throttle shaft to me. You can have that sorta thing repaired. I'd stick with an edelbrock but that's just me. Had experience with both brands i just prefer an edelbrock. Opinions may vary.. :)

    checkout this page, its eddys tuning page. straight from the horses mouth so to speak, tell ya everthing ya ever wanna know bout em. :)
    http://www.edelbrock.com/automotive_new/mc/carbs_acc/pdf/carb_owners_manual.pdf
     
    Last edited: Apr 24, 2012
  9. 32ratsass
    Joined: Dec 14, 2007
    Posts: 258

    32ratsass
    Member

    The Edelbrock could probably benefit from a carb kit, and a float adjustment. Your picture indicates a probable float level problem or a needle/seat leakthrough problem. No matter what, from a reliability standpoint, and freedom from external leaks, you're going to be better off with the Edelbock.
     
  10. Deuces
    Joined: Nov 3, 2009
    Posts: 23,757

    Deuces

    I'd go with the 1850 carb also!!!!!!.. :D
     
  11. vintage_car
    Joined: Jul 4, 2010
    Posts: 71

    vintage_car
    Member

    alright, I see that I have started a holley vs. edelbrock carb thread...
     
  12. Johnny Gee
    Joined: Dec 3, 2009
    Posts: 12,604

    Johnny Gee
    Member
    from Downey, Ca

    As a few others have said, It's fuel pressure related (your test gauge may be bad) or a needle and seat issue. Double check those two things, the Carb is not junk.
    [​IMG]
     
  13. Deuces
    Joined: Nov 3, 2009
    Posts: 23,757

    Deuces

    Yep!...:D I'm a BiG fan of Holley carbs...;)
     
  14. zman
    Joined: Apr 2, 2001
    Posts: 16,731

    zman
    Member
    from Garner, NC

    hmmm...

    then you said this...

    I'm guessing you're confused as to where you are...
     
  15. Standard gas&oil
    Joined: Dec 3, 2010
    Posts: 289

    Standard gas&oil
    Member
    from USA #1

    X2 - $35.00 for a new rebuild kit and that thing will run like a champ. You already own the carb why pay $250.00 + for a new Holley?
     
  16. Larry T
    Joined: Nov 24, 2004
    Posts: 7,875

    Larry T
    Member

    A 1850 Holley (600 CFM) is a square bore carb and will bolt on where an Edelbrock was. You'll have to move the throttle linkage/cable but that's about all. Maybe mess with transmission cable if it has one too.

    Aren't the Edelbrocks rated at 625 CFM? I know they used to be.
     
  17. vintage_car
    Joined: Jul 4, 2010
    Posts: 71

    vintage_car
    Member

    not a forum that likes rats?
     

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  18. God I love this manual! :D I had an auto tech instructor years ago that had the entire class drawing carb circuits like this from memory for our Fuel Systems tests. Once you study this stuff as individual circuits you begin to realize that carburetors aren't nearly as complicated as they seem. OK, maybe just a little complicated. :rolleyes:

    But here's the real bonus. These circuits aren't just in Edelbrock and Carter carbs. You'll find the same stuff used in Rochesters, Holleys, Motorcrafts and on and on! :eek:
     
  19. trilobyte
    Joined: May 18, 2009
    Posts: 100

    trilobyte
    Member
    from California

    Only thing that I can think of is if you switch to a Holley, you might have to spend some time getting it all tuned to perfection, where if you got another Edelbrock, you could use the old one as reference.
     
  20. dickster27
    Joined: Feb 28, 2004
    Posts: 3,209

    dickster27
    Member
    from Texas

    I notice you have a dial regulator. Turn it down a bit and see if that don't reduce or stop the seepage.
     
  21. JeffB2
    Joined: Dec 18, 2006
    Posts: 9,484

    JeffB2
    Member
    from Phoenix,AZ

    A lot of those dial type regulators are junk,the old FILT-O-REG's were good but the offshore copies are hit and miss like Mr.Gasket and Spectre both have a lot of negative feedback on Amazon ratings.Like mentioned above check the fuel pressure with a gauge to see if the regulator is OK.The area you show leakage from is common with Quadrajets and Holley shaft bushings but very rare on AFB's and Edelbrocks.This fuel line I like as it has a port for a gauge http://www.summitracing.com/parts/SPE-29883/ then you can screw in a gauge http://www.summitracing.com/parts/SUM-G3122/ I have used several in the past.
     
    Last edited: Apr 25, 2012
  22. patrick english
    Joined: Feb 15, 2008
    Posts: 806

    patrick english
    Member
    from La puente

    just rebuild that thing....also,i thought you got banned for saying the r word?
     
  23. Moose223
    Joined: Sep 17, 2007
    Posts: 147

    Moose223
    Member

    Fuel pressure, simple rebuild on carb. And stick with the Edelbrock
     
  24. Don's Hot Rods
    Joined: Oct 7, 2005
    Posts: 8,319

    Don's Hot Rods
    Member
    from florida


    Bingo. :D


    One more vote for Edelbrocks. Holleys may pump out a little more perfromance, but on the street and Edelbrock can't be beat. Super troublefree.

    Don
     
  25. el caballo loco
    Joined: Mar 7, 2012
    Posts: 166

    el caballo loco
    Member
    from colorado

    +2 on the junk dial regulators. When i swapped my 2 bbl for a 1405, i bought the horror stories and added one. It stayed about 5 minutes. Removed it and my pressure gauge says 6 p.s.i. and everythings workin perfect.
     

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