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Technical Edelbrock carbs

Discussion in 'The Hokey Ass Message Board' started by OLDSMAN, Mar 16, 2016.

  1. OLDSMAN
    Joined: Jul 20, 2006
    Posts: 2,422

    OLDSMAN
    BANNED

    A couple of years ago I bought an Edelbrock 600 carb at a swap meet to use on the 42 Chevy project. Since I just built the engine for it last week, it was time to rebuild the carb. When I tore it apart I noticed WEBER cast into the body of the carb. I guess Edelbrock must have Weber do the casting work on the carbs. Probably a good move on their part, that way they don't have the cost involved.
     
  2. models916
    Joined: Apr 19, 2012
    Posts: 379

    models916
    Member

    I don't think that is true anymore. Weber was making them in Italy for some time. I think they are locally produced now.
     
  3. 26 roadster
    Joined: Apr 21, 2008
    Posts: 2,020

    26 roadster
    Member

    I have a dozen or so and some have Weber and some don't, all the kits are the same, AFB, Carter and Edelbrock
     
  4. OLDSMAN
    Joined: Jul 20, 2006
    Posts: 2,422

    OLDSMAN
    BANNED

    I don't know how old this carb is, but I bought it 2 or 3 years ago. I bought an Edelbrock kit from Speedway for it
     
  5. aaggie
    Joined: Nov 21, 2009
    Posts: 2,530

    aaggie
    Member

    Good carb design and has been around for a long time. They are pretty much trouble free and don't leak. Adjust the mixture screws and after it warms up and the choke is off, set the idle speed. Use a good external fuel filter and keep the pump pressure around 5# or a little less.
     
    belair and Atwater Mike like this.
  6. The kit should work just fine.


    ^^^ they are good carbs, I think the best Edelbrocks was when they were using Weber carbs. I think weber did the initial casting and Edelbrock did the final ***embly if I am not mistaken.
     
  7. DDDenny
    Joined: Feb 6, 2015
    Posts: 22,592

    DDDenny
    Member
    from oregon

    Out of the box, they work pretty good, not perfect for all combos, but with the booklet that comes with them as well as a plethora of replacement parts they offer, these are really hard to beat for a street engine. I don't know what they charge for the booklet, but I'd bet it's worth having if you plan on doing some parts swapping.
    I did learn one thing about them (at least the case with their earlier ones), the 600 w/elec.
    choke version is not just a manual choke 600 with an electric choke added.
    The manual choke version is internally set up with richer metering out of the box.
     
    Atwater Mike likes this.
  8. oj
    Joined: Jul 27, 2008
    Posts: 6,590

    oj
    Member

    One thing about the edelbrock, other than fuel pressure, is that fuel boils in them easily. the float area is inside the carb, holley has the float bowls out in space, I've measured the fuel boiling in an edelbrock with 145deg temp on the intake manifold. To avoid this get a phonelic spacer under the carb, a 1/2" is all you need.
    An edelbrock is so trouble free it just takes up the space between the intake and air cleaner.
     
  9. Mr. DD is correct. The electric choke versions are set up more for fuel economy. Manual choke and no choke versions are set up more for performance. And it's not just a jet or metering rod change, but it does help. P***ages inside the carbs are different. Also, it doesn't always help and sometimes hurts to take the choke plates out of these carbs. They are set-up from the factory to direct air across the booster ***ys. in a certain spot for the best performance.
     
  10. Atwater Mike
    Joined: May 31, 2002
    Posts: 11,618

    Atwater Mike
    Member

    I've used these carbs since they were the "New AFBs", by Carter. Just replaced the 650 Holley double pumper with an electric Edelbrock 600, notable performance deficit!
    BUT, (and it's a big one) this Edelbrock starts cold with a 1/4 turn at the flywheel...cranks for about 1 second...cold idle is smooth 'til choke releases, then it's so smooth you wouldn't know there's a 290* cam in there. (it does idle lopey...)
    But shifts are smooth, my wife drove it and asked, "Did you do the same thing to the truck that you did to Cisco?"
    Er...I had poor Cisco 'neutered'. But hey! The truck won't piss on the Galaxie any more...
     
  11. OLDSMAN
    Joined: Jul 20, 2006
    Posts: 2,422

    OLDSMAN
    BANNED

    J have used AFB carbs in the past and they are very simple to tune, much more reliable than Holley's, good economy too. I paid $20 for this one at a swap meet, beats the hell out of the $320 -$350 foe a new one.
     
  12. 46stude
    Joined: Mar 3, 2004
    Posts: 1,718

    46stude
    Member

    X 2

    A spacer is a must for these carbs, IMO. I used the cheapy plastic type on my Thunderbird. Heat soak was horrible without it. Would not start until it cooled off, once the car was up to operating temp.
     
  13. T.L.
    Joined: May 24, 2011
    Posts: 209

    T.L.
    Member
    from Colorado

    That's not the carb's fault. It's a result of ethanol in today's gasoline (which ****s). Holley's suffer the same issue. Think about it: we never had this heat-soak problem with any carb 25 years ago...
     
  14. OLDSMAN
    Joined: Jul 20, 2006
    Posts: 2,422

    OLDSMAN
    BANNED

    Years ago I had an AFB on my 39 deluxe coupe with a 400 Pontiac and had fuel boiling problems. I got a heat shield that Ford used on 351 Windsor with Holley carbs in their pickups. That cured the problem on that car. I don't know if the heat shield is still available from Ford or not
     
  15. Ebbsspeed
    Joined: Nov 11, 2005
    Posts: 6,492

    Ebbsspeed
    ALLIANCE MEMBER

    You must have close to 0% leakdown.;)
     
  16. DDDenny
    Joined: Feb 6, 2015
    Posts: 22,592

    DDDenny
    Member
    from oregon

    I have a GM issue one on my small block, Eddy carb and performer intake, bought it in the 90's, not sure they are still available, I know many are available in the aftermarket.
     
  17. Montana1
    Joined: Jan 1, 2015
    Posts: 2,141

    Montana1
    Member

    Flatheads vapor lock with no ethanol and a Stromberg too. :eek:
     
  18. Montana1
    Joined: Jan 1, 2015
    Posts: 2,141

    Montana1
    Member

    I took all my Holleys off and sold them cheap.

    Put on Edelbrocks and didn't look back! Very pleased with ease of tuning and performance.

    I always remember my uncles 409/425 HP had two of them!
     
  19. LostBoy
    Joined: Mar 16, 2016
    Posts: 217

    LostBoy

    I too have had very good luck with them. I had one in a 66 impala with a 350 "r" code swapped from a fuel injected gmc w3500 cabover.
     

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