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Thread: converting from holley to edelbrock
          
   
   

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  1. #1
    daveid's Avatar
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    converting from holley to edelbrock

     



    hi,
    ive been the one having problems with getting fuel in my oil pan, and so my next step is im going to try a new carb. I have a carter laying around, dont know the cfm, but im going to try and see if it makes a differance before spending the money on a new carb.
    The holley i have right now is a 4150hp and i have aluminum fuel lines that lead up to the regulator, and from the regulator on, its all size 8 AN fittings.

    My question is since the carter only has one fuel inlet, and its not made to fit with and AN fitting, How can i reconfigure my fuel line that i have to make it work? I know this probly sounds stupid but Im new to all this so its hard for my to know what would work best


    Thanx for the help

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    BigTruckDriver is offline CHR Member/Contributor Visit my Photo Gallery
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    How do you know fuel is in your oil,is it a lot or a little?What engine do you have whats the fuel set up?

  3. #3
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    after about 10 miles of driving it you can start to smell it in the oil and you can see it gets a little thinner. I have a chevy 454 and a 280gph electric fuel pump, And running about 5 psi of fuel.

    Also, I just saw that you can take off the inlet to the edelbrock which i didnt see before, So now i just need to confirm that it is a size 6AN fitting?


    thanx
    david

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    Originally posted by daveid
    after about 10 miles of driving it you can start to smell it in the oil and you can see it gets a little thinner. I have a chevy 454 and a 280gph electric fuel pump, And running about 5 psi of fuel.

    Also, I just saw that you can take off the inlet to the edelbrock which i didnt see before, So now i just need to confirm that it is a size 6AN fitting?


    thanx
    david
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  5. #5
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    oh. thanx

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    Re: converting from holley to edelbrock

     



    Originally posted by daveid
    hi,
    The holley i have right now is a 4150hp and i have aluminum fuel lines that lead up to the regulator, and from the regulator on, its all size 8 AN fittings.

    My question is since the carter only has one fuel inlet, and its not made to fit with and AN fitting, How can i reconfigure my fuel line that i have to make it work? I know this probly sounds stupid but Im new to all this so its hard for my to know what would work best


    Thanx for the help

    Earl's makes a fitting that adapts the Carter/Edelbrock carbs to #6 AN.

    Difficult to see in the photo, but it's there.

    The inlet on the fuel log is a #8 AN.

    Earl's also makes reducers and unions to go from #8 to #6 and vice-versa.
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    you have the old holley design with the removable top . right ? those carbs had an internal problem and constantly blew powervalves. they quit making them . i had 5 or six go bad. just ran super fat all the time. i replaced them with the 1850s holley. no problems since.

  8. #8
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    Here's a slightly different view.

    The adapter like most of the Earls fittings is anodized blue.

    The fitting screws into the large threads of the carb.

    The idirited brass colored fitting that comes stock on the Carter/Edelbrocks is an SAE 45 degree female fitting on the fuel hose/tube side.
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  9. #9
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    thanx guys for all the info.

    On the holley, i have only ran it like 20 miles since the rebuild. Do power valves blow that fast?

    thanx

  10. #10
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    Re: converting from holley to edelbrock

     



    Originally posted by daveid
    hi,
    ive been the one having problems with getting fuel in my oil pan, and so my next step is im going to try a new carb. I have a carter laying around, dont know the cfm, but im going to try and see if it makes a differance before spending the money on a new carb.
    The holley i have right now is a 4150hp and i have aluminum fuel lines that lead up to the regulator, and from the regulator on, its all size 8 AN fittings.

    My question is since the carter only has one fuel inlet, and its not made to fit with and AN fitting, How can i reconfigure my fuel line that i have to make it work? I know this probly sounds stupid but Im new to all this so its hard for my to know what would work best


    Thanx for the help
    Why would you do that ?The Holley is much easier to tune.

  11. #11
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    i found nothing to help. i replaced powervalves and still had problems. i have 3 in a box still. just a bad design i guess. never really figured it out and holley was mum about it. no help there.

  12. #12
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    Well that sux, Ive been dealing with this problem for like 6 months and have tried everything. I guess ill just get rid of it asap.
    I dont know what carb i want for sure. The main reason right now i was going to change to a carter was to see if i could isolate the problem for one, and two, not spend 400 bux to do it.

    thanx again for the info

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    moparmaddnes is offline CHR Member Visit my Photo Gallery
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    not trying to be a smartass, but what makes you think that its the carb? From my experiance that type of problem usually is a fuel pressure problem. I have never run a fuel pump, but can an improper functioning fuel cap, which isn't letting gas tank pressure to bleed out, push fuel past the fuel pump? Is the return line still properly hooked up if needed? To what I know with the power valve issue the only time I have blown one is when the motor has backfired and that has never to my knowledge let fuel to keep flowing down the cylinders.

  14. #14
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    Have you checked your Holley's float levels?

    Some Holley's - especially the Pinto Holley 2 bbl - have nitrocellulouse floats.
    With today's gasoline they tend to deteriorate and sink which raises fuel bowl levels to an unacceptable point.

    Fire the engine, the excess fuel washes down the cylinder walls and some of it finds it's way into the pan.

    Another point of fuel ingress is a mechanical fuel pump with a ruptured diaphragm that still pumps gas, but leaks some into the pan.

    Far as which carb - Holley or Carter/Edelbrock - is easier to tune, I think it has to do with which one you're most familiar with.

    I do ok with Holley's, but seem to do a little better with Carter/Edelbrocks.

    Either brand is simple as long as you keep to the basics and have a carb that's close to the factory baseline.
    C9

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    sorry guy, i'm thinking of the 4010/4011 carb. thought of it last nite but i got the damn flu and just did'nt want to get out of bed.

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