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    Author Topic: 650 carb on a 383  (Read 3198 times)

    Offline Rare_T_A

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    650 carb on a 383
    « on: May 12, 2008 - 10:48:43 AM »
    I have a 750 Holley on the RR ans it seems to run rich. The car run perfict but the tail pipse are black. I've tried jets and differet power valved but the black pipes are still there. Right now I have a 750 Carter on it but I haven't driven it enough to see it it's leaner yet. I also bought a 650 DBL pumper off ebay last week. Do you guys have a thought if it may be to small on the 383? 
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    Offline Chryco Psycho

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    Re: 650 carb on a 383
    « Reply #1 on: May 12, 2008 - 11:39:17 AM »
    A 750 Holley is perfect on a 383 , judging mixture by the tips will not work
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    Offline HemiOrange70

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    Re: 650 carb on a 383
    « Reply #2 on: May 12, 2008 - 11:53:41 AM »
    How are your plugs?
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    sleepychallenger

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    Re: 650 carb on a 383
    « Reply #3 on: May 12, 2008 - 01:40:26 PM »
    i still run the factory 625 CFM carter, seems to do good.
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    Offline FJ5_440

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    Re: 650 carb on a 383
    « Reply #4 on: May 12, 2008 - 01:54:56 PM »
    Although I agree that a 750 would be ideal, I ran a 650 double pumper and a pair of headers on a stock 69 Roadrunner 383 for years.  It ran pretty hard, and never gave me any trouble. 
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    ** Shane **

    Offline Rare_T_A

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    Re: 650 carb on a 383
    « Reply #5 on: May 13, 2008 - 09:02:25 AM »
    Quote from: HemiOrange70 on May 12, 2008 - 11:53:41 AM
    How are your plugs?

    I just changed the plugs last weekend and they were black also.
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    '09 Challenger R/T  5.7 HEMI Auto
    '70Challenger T/A 340 727

    Fargo, N. Dak.
    My web Site:  http://freiss.co.nr

    My Flikr Page: http://www.flickr.com/photos/102813164@N04/

    I was born with nothing and I still have most of it left!

    Offline Chryco Psycho

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    Re: 650 carb on a 383
    « Reply #6 on: May 13, 2008 - 10:36:43 AM »
    ok so you are rich , check the metering block gasket first for  leak into tthe power valve & check the float levels , make a note of the jet size as well you should be in the 68-72 range
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    sleepychallenger

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    Re: 650 carb on a 383
    « Reply #7 on: May 13, 2008 - 12:10:46 PM »
    how do you check the jet size?
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    Offline MEK-Dangerfield

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    Re: 650 carb on a 383
    « Reply #8 on: May 13, 2008 - 07:22:43 PM »
    Quote from: sleepychallenger on May 13, 2008 - 12:10:46 PM
    how do you check the jet size?

    You have to remove the fuel bowl from your carb to see what's in there as far as jets.
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    Mike

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    sleepychallenger

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    Re: 650 carb on a 383
    « Reply #9 on: May 13, 2008 - 07:23:57 PM »
    are they marked? i have taken the top of the carb off (Carter) and can see the jets, but dont know what size they are.....  :feedback:
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    Offline MEK-Dangerfield

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    Re: 650 carb on a 383
    « Reply #10 on: May 13, 2008 - 07:27:26 PM »
    Assuming Carter jets are like Holley's, there is a number punched into them to tell the size. You need to remove them to see it though.
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    Mike

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    Offline Chryco Psycho

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    Re: 650 carb on a 383
    « Reply #11 on: May 14, 2008 - 02:05:32 AM »
    Carter / Eddy have the # stamped into them but approx 1/10 the size good luck seeing the #
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    sleepychallenger

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    Re: 650 carb on a 383
    « Reply #12 on: May 14, 2008 - 04:56:58 PM »
    better get my magnifying glass out...  :banghead:
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    Offline Challenger_7

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    Re: 650 carb on a 383
    « Reply #13 on: May 15, 2008 - 10:18:29 AM »
    Would these be the jets?
    I stripped my Holley and got it running v nicely after a thorough clean up, but have no clue of its size. How would one know.
    It is fixed on a 400 engine and really performing very well.
    Is there a Holley chart with all the relevant numbers on it.
    Is the CFM constant with the jet sizes, or one can have a certain CFM and still play around with the jets?
    Mine have a 582 stamped on them. What does that mean?
    Cheers
    « Last Edit: May 15, 2008 - 10:20:32 AM by Challenger_7 »
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    Offline Chryco Psycho

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    Re: 650 carb on a 383
    « Reply #14 on: May 15, 2008 - 11:05:43 AM »
    the jets are 58 the 2 is upside down & is a close tolerance jet
    I would also replace the power valve as it a cheap aftermarket one not Holley
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