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Fuel pump swap question
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Thread: Fuel pump swap question

  1. #1

    Join Date
    Jul 2006
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    Toronto, Ontario
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    28

    Fuel pump swap question

    woo hoo, more newbie questions!!!

    Quite a few people have told me to ditch the mech. Fuel pump and go electric, and I agree, but my questions are:

    What do I do with the mech fuel pump in the block (I am currently rebuilding a 360)

    What fuel pump would you suggest? (I am running a Holley 650 4 barrel)

    and would I need a pressure regulator? if so what pressure?

  2. #2
    Thank you from BT ULTIMUS MAXIMUS STATUS tufcj's Avatar
    Join Date
    Apr 2004
    Location
    Watkins, CO
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    2,864
    If you're not experiencing fuel starvation, why swap?

    Carter makes a replacement high volume mechanical. I ran one on my CJ until I went EFI (360 w/600 CFM), and run one on my AMX 390 w/750 carb. I don't have any problems with starvation.

    If you go to an electric pump, you can use a small block Chevy block off plate, the shape is the same. You will need to mount an electric pump as close to the tank as possible, they're designed to push fuel, not draw. Use a pump that's rated around 6-7 PSI, and install a regulator near the carb to hold pressure around 6PSI. You may need to readjust your float levels in the carb.

    Bob
    tufcj
    1969 AMX
    1967 Rambler Rogue

    If you need a tool and don't buy it...
    you'll eventually pay for it...
    and not have it.
    Henry Ford

  3. #3
    Thank you from BT Tech Master Bulltear Forum
    Join Date
    Jan 2003
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    In a Half Dark world now a days
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    I have the carter mech pump now runs 6 psi all the time with a 850 DP

    best ever 11.669 @ 112.33 mph in 1/4 mile on 33 x 10.50 slicks and 4" lift / 7.358 @ 93.03 mph in the 1/8 mile

  4. #4

    Join Date
    Jul 2006
    Location
    Toronto, Ontario
    Posts
    28
    Cool, I will look into a carter pump

    Thanks

  5. #5

    Join Date
    Jul 2005
    Location
    S.W. WA
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    692
    I like the thought of an electric pump, I've never owned an AMC that could sit for more than a week without needing the carb primed.
    1969 Rebel 401 TH400
    1978 J10 401, QT
    1978 Wag 401 QT
    1973 Javelin AMX in pieces.

  6. #6

    Join Date
    Jul 2006
    Location
    Toronto, Ontario
    Posts
    28
    I have heard of people having issues when climbing hill at low idle so, the engine would starve and shutdown and stall.

    So by using an electric fuel pump, it would solve the low idle bog issues

    To get by it I just used a manual choke and would throw some choke into the mix if I was climbing an incline.

    But I wanted to hear what solutions other AMC'ers have come up with for climbing inclines at low idle

  7. #7
    Quote Originally Posted by Bam Bam
    I have heard of people having issues when climbing hill at low idle so, the engine would starve and shutdown and stall.

    So by using an electric fuel pump, it would solve the low idle bog issues

    To get by it I just used a manual choke and would throw some choke into the mix if I was climbing an incline.

    But I wanted to hear what solutions other AMC'ers have come up with for climbing inclines at low idle
    Climbing and fuel issues should be float/fuel bowl related and not a pump issue.

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