[Question] HEI on a 460
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HEI on a 460

  1. #1
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    Default HEI on a 460

    I’m putting together a new 460 for a build that I’ve got goin and I ran into a slight problem with my distributor hitting the water neck on the intake manifold. I’ve researched online and found a lot of info about it on cars but nothing for boats. Is there a low profile water neck for sale somewhere that I’m not finding? Or do people use the regular truck style with the single big hose fitting and rig it up to work?

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    If you can post a pic of your Distributor and water neck in their positions that would help....I am using a Mallory dist' on my 460....Does your HEI have vacuum advance? (You don't need it on a jet and it may be the point of interference)

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    Default Ford 460 HEI

    The HEI distributor has a larger body and will interfere with Ford water necks. If you want to use a four port by pass
    Thermostat kit to properly control engine temp you will need a distributor with a standard body size. I talk about this on my web site under the cooling link. Jim

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    Do people not run HEI’s on fords? Even with no thermostat?


    Yeah it has a vacuum advance but it’s hitting on the base of the distributor. I’d have to shave an inch off the height of this water neck.
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    That is messed up that they interfere......The manifold raised the height of the thermo mounting surface. It looks like you could possibly have that surface machined down 1/8"...Then possibly machine a groove in the housing, and possibly machine the edge off the distributor.....

    Is there any possibility there is a spacer setup to lift that distributor up a bit? (You would also have to reposition the drive gear lower on the distributor shaft)

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    Perhaps you can use an aftermarket water neck block off plate like this... re-work your hose to a 90 degree AN fitting style?? It looks like the fitting might clear the distributer? I found one on Meziere, but it was only for chevy and mopar.. maybe someone knows where to get for ford, or can weld one up for you like the second pic?
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    Use a small base distributor and there will be plenty of room for the housing.

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    Quote Originally Posted by cvxjet View Post
    That is messed up that they interfere......The manifold raised the height of the thermo mounting surface. It looks like you could possibly have that surface machined down 1/8"...Then possibly machine a groove in the housing, and possibly machine the edge off the distributor.....

    Is there any possibility there is a spacer setup to lift that distributor up a bit? (You would also have to reposition the drive gear lower on the distributor shaft)


    I was considering going through some machining, but looking at everything I don't know if I'd be able to get the inch that I need to get it to work. But then I've wondered about raising the distributor up somehow? Seems like the easier route, just haven't found anything on it yet.

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    Quote Originally Posted by az_mike View Post
    Perhaps you can use an aftermarket water neck block off plate like this... re-work your hose to a 90 degree AN fitting style?? It looks like the fitting might clear the distributer? I found one on Meziere, but it was only for chevy and mopar.. maybe someone knows where to get for ford, or can weld one up for you like the second pic?
    That's an idea. How would I get an inlet and an outlet out of something like that though?

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    Quote Originally Posted by Oldelmn8tr View Post
    Use a small base distributor and there will be plenty of room for the housing.

    Leaning hard towards this solution. Liked the idea of not having to run a coil to clean things up a bit but it might be turning into more of a headache than it's worth.

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