DUAL POINT SYSTEM OR STAY WITH ELECTRONIC

Discussion in 'F-250 and F-350 General Tech and Info' started by SPORTSMAN, Oct 19, 2018.

  1. SPORTSMAN

    SPORTSMAN Junior Member

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    94 F350--Carb---trying to get rid of the electronic system and go to the dual point system with vacuum advance---any suggestions on the best systems to do this-----going with the whole system---coil---wires---cap---distr-----all of it----will this work yes or no---is it better as far as breaking down and easier to fix--anything will help-----
     
  2. Roush PSD Interceptor

    Roush PSD Interceptor Straight Piped Diesel Staff Member

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    I know people have replaced points style systems with Pertronix electronic points
    in older 351W motors.
    I've done this on my 1974 360 FE.

    I can understand you wanting do go around the "Duraspark" system currently in place on your 1994.

    I'll do some researching on what is available for such a conversion.
     
  3. SPORTSMAN

    SPORTSMAN Junior Member

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    Iam wanting to replace the electronic type that's in there with older dual points system
     
  4. Roush PSD Interceptor

    Roush PSD Interceptor Straight Piped Diesel Staff Member

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    @SPORTSMAN

    So in researching the TFI distributor can be replaced with a carb type one (points style).

    The difference is in the oil pump drive shaft length and or the drive gear.

    In some distributors the oil pump driveshaft is too long and must be shortened.
    Depending on which distributor you get the drive gear may be a different size
    than the TFI distributor you pulled out. The old drive gear must be pressed off the original
    distributor and pressed onto the replacement distributor.

    This a pic of the TFI distributor (Electronic)

    1994 F350.png

    This is a pic of a possible points style
    distributor you want.

    1994 F350 2.png

    Pay close attention to the drive gear size and the length of the oil pump drive
    with a hollow dog inside the bottom of the distributor shaft.

    Me personally having fought points style systems over the years I replaced
    mine with a Pertronix kit and kept the points as a backup in case the
    Pertronix failed (Never has in 26 years).
    Also put Pertronix in my straight 6
    Mercruiser boat engine, no moisture to
    foul points any more, even after spraying with WD40 they would still foul.

    You can get a HEI type distributor that has the coil built into the top of the cap,
    but I always liked the separate coil setup.
     
    Last edited: Oct 20, 2018
  5. Roush PSD Interceptor

    Roush PSD Interceptor Straight Piped Diesel Staff Member

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    Best of both, getting the TFI distributor out
    and the "Durasark" spark box delete, but
    using electronic Pertronix points instead of a dual points mechanical breaker points.

    I haven't seen a dual mechanical points distributor for
    a 351W, not saying they don't exist, just I've not seen one.

    When I worked as manager in training at the big chain parts store
    we sold a lot of those Ford spark boxes due to failure from the factory OEM
    supplier.
     
  6. SPORTSMAN

    SPORTSMAN Junior Member

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    Yea they are out there ---I've seen few on ebay and amazon but thinking of going with the all in one unit electronic Pertronix points----I'am still doing research but ain't in no hurry right now to do anything but soon----
     
    Roush PSD Interceptor likes this.

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