Got it.  Thanks for the information.  I am searching for a full centrifugal advance Y-Block distributor.

Read This - https://www.ctci.org/mallory-distributor/

My understanding is the HOLLEY vacuum advance can be blocked off. Any chance I have this right?

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purchased the holley cent advance only on eBay ,instaled on 55 mer 292 it works well(has dual points.no vacume lines. never asked him about fuel  consumption. only comet  was what a difference from loadematic

Florida_Phil:  This one will work fine as is because it's geared for a Ford Y-block. Usually these iron truck stribs with governor ports are for Lincoln Y-blocks.  That being said, I have replaced the Lincoln driven gear with a Ford Y-block gear pined in the proper position and they work well. That is, if you don't mind an iron strib. The governor ports can simply be plugged and these stribs use the standard Ford 8 cylinder cap. It has the typical Ford points so Pertronix shouldn't be an issue either.  Not sure what degree advance cam is in it but you would have to deal with that later if need be. This one seems to be in excellent condition, rebuilt or new?   It's not mine and I don't know the seller but if I can be of further help, let me know.   JEFF...........                  .https://www.ebay.com/itm/1960-1963-FORD-F-500-F-600-F-700-TRUCK-292-V8-DISTRIBUTOR-REMAN-FOMOCO/142030720713?epid=1678249551&hash=item2111b0cec9:g:3xAAAOSwnFZXXG2F


64F100 57FAIRLANE500

The MSD 8383 distributors can be used with or without vacuum advance.  Paper work that comes with the distributor shows how to adjust for different curves with or without vacuum.

I have run my 1957 Ford distributor both with and without the vacuum advance connected.  Drivability and idle seem to be better with the vacuum line connected. There is no difference in total advance.  The issue is clearance with the FM255 dual quad manifold. I suspect I can engineer around that by relocating the distributor and wires.  It would be nice if someone made a "HiPo Style" Y-Block distributor without vacuum advance.   I guess not.

purchased the holley cent advance only on eBay ,instaled on 55 mer 292 it works well(has dual points.no vacume lines. never asked him about fuel  consumption. only comet  was what a difference from loadematic

The advertisement that was shown shows a model for 55/56 LOM (D-1527AA). Maybe being completely centrifugal was the way to get around LOM?

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It is a dual advance distributor! See that brass fitting? I run one on a 322" Y, Very good unit.




"FREE SAMPLE"

I would think relocating the orientation of the distributor to move the vacuum can would be the best. But if you aren't tuning for mileage and just want mechanical advance why not just remove the vacuum unit and lock the advance plate in place?

It is a dual advance distributor! See that brass fitting? I run one on a 322" Y, Very good unit.

The poster described his for a 55 as with no vacuum signal. If you notice on the ad, there are several models listed for different applications. The service manual I showed was for reference only. It does not cover the LOM replacements.




What I am wondering is did the 55/56 model (D-1527AA) come thru centrifugal only or did the vacuum source need modification? Most likely will have to find an original catalog.

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