Vacuum Advance P/N?

Fellows, does anyone have part-number advice on a new (not old stock), vacuum advance, like the DD-190, 12370-5, for TRUCKS?

I'm not sure if those are adjustable through the nipple.

My thoughts are that it would be good to get one that is adjustable, won't hit the breaker plate (like the electronic version did/does) and has a nice fresh diaphragm in it.

I'm aware that they went to a dual nipple style in 72, but my original was the single nipple type.

There might be differences in the rate of advance with these, so a slower truck type might be best. I see the DD-190 from Denis Carpenter is a good deal, but it is listed for lighter vehicles. Mine is a F250/360/2bbl driven gently, with mileage and longevity in mind.

Notes: Please don't hijack this thread with other solutions, re-curving comments, etc. Thanks.
Nope, I don't have the original D-number.
Not interested in other ways to do this... I'll MS it some day.

What say ye?

 

C5AZ-12370-A .. Vacuum Advance (Motorcraft DD-190) / Obsolete

1965/67 Galaxie/LTD 352/390 & F100/350 352 / 1968/69 F100/350 360/390 with dizzy ID numbers: C8TF-12127-H & C8TF-12127-L
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1972 F250/350 360 M/T & C6 with dizzy ID number: D2TF-12127-JA = D2TZ-12370-D .. Vacuum Advance (Motorcraft DD-370) / Obsolete

With dizzy ID number: D2TF-12127-MA = D2TZ-12370-G .. Vacuum Advance (Motorcraft DD-342) / Obsolete

 

The dual diaphragm unit is an emissions unit which uses the second diaphragm to retard the advance curve. Read that as lower performance. VC31 is the Standard part and is adjustable. Just put one on mine (360 F350) in the spring. No complaints. $20 or so. VA's are all the same, they are just a servo. Here's the RockAuto page:
1969 FORD F-100 Distributor Vacuum Advance
Vacuum servo doesn't set the curve, the springs and breaker plate in the distributor do. A lighter spring gets you 'all in' quicker, makes the response snappier and much more pleasant to drive. Slowing down the curve just lowers response, will make the vehicle just feel heavier and weaker and will worsen your mileage. I have been tweaking my F350 for the past year to get it off the peg in a reasonable fashion. Yeah, it still handles like a school bus but it's a dump truck so I'm not going for 1/4 mile times. It's much nicer to jump out into traffic and not bog down. You really do not want a slow ramp on the timing. In fact, you want to advance the initial timing to the 10-12 degree range. That's just a twist of the dizzy. One bolt wonder. So all I did was replace the Vac Advance and set it to the standard position with the internal screw, advanced my initial timing to 10 degrees (12 pinged, the truck is heavy with that dump bed) and now I don't worry about getting rear-ended when I pull out into traffic. 0.02.

 

Thank you Rasputin53, that was the one I was looking for. And ND was correct as usual, you can't find NEW ones with the old numbers. Here are some modern cross-over P/Ns based on a 1969 FE 360.
Caution, numbers are only verified by picture at this point! I will edit when additional information on differences and quality comes up.

CarQuest:Standard Motor Products VC31 (Verified. I installed it.)
Napa: MPE VC970SB, ECH VC970
Advanced Auto V311P, V311
Airtex/Wells: 3P2, 4V1110

I am finding some anecdotal references to a difference in the vacuum advances. And, note the different P/Ns within the Airtex/Wells listing. (Not confusing this with the mechanical advance curve of the weights and springs, nor the action of other parts.) Perhaps beyond the setscrew adjustment inside the nipple, some part numbers may have had different RATES of vacuum-only travel. I'd be very interested in charts that detailed the action of only the Vacuum Advance contribution.

The guys have very detailed reporting and charting over on the Jeep forum for 304 and 360 AMC engines. They are separating the vacuum contribution from the other advance modes. Of course-we aren't rock-crawlers, but our towing needs might figure in a bit.

With all this alcohol in the gas, and some people living at higher altitudes, this could get interesting.

 

Caution: No one has verified the other P/Ns to me.
CarQuest:Standard Motor Products VC31 works on my '72 F250.

 

Thanks for the part number. One more tid-bit of info added to my truck file.