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Distributor 1967 to 1974 Application Info

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railroad View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote railroad Quote  Post ReplyReply Direct Link To This Post Posted: Nov/14/2017 at 1:19pm
Good information!  Thanks!!
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ccowx Quote  Post ReplyReply Direct Link To This Post Posted: Nov/19/2017 at 11:47am
I have a distributor #111106 and date coded 6M15, which I believe is Dec 66. It has a pole piece #724. I suspect it is out of a 67 290.

Chris   
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DoughertyAMX Quote  Post ReplyReply Direct Link To This Post Posted: Feb/16/2018 at 8:27pm
My car being a very early build 70 390 AMX, it came with the dual vacuum advance. I'm sure after 50 years it is shot, and don't believe they are available anywhere.  What are others doing in this case, just replacing it with the single line vacuum advance?

1111987 distributor 9F30 is the date code on it, whatever that number means


Edited by DoughertyAMX - Feb/16/2018 at 8:48pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote toolmanxiii Quote  Post ReplyReply Direct Link To This Post Posted: Apr/04/2018 at 12:53am
dual points were to reduce point bounce at high rpm . never saw any in AMC / but did in my 340 cuda. but redline was 7500 from factory . what engine is it off? 
71 360 Hornet sst 83 2wd 360/727 Eagle wagon (crashed)
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ccowx Quote  Post ReplyReply Direct Link To This Post Posted: Apr/04/2018 at 1:35am
There was an AMC dual point distributor, if you went the dealer installed route. Some dual point designs reduced point bounce and others were to increase the dwell time for each firing. The AMC unit was built by Mallory and reduced point bounce.

I think the poster above is actually not referring to points but to the dual diaphram vacuum unit that was used in 1970 model year 390's produced before September 26/69.

Chris
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Post Options Post Options   Thanks (0) Thanks(0)   Quote toolmanxiii Quote  Post ReplyReply Direct Link To This Post Posted: Apr/04/2018 at 1:55am
Originally posted by target target wrote:

I have a distributer part # 1111988. Coded 0B18. Has duel points. That normal?

 sorry this is the one I was answering 

71 360 Hornet sst 83 2wd 360/727 Eagle wagon (crashed)
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ccowx Quote  Post ReplyReply Direct Link To This Post Posted: Apr/04/2018 at 2:04am
You are right, my mistake!

It is interesting though, the part # looks like an AMC/Delco distributor number, but they did not have dual points. Wonder what it is?

Chris
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Post Options Post Options   Thanks (0) Thanks(0)   Quote toolmanxiii Quote  Post ReplyReply Direct Link To This Post Posted: Apr/04/2018 at 8:16am
Originally posted by DoughertyAMX DoughertyAMX wrote:

My car being a very early build 70 390 AMX, it came with the dual vacuum advance. I'm sure after 50 years it is shot, and don't believe they are available anywhere.  What are others doing in this case, just replacing it with the single line vacuum advance?

1111987 distributor 9F30 is the date code on it, whatever that number means

Motorcraft(Ford) still had dual advance diaphragms for sale that they used from early 50's to early 70's
is there any other markings to identify manufacturer ?

https://www.cjponyparts.com/scott-drake-distributor-vacuum-advance-dual-v8-1968-1971/p/DVA3/

71 360 Hornet sst 83 2wd 360/727 Eagle wagon (crashed)
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Post Options Post Options   Thanks (0) Thanks(0)   Quote PHAT69AMX Quote  Post ReplyReply Direct Link To This Post Posted: Apr/06/2018 at 5:40pm
Fri Apr 06, 2018, Chart Updated  Add (1) Pole Piece # for 111106
Thank You ccowx for the 111106 Pole Piece info, and all others.

DoughertyAMX:
I was unable to find any Dual Diaphragm Vac Advance availability
or even any obsolete aftermarket "Interchange" part no. info...
1970 390 Dual Diaphragm Vacuum Advance Canister:
Vacuum Advance AMC Part # = 1973426, Last 3 appear on Unit.
Do you already have the SPECS for that Original Dual Vac Adv Can?

The Dual Point question:
Hmmm, wonder if the "Point Plate" from a Dual-Point CHEVY
Delco Distributor was used by an innovative AMC Hot Rodder
in his AMC Casting Delco Distributor?
Although, as previously pictured, completely different configuration
between the two PLATES in terms of the Single Point Plate...
Would be surprised if the Mallory Point Plate would fit?


Edited by PHAT69AMX - Apr/19/2018 at 11:56am
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Post Options Post Options   Thanks (0) Thanks(0)   Quote billd Quote  Post ReplyReply Direct Link To This Post Posted: Apr/06/2018 at 5:54pm
Originally posted by toolmanxiii toolmanxiii wrote:

dual points were to reduce point bounce at high rpm . never saw any in AMC / but did in my 340 cuda. but redline was 7500 from factory . what engine is it off? 


Dual points were to increase DWELL time and coil charge time, not to do with point bounce..
It helped saturate the coil for a longer spark at high RPM when the dwell TIME (NOT degrees) was short.
Dual points allowed higher RPM engines to have a more saturated coil as it allowed the coil to "charge" longer (time, not degrees)
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