distributor identification
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Junior User
Joined: Sep 2016
Posts: 95
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From: MA
Ok thanks for clarifying. Is the rotor the same for all of the caps? The prices for the caps are all over the map. I've seen some like this:
https://www.summitracing.com/parts/s...FZWIswodwUQEUw
and some for upwards of $70.00. Is the quality that much different? I've had good luck over the years with aftermarket distributor caps and rotors.
https://www.summitracing.com/parts/s...FZWIswodwUQEUw
and some for upwards of $70.00. Is the quality that much different? I've had good luck over the years with aftermarket distributor caps and rotors.
Thread Starter
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Junior User
Joined: Sep 2016
Posts: 95
Likes: 1
From: MA
I did a google search using those part numbers and some of them came up as a 1974 cap. Just so I am clear on what I have, is the distributor that I showed in the pictures an original 1967 that came with points/condenser and was converted to different internals, or is that a later model electronic distributor that was taken from another engine? If it is an original converted to electronic, does the conversion also change the cap to a different part number or does the cap and rotor stay the same.
Thanks
Thanks
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 783
From: Simi Valley, CA
I did a google search using those part numbers and some of them came up as a 1974 
cap.
Just so I am clear on what I have, is the distributor that I showed in the pictures an original 1967 that came with points/condenser and was converted to different internals, or is that a later model electronic distributor that was taken from another engine? If it is an original converted to electronic, does the conversion also change the cap to a different part number or does the cap and rotor stay the same.
Thanks
cap. Just so I am clear on what I have, is the distributor that I showed in the pictures an original 1967 that came with points/condenser and was converted to different internals, or is that a later model electronic distributor that was taken from another engine? If it is an original converted to electronic, does the conversion also change the cap to a different part number or does the cap and rotor stay the same.
Thanks
The cap (it was black originally) is the same 1957/74 V8's (except HiPo's): B7A-12106-A has female ends.
1957/74 HiPo & 1975/76 cap (it was blue originally and called a H/D, replaced the 1957/74 B7AZ-12106-A brown HiPo cap): D5AZ-12106-A has female ends.
1977: Ford introduced new I-4/I-6/V6/V8 caps with male ends, also required was an adapter that was located below the cap that the cap clipped to.
You can use either B7A-12106-A or D5AZ-12106-A dizzy caps on your 1967 F350 352, because the cap it has now...has female ends.
Cargo Master
Joined: Feb 2006
Posts: 3,008
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From: North Pole, Alaska
Post Fiend
Joined: Apr 2002
Posts: 19,311
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From: Waterloo, Iowa
So long as the distributor innards and vacuum advance aren't all clapped out it will be about as good as it gets with a pertronix module installed. Keep a set of points and condenser in the glovebox and if the module were to die out on the road or wherever, can get going again in a few minutes. Backwards compatibility.
Cargo Master
Joined: Mar 2002
Posts: 3,132
Likes: 217
From: W (BY GOD) V
Ok thanks for clarifying. Is the rotor the same for all of the caps? The prices for the caps are all over the map. I've seen some like this:
https://www.summitracing.com/parts/s...FZWIswodwUQEUw
and some for upwards of $70.00. Is the quality that much different? I've had good luck over the years with aftermarket distributor caps and rotors.
Listen...
The PN's you now have are correct for your application. You want (IMO) only MOTORCRAFT service parts at a minimum w/o going to aftermarket HI-PO.
The trick is to stay away from dealers ($$$) and use the MOTORCRAFT (short no) to search for pricing, i.e. AMAZON.
D7TZ 12106-A - Use PN DH-370
D5PZ 12200-A - Use PN DR-5-B
E5PZ 12259-GR - Use PN WR-3820-DR
I am dead serious sorry I confused you. It's an old guy issue, that and having my head up my butt.
Cargo Master
Joined: Mar 2002
Posts: 3,132
Likes: 217
From: W (BY GOD) V
You know, the FORD P&A System (MOTORCRAFT either) is not all that hard to fathom once you understand it. You would be surprised (I was) with the number of counter-persons who do not know/understand the system.
CRS Update-
Let me allow to add to the confusion here. The wire set PN you have (and it is the correct Service Part Number) is a universal set. It is designed to fit more than one engine series other than the FE, those being the 335 and 385 Series. That being said, if you want the original look (cleaner), look for a quality RE-PRO set C5AZ 12259-F wires (AUTOLITE - MOTORCRAFT).
These were the hot lick back in the old days and even had spark plug heat shields on them.
CRS Update-
Let me allow to add to the confusion here. The wire set PN you have (and it is the correct Service Part Number) is a universal set. It is designed to fit more than one engine series other than the FE, those being the 335 and 385 Series. That being said, if you want the original look (cleaner), look for a quality RE-PRO set C5AZ 12259-F wires (AUTOLITE - MOTORCRAFT).
These were the hot lick back in the old days and even had spark plug heat shields on them.
Last edited by KULTULZ; Jun 12, 2017 at 11:42 AM. Reason: ADDING TO THE CONFUSION
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Hotshot
Joined: Mar 2013
Posts: 14,255
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From: Phoenix, Az.
Cargo Master
Joined: Mar 2002
Posts: 3,132
Likes: 217
From: W (BY GOD) V
Fact of the matter is I am getting long in tooth.
I saw the photo of the blue cap and I immediately thought of D5AZ-A forgetting entirely of it's being superseded by D7TZ.
I could never accept the gray trimmed engines...
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
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From: Simi Valley, CA
I'm older than you are, but you're older than JEFFFAFA and probably many other members of this forum.
1973/79 Ford Passenger Car Parts Catalog, final printing 11/88: It doesn't say that D7TZ-12106-A replaced D5AZ-12106-A
What is does say: D5AZ-12106-A Dizzy Cap (female ends): 1975/76 V8's.
E2ZZ-12106-A Dizzy Cap (male ends) & E2ZZ-12A217-A Dizzy Cap Adapter: 1977/79 V8's.
I don't see how you can use a 1977 and later V8 male end dizzy cap that uses an adapter that the dizzy clips to...in place of a 1976 and earlier female end V8 dizzy cap.
Edit: I just spoke with JEFFFAFA, D7TZ-12106-A did replace D5AZ-12106-A (according to his 1989 O-S-I catalog).
But...even though this dizzy cap has a 1977 part number, it has female ends.
Typical FoMoCo confusion.
1973/79 Ford Passenger Car Parts Catalog, final printing 11/88: It doesn't say that D7TZ-12106-A replaced D5AZ-12106-A
What is does say: D5AZ-12106-A Dizzy Cap (female ends): 1975/76 V8's.
E2ZZ-12106-A Dizzy Cap (male ends) & E2ZZ-12A217-A Dizzy Cap Adapter: 1977/79 V8's.
I don't see how you can use a 1977 and later V8 male end dizzy cap that uses an adapter that the dizzy clips to...in place of a 1976 and earlier female end V8 dizzy cap.
Edit: I just spoke with JEFFFAFA, D7TZ-12106-A did replace D5AZ-12106-A (according to his 1989 O-S-I catalog).
But...even though this dizzy cap has a 1977 part number, it has female ends.
Typical FoMoCo confusion.
Hotshot
Joined: Mar 2013
Posts: 14,255
Likes: 199
From: Phoenix, Az.
Typical FoMoCo confusion all right. I can't tell you how many gazillion times I've told a customer that sometimes being a Ford Parts Man you have to do some Sherlock Holmes work to look up or figure out the correct number.
Cargo Master
Joined: Mar 2002
Posts: 3,132
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From: W (BY GOD) V
I am wondering (as I often do as I watch a striked match) why the service upgrade to the D7TZ from the D5AZ. Was it for a design purpose or was it just done to have the cap match the new corporate engine trim color (gray) which I hated BTW.
And while you have your OSI out, can you trace the B7AZ 12106-A -NR-NS-RB- in it's relation to D5AZ? It may require an earlier issue.
I believe it's main usage was on transistor ignition systems on the HD truck engines of the period mainly but TI was carried until about the 1967/68 car model tuns. It was also used on HP TI systems.
And while you have your OSI out, can you trace the B7AZ 12106-A -NR-NS-RB- in it's relation to D5AZ? It may require an earlier issue.
I believe it's main usage was on transistor ignition systems on the HD truck engines of the period mainly but TI was carried until about the 1967/68 car model tuns. It was also used on HP TI systems.
Hotshot
Joined: Mar 2013
Posts: 14,255
Likes: 199
From: Phoenix, Az.
The questionable years here are 75/77. So I 1st went to my Dentside 73/79 F100/500 slide. Here I have the up to 1976 360/390 and 1977/ 351M/400 applications. As you know, Ford never changed the Dizzy diameter of the cap's mounting surface between the V8's 1957 to the end of Dizzys. It shows the following as stated on the Oct 1988 final issue as stated. Not tracking any later part number changes yet.
73/74 F100/350 360/390 taking B7A12106A (not B7AZ) (DH6)
75/76 F100/350 360/390 taking D5AZ12106A (DH354)
**
Next I went to 351M
75/76 B-F500 (what?!?!) 351M with CAL. em. D5AZ12106A. Points Dizzy.
77 B-F500 351M with and w/o CAL em. taking D7TZ12106A and a matching (prolly gray also) D7TZ12200A rotor. Still a points Dizzy.
77/79 F100/350 351M taking the 2 piece cap with male terminals.
**
My Jan 1989 O.S.I. slide shows both:
B7AZ12106A r/b D5AZ12106A.
D5AZ12106A r/b D7TZ12106A.
Currently my Ford computer on DOW shows:
B7A12106A r/b D7TZ12106A.
**
My 49/59 Car slide shows B7A12106A fitting 57/59 Ford and T-Bird all V8's. No mention of B7AZ12106A.
My 60/64 Car slide shows B7A12106A fitting V8's w/o transistorized ignition. B7AZ12106A fitting V8's with it.
73/74 F100/350 360/390 taking B7A12106A (not B7AZ) (DH6)
75/76 F100/350 360/390 taking D5AZ12106A (DH354)
**
Next I went to 351M
75/76 B-F500 (what?!?!) 351M with CAL. em. D5AZ12106A. Points Dizzy.
77 B-F500 351M with and w/o CAL em. taking D7TZ12106A and a matching (prolly gray also) D7TZ12200A rotor. Still a points Dizzy.
77/79 F100/350 351M taking the 2 piece cap with male terminals.
**
My Jan 1989 O.S.I. slide shows both:
B7AZ12106A r/b D5AZ12106A.
D5AZ12106A r/b D7TZ12106A.
Currently my Ford computer on DOW shows:
B7A12106A r/b D7TZ12106A.
**
My 49/59 Car slide shows B7A12106A fitting 57/59 Ford and T-Bird all V8's. No mention of B7AZ12106A.
My 60/64 Car slide shows B7A12106A fitting V8's w/o transistorized ignition. B7AZ12106A fitting V8's with it.
Cargo Master
Joined: Mar 2002
Posts: 3,132
Likes: 217
From: W (BY GOD) V
My Jan 1989 O.S.I. slide shows both:
B7AZ12106A r/b D5AZ12106A.
D5AZ12106A r/b D7TZ12106A.
Currently my Ford computer on DOW shows:
B7A12106A r/b D7TZ12106A.
**
My 49/59 Car slide shows B7A12106A fitting 57/59 Ford and T-Bird all V8's. No mention of B7AZ12106A.
My 60/64 Car slide shows B7A12106A fitting V8's w/o transistorized ignition. B7AZ12106A fitting V8's with it.
B7AZ12106A r/b D5AZ12106A.
D5AZ12106A r/b D7TZ12106A.
Currently my Ford computer on DOW shows:
B7A12106A r/b D7TZ12106A.
**
My 49/59 Car slide shows B7A12106A fitting 57/59 Ford and T-Bird all V8's. No mention of B7AZ12106A.
My 60/64 Car slide shows B7A12106A fitting V8's w/o transistorized ignition. B7AZ12106A fitting V8's with it.
Now I know...
Points still in LT up to '78? Did not know that.
I figured all would be Duraspark (Solid State) from 74 on.
Learn something everyday...
THANX FOR CHECKING!