1970 GT350 distributor

[J_Speegle]

Another source (if or if not those are always followed) is the dist vacuum diagrams Ford published in some fo thier manuals such as the 69 Emission manual or on some sites 

[Bob Gaines]

Just to further clarify (since our discussion has expanded) , I believe this is correct:

1969 GT350 4spd  used a single vacuum advance
1969 GT350 Automatic  used a single vacuum advance

1970 GT350 4spd  used a dual vacuum advance
1970 GT350 Automatic  used a dual vacuum advance

1969 GT500 4spd  used a dual vacuum advance
1969 GT500 Automatic  used a single vacuum advance

1970 GT500 4spd  used a dual vacuum advance
1970 GT500 Automatic  used a single vacuum advance

I hope Mr Gaines can proof read that.  The big block information seems to be inline with the Cobra Jet forum information and Shelby did not change big block distributors to the best of my knowledge.

Even though the 70 GT500 distributors had the same type of vacuum advance compared to 69 I don't think the BB distributors were edited. I thought they were changed out to the 70 models distributors because they were 70 emissions compliant compared to 69.  Maybe the 69 GT350 distributors were edited because there was no 70 emissions 351 W compliant distributor on the shelf. In the case of the GT500 there was a 70 compliant distributor that could be changed to make the engine emissions compliant. Just some thoughts.

[Special Ed]

I have a letter here of the list of things to change over at kk plant where the 70 shelbys were converted from 69 to 70 models in fall of 69. I talked to some of the workers who did some of the work on the 70 shelbys at KK and they even had to changeout some of the batteries from unsold cars that were built early in production because back then u had to keep adding water to the batteries. They said they couldnt sell a new car with an old battery in it as part of the warranty. Remember some of these cars sat around for a year or so before being sold.  The 70 gt 500s had distributors changed out to the new 70 cj distributors with dozf #s and they were date coded sept 69 and years ago i got some nos leftover dozf dual point distributors that came out of kk plant. The 70 gt500 4-speed distributors had a hard to find dual point wide gold band vaccum advance that had a different arm bend to attach to the unique higher dual point plate and unique dual point cam lobe. The dual points sit up about 1/4'' higher than single points and have a unique orange boot wire that routes out the side of distributor in a different hole location that is closer to the vaccum advance. That hole location is how u can tell a fake from a real dual point restamped distributor. Years ago these fake  restamped dual point 70 cj and boss distributors stated showing up after they repoed the dual point plate and cam rotors imagine that huh!!!

[Coralsnake]

Thank you to everyone that clarified the 1970 GT 500 distributor questions

[shelbymann1970]

Thank you to everyone that clarified the 1970 GT 500 distributor questions

+1

[Coralsnake]

Sometimes I'm slow...

Were the DOZF-G distributors for the 1970 CJ automatic cars single or dual vacuum advance??

[Rickmustang]

Single.

[shelbydoug]

I have a letter here of the list of things to change over at kk plant where the 70 shelbys were converted from 69 to 70 models in fall of 69. I talked to some of the workers who did some of the work on the 70 shelbys at KK and they even had to changeout some of the batteries from unsold cars that were built early in production because back then u had to keep adding water to the batteries. They said they couldnt sell a new car with an old battery in it as part of the warranty. Remember some of these cars sat around for a year or so before being sold.  The 70 gt 500s had distributors changed out to the new 70 cj distributors with dozf #s and they were date coded sept 69 and years ago i got some nos leftover dozf dual point distributors that came out of kk plant. The 70 gt500 4-speed distributors had a hard to find dual point wide gold band vaccum advance that had a different arm bend to attach to the unique higher dual point plate and unique dual point cam lobe. The dual points sit up about 1/4'' higher than single points and have a unique orange boot wire that routes out the side of distributor in a different hole location that is closer to the vaccum advance. That hole location is how u can tell a fake from a real dual point restamped distributor. Years ago these fake  restamped dual point 70 cj and boss distributors stated showing up after they repoed the dual point plate and cam rotors imagine that huh!!!

WHO is the source of those dual point plates and point cams? I could only find them from Perogie who promptly reamed me on the price, but that was to be expected, considering the source.

They were the only ones with any kind of stock on them.



An academic point on that subject. There is more then one point cam. The B2 has a different advance notch in the pitchfork then the 351c does.
The B2 is a 10 degree notch. The 351c is  a 12 or 15 degree notch.
The B9 has it's own distributor listing and might have another variant?
I don't know about the 428 point cam since I have never seen one but I would assume it is unique to the 428 as well?

There were Motorcraft service part numbers on the two that I have, the B2 and 351c, but they are long obsolete.


The points plate seem to be the same though with no part numbers showing on mine but stamped MOTORCRAFT not AUTOLITE as I would have expected.

I think that the weird dual vacuum advance part with the yellow cad center strap is the same though? It's stamped with a something 6. Can't read the first character on mine.

The odd thing that I found was that the arm where attached to the plate has no fastening c clip. It just humps the stud on the plate. 

[shelbymann1970]

So thanks to Bob Zinc finding this survivor air 4 speed GT350 vert he was good enough to take an engine shot. Dual vacuum advance on an air 4 speed 70 GT350.