67 switchpitch - how to connect it?

I noticed that previous owner used the orange power cable to power the Holley carburetor instead of switch pitch.

And now I am trying to figure out how to restore it.
But I get confused when i see the wiring diagram.


I have one electric switch with two cables.
I have seen one solenoid on the transmission. Only possible to connect one cable.



According to wiring diagram there are two solenoids?
And i should be able to connect three cables on the electric switch?

Or am i missing an electric box perhaps, between switch and solenoids?
Or just misunderstand the diagram?



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Even if i connect the electric right, the mechanic will not press the electric switch, do i miss some parts or is it installed in a wrong way?

 

Are you sure that is currently a switch pitch tranny? I believe you should have two terminals on the tranny, at 90* to each other. If it was originally a switch pitch (seems likely since you have the throttle mechanism) it may have been converted to fixed pitch during a rebuild...or swapped at some point for a fixed pitch tranny.

 

Well this did not end as expected.

When i was looking for ID on transmission, i accidently took the id on the block.

Google, and it told me that i had a 430 from 1968, not 1967.

I got angry since i remembered that everything was better with the 1967.
(I recently bought hood letters for 1967, they did not fit either.)

So i searched on every part...

Exhaust manifold: 1277139-2 = 1967 with 2" runner for #7 cylinder. (with heat riser thing)
Heads: 1382985 = 1968 + big port, 69cc (big port = stage1?)
Block: 1381625 = 1968
intake manifold: B-1383448-1 = 1968 Riviera?
Carburetor: 80770-1 = 770 cfm holley



But i cannot find anything on the transmission VIN number; 680182661 (close to solenoid)?
Th400 Pan.. (32)(X) stamps ontop.

 

Check the plate on the passenger side of the trans for production date and code - here is a link to the possible codes :

http://www.tpocr.com/buicktc.html

There is a way of externally ID'ing by pan configuration for earlier style filter, etc...you'll have to do web search to see if you can find it.

The micro switch on the linkage shown in your photo isn't the actuation switch, it actually is a back up than engages the converter at idle. The actuation switch is a larger affair with a plunger that is mounted at the manifold bolts with the plunger arm affixed to the carb throttle shaft.

There are also aftermarket control boxes, one of the best if from Bruce Roe who is on this board (search, and he'll come up) - I run one and am very happy with it.

The photo of the single terminal indicates you don't have a SP tranny, but still check the codes and build date - I'm with Larry, someone may have swapped a 68 drivetrain.

Good luck!

 

1978 Cadillac TH400.

I have always thought that my kick down works until recently when some Pontiac friends was talking about connecting their kick downs with electric parts.

I have my switch on gas stage, not connected to anything. I have 1 electric thing on my Cadillac th400. My 67 wiring diagram mentions 2 functions on the switch. variable pitch and downshift solenoid…

Do this mean that I don’t have any kick down at the moment, and that I should do some electric work to connect the switch to the transmission?

 

Yes, But I should have a regular kick down(downshift), and I guess its electric also?

 

Yes. But not connected to anything. If i set power to one wire, and link the other to the transmission solenoid, adjust the throttle linkage, then I should have a working down shift function?

 

Yes. I just not used to these parts and what they are called.

Just studied the wiring diagrams.
But I recognize the switch on your picture from some page in the manual so I will go back and read more about it.

I have no such parts.
Anyone making new kits or do I have to search for used parts?

 

I recognize the dash pot-asm - my friend has one on his Bonneville. What is its function?

So. When I look at the wiring diagram with this new information I realize that the Idle switch, which I call switchpitch switch is connected to the trans control switch, which I am missing. Didnt understand that it illustrated two actual switches. And from my missing trans control switch to the transmission.

Question: If I get a control switch. Do both switches have to be connected to fully work even now when I dont have any switch pitch transmission? Why two switches?

Same switch design even on the 70s 455? I have a newer Quadrajet.

 

The carb connects to the switch for the switch pitch with this linkage:





The wires go to the switch on the throttle arm, and to on to the transmission. Your ST400 transmission 2-prong connector is on the passenger side near the modulator.

 

I found most of the parts in a box. Unfortunately some missing details but happy to have the original brackets.

The small part with question mark besides it (dash pot), what is its function?
Why do my 66 Bonneville friend have vacuum to his? He thinks its a broken cruise control.

 

Is this the switch you are needing? I took it off of a '67 430 in a Riv.
I was going to take it to Bowling Green to sell at the GS Nationals along with some other stuff.



Marv.

 

Thanks. Yes, I might be interested in buying it.


Question: Did Buick use the same type of switch on all models and years between 67-76?
Will this 67 switch match my newer 75-76 carb?

I did a quick search on local stores and found one taken from 65 special, looks almost the same?

 

I have sent you a PM.

Pay for postage and I will send it to you.

Marv.