I have a 72 cutlass with the 350 w/air and can't find a distributor vacum control switch.It is located behind the oil filler tube and has 3 vacum ports and an electrical device on top with 2 prongs.Where can I get one? I looked at autozone and advance.Is there an after market source? Thanks

 

I've never seen those for sale at parts places, see the NOS (very expensive) and used on evilbay.
You could try posting in the parts wanted section here.

 

Unless you're going for a 1000-point restoration or your state's emissions laws require it, forget about it and use a normal and easily found 3-port DTVS without the electrics. All the electrics do is eliminate vacuum to distributor until the car is in high gear. If it or the switch on the transmission end is bad, performance and gas mileage will suffer.

 

X2 on what's been said.

 

That part is available from any parts store...it just looks different from the GM part.

 

Have you bought one?
Got a pic or can you take and post a pic of it if you have one?
I checked all the parts stores and nobody had one around here or online.
They do have the other type without the electrics.

Do you know the parts store's name and address that had it?

 

I have a pic of the control,but have not found it, here is the pic.Where can I get something that will work?

 

Get one for a 69-70 or 73-75 Olds 350/455, or any that has C (carb) port, D (distributor) port, and M or MT (manifold vacuum) port.

The VENT port on the vac-electric one goes back into the carb air horn right next to the choke hot air stove intake. It vents vacuum to that area whenever the electrics tell it car is not in high gear, instead of allowing vacuum to the distributor vacuum advance.

The electric terminals connect to a switch on the transmission that senses when the trans is in high gear. If that permissive is satisfied, the electric solenoid in the DTVS will move the "pill" inside it and allow vacuum to pass from C port to D port.

If coolant temp gets up to around 258 or so, the DTVS will shut off the C port and open the M or MT port to the D port. This allows manifold vacuum to the vacuum advance, which advances the timing and in turn cools the engine.

 

Check Standard Automotive Products on the web. They make a LOT of the aftermarket DTVS and related parts. Look under Emission control section. Found mine there.

Mike

 

I looked on the web,but did not see anything about standard automotive products company,what is there web site?