Clean Air Package

[halifaxhops]

Just found this info in the sun cards figured I would share a lot of confusion on it.

 

[dibbons]

What a nightmare. What applications (motors and models and years) use this "technology"?

 

[halifaxhops]

Believe it or not the engines with the breather tube to the air cleaner and pvc valve from what the consensus is.

 

[dibbons]

I believe I purchased a vacuum control valve from slantsixdan awhile back (NOS and its green). I have two '65 A bodies and a '72 B body. Not sure yet which vehicle I will try it on.

CAP/CAS Distributor Vacuum Advance Control Valve

 

[Dana67Dart]

My stock 67 dart 273 2bbl (So Cal car) has one. I believe it to be the OE part as the carb tip is metal vs the 4-5 on ebay that are plastic and it still functions (dad wasn't one to change a part unless it was shot). it has a green spring and the active coil count is the same. there is an adjusting screw on the back to reduce the tension on the spring I suspect that way it can come in at a lower manifold vacuum.

3549895 | eBay

With CAP for 67 273 2bbl initial timing was 5 ATC, without CAP it was 5-10 BTC (manual - Automatic) the dist mechanical advance curve was also difference between CAP and non CAP

Oh the fun of early smog controles. Who remembers smog pumps?

 

[Mattax]

Nice find.
There's a pretty recent thread on CAP.
'66 would be applied to cars sold in California.
'68 model year, all cars sold in the US.

 

[Dana67Dart]

This link from inside the link posted by dibbons has a great full color booklet covering the valve. On each page there is a link on the bottom that has a huge PDF that you can save and/or reprint, unfortunately you have to save it page by page.

1967 Chrysler Imperial CAP System from the Master Technicians Service Conference Session 241

 

[halifaxhops]

LOL smog pump actually had to make the one work in my 87 ram for inspection!
Yes definitely different dist curves.