That makes a lot of sense, with the NOS I would probably need to get it rebuilt anyway so I might as well go with this Autozone part.
I have the 250 cid engine so do you mean that I need one of the taller ones (left and center photos)?
Yes sir, you are correct I checked again with better glasses and found stamped on the side "Mfg by Carter for Motorcraft Model RSB".
Never mind, I see what you are saying now, the shorter one is what I have for a reason, overall height. Thanks.
Does removing it give any better performance? I'm not sure what benefit it is since I don't plan to drive this in Michigan winters anyway.
Yes it helps performance a little bit by changing the vacuum advance. Like most emission stuff on these engines to make the exhaust smell better back in the day are useless today because todays gas is formulated different than it was back in the 70's.
Only vacuum lines you need are carb to distributor advance and vacuum to automatic transmission. If you have power brakes you will need vacuum to the brake booster.
Thanks for the vacuum diagram. I just bought a nice used Sears engine analyzer and timing light from ebay, going to check everything out this weekend. I think I will remove this solenoid and associated components. One question, when I remove the hose between the solenoid and the vacuum advance, should I plug that port on the vacuum advance or just leave it open to atmosphere?
Your vacuum advance hose should be connected to the spark port on your carburetor not left open to the atmosphere.
The vacuum advance has two hoses, one goes to the carb. and the other goes to the CTAV solenoid (which I am removing). Just wondering what to do with the other port on the vac advance when I remove this solenoid and its hoses.
Disconnect the vacuum line going to the CATV and leave the other end connected to the distributor. This will let the vacuum diaphragm breathe and keep trash out of the diaphragm. If you plug the end of the vacuum hose the diaphragm will have a hard time to advance when vacuum is pulled.
Thats what I was thinking, the diaphram inside needs some type of vent on the opposite side of the vacuum side. So I will do like you mentioned. thanks again.
