Smog Question
Thread Starter
Racer
Joined: Sep 2004
Posts: 348
Likes: 1
From: Southwest Suburbs of Chicago Ill.
St. Jude Donor '14
Smog Question
I'm planning on removing the smog stuff on my 73 L-48. Yhe nuts for the air tubes turn very easy!!!!!!!!!!!! Any ways what size plug do I need to plug the holes at the manifolds? It is all stock. Thanks. Oh one more thing how do u replace the plug wires to the 1,3 and the 2,4 plugs. The block and the engine mount prevent me from getting the wires out. Thanx 
Racer
Joined: Mar 2005
Posts: 445
Likes: 0
From: SAN DIEGO(SANTEE) CA.
The plugs on my 73 and 78 are 1/4" pipe thread. Sorry can't help ya on the plug wires. Put new ones on mine and had no problem getting them out or the new ones in. if you have a pic it would help.
Melting Slicks
Joined: Nov 2004
Posts: 2,540
Likes: 1
From: Pineville Kentucky
CI 6-8-9 Veteran
For the plug wires, you can remove the distributer boot from your new wires and remove the spark plug boot from your old wires tape them together. Have a friend slowly pull the wire up toward the distrubuter while you help ease it thru from underneath the car. Works like a top! A fellow CF member clued me in.
Le Mans Master
Joined: Dec 2003
Posts: 5,727
Likes: 38
From: Fremont CA
The threads are NOT! pipe thread, they are a tube thread (1/2" fine thread.) You can buy plugs with the correct thread at NAPA parts stores, Wheatherhead 151X5 is the nuber from memory. I have a set of 2" diamter outlet "Rams Horn" exhaust manifolds for $140 shipped to you if you live within $40 shipping cost of my 94536 Zip code if you wat to look clean when you remove everything. you could also get some 1/2" fine thread Socket Head set screws to plug those holes but, again it wont look very good in my opinion.
