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Got back in the garage today to clean up a few parts and I hit some snags. I noticed that my manifolds have had some repairs. My 455 is stock and will remain so as long as I am running these manifolds. Just wondering if this is no big deal, or should I source new ones now?
Welded on both sides of the ear Welded in center Also, can someone confirm that this is the choke pull off?
thanks in advance for your help,
bob
The manifolds probably could be used, but gaskets would likely have to also be used to contain leaks. It is the choke pull off; and it will likely not work due to the crack in it.
It's not only the choke pulloff, it controls the opening rate of the secondary air valve (flapper doors). Take care bending the metal tabs on the support bracket during removal the break easily. Some qjet parts dealers sell different versions depending on how fast you want the secondaries to come in. Otherwise it's trial and error. No matter what yours needs to be replaced. Good luck
I put my manifolds on and they do not line up with the exhaust. I moved on to another area and as I was digging through my parts car i came across these headers. They seem much beefier. Can someone tell me which belong to my 455? Basically x and y manifolds or 1 and 3
Does anyone know a trick to getting this loose? Is it necessary? It sure seems like it is not going to come loose without breaking. Could use some advice.
Bob
Bob, use PB Blaster on the spring and valve in the exhaust manifold. I had to remove the valve in the manifold of my 64 98. It won't cause any drive ability issues being removed, but it sure will if it's stuck and you leave it in.
I see you are in Wisconsin, if you drive your car in the winter, you need to make sure that valve in the manifold is working. That makes a quicker warmup to help the carburetor operate efficiently. Otherwise, your carb may have a tendency to flood out and make life miserable in the cold.
My luck has been the heat riser valves always tend to stick in the closed position over time and cause overheating. I just take a torch and cut them out and weld up the little hole/s on the outside. It is not really necessary for the engine to run well even in the cold.
September 7th, 2018, 03:01 PM
