Hi.
I have an exhaust leak coming from the old heat riser, or spring loaded butterfly valve, or whatever it's called, on the right exhaust manifold on my '68 383. I have been trying to find a replacement stock exhaust manifold but haven't had much luck, and I have also had a hard time finding any headers that say they will fit on this particular car. I found a kit to replace/rebuild the heat riser but would rather try to find a manifold that doesn't have the same setup built in. Everything I find online says it won't fit on a C-Body Chrysler.
So my question is, does anyone know of an aftermarket exhaust manifold that would solve my problem? If not, does anyone know of a header application that will fit on a C-Body without having to change out the starter or make a lot of modifications?
As a last resort I suppose I can gut the old manifold and try to thread and seal the holes that the butterfly shaft runs through with bolts, but since it's cast I'm afraid of cracking it and making it worse.
Thanks.

 

 

Thanks. That's what I ended up doing. Just wondering if there's someone out there that has headers or aftermarket manifolds for this application.

 

many years ago chrysler had a kit that had the shaft, plate, bushings, spring and weight. but ill bet no more.

 

I actually found a kit on ebay (of all places) but decided just to remove the butterfly and braze the holes. Living in Arizona I figured having a heat riser in the exhaust manifold is kind of redundant.

 

yep living in kansas i have to remember the cold in winter. the coldest i have seen was -10 f. so remember the flashpoint of gasoline -45 f. years ago i found a trick for starting cars with carburetor in cold weather, you just pump some gas into the intake, and wait a while is the trick. to many people get impatient. living in Arizona you wont have any trouble.