I picked these up years ago with an old collection I purchased and decided to try them out. They leaked like a sieve so I nixed them and went back to the stock rings and gland setup.
Here's an Ad for these from a 1920's Western Auto catalog.
I wish that was still sold today. I'd buy a set. Jim Patrick
unfortunately, the gland is only on one side so it still allows the manifold to sag and bend. The gland needs to go all the way through and hold to both the block and to the manifold.
Yes Norm, but if your manifold is not straight, you could not use it.
Jim, Norman hit the nail on the head. The glands in these do NOTHING to hold the manifolds in position as the original glands do. These things will allow your exhaust manifold to flex and warp.......not a good thing! Ole Henry would call these "Spurious"