Came with a 292 that was supposed to be out of a 1955 bird.  Had a 56 block and 57 heads.  Is this a 57 distributor?

Thanks
Paul

A 57-up carburetor relies on mechanical advance, which the 55 distributor does not have. The 55 vacuum advance is designed to work with the Teapot carburetor. In other words, with a 57-up carburetor and a 55 distributor, he will have no ignition advance. The vacuum advance circuitry can be plugged on a Teapot, thereby relying solely on the mechanical advance of a 57-up distributor, which he does not have. I think it makes more sense when Ted says it, but people who have already figured it out will know what I'm trying to say.