1964 Thunderbolt how fast were they?

[X-TECH MAN]

Originally Posted by Dan Bennett

Ray Brock's caption on one of the photos is interesting. It sounds as if no one had come up with the term "headers" at that point since he goes into great lengths describing what we've taken for granted for many years.

I know the Pontiacs and Mopars still were using cast pieces to link tubing parts, so was this the first header?

The first exhaust I ever saw with curved, individual pipes was on the Ford Indy engines and was referred to as a "bag of snakes" Maybe the technology from Cosworth carried over.

Open headers or exhaust cutouts became legal for stockers and the super stockers in 1961. Prior to that they could use crude headers but had to run thru a complete muffeled exhaust system.