header tubes smashed down

[dmir55]

I think that headers for the most part are too large anyway. You mentioned Headers by ED. The size he would suggest for primary tubes and collectors most would think it was a joke. But I have done nothing more than put a set of collector extensions on and picked more than two tenths. We in fact set the national record in M/S awhile back with his collectors. I really really wish that he still made headers. Not only did they work very well, his pipes were a work of art. All he sells now are header kits. I have used a number of these kits and they work well. But anyone who has built a set of headers, especially equal length, know they are a real pain. But everyone should try it once or twice.

[Glenn Hayes]

Ed's Venturi Collectors have impressive results: http://www.headersbyed.com/hc_ventext.htm

[Greg Reimer 7376]

Obviously, that header primary tube is quite on the large size. 15/8" headers work better than everybody thinks.

[danoone]

There literature changed the way I think about exhaust flow. Tube size is the start of scavenging. Heavy cars need small tubes. As mentioned above often times people put to big a header on