From the
Testing ECZ-B vs Mummert 4V intakes – Round One
thread.
Y block Billy (3/6/2010)
Ted/John,
In the exhaust issue department, What are the best diameters for headers and exhaust systems for a healthy street car?
should primary's be 1 5/8", 1 3/4" and what size collector? should the rest of the system be 2" 2.5" or larger?
I wanted to start making my own set of headers is why I am asking this.This is a question I too am interested in because I plan on building some headers soon. In addition to the questions above, I have one about stepped headers. Is there a certain length that tends to work well before stepping up the header to the next size?
Is it better to match the shape of the ports? Leave the tubes round at the port? Perhaps the same shape, only slightly larger?
Lawrenceville, GA