This is a great site with more info on the theory of header building and design funtion then you need to know! But WOW does it take the mistery out of it ! It also has great info on engines.
You also can use their software to design your own headers.
The part that I found interesting is on tube size.
That on going debate on what size is best ,,,,,,
according to one of their examples the most efficient size for a 454 with 12.5 compression and a big cam is 1.84 !
That makes me tend to believe that what I`ve been told lately about 1.75 being the best size for the `09 could be true !! (I said could)
Take a look in and around this site,,,,,dq
http://www.headerdesign.com/extras/examples.asp
You also can use their software to design your own headers.
The part that I found interesting is on tube size.
That on going debate on what size is best ,,,,,,
according to one of their examples the most efficient size for a 454 with 12.5 compression and a big cam is 1.84 !
That makes me tend to believe that what I`ve been told lately about 1.75 being the best size for the `09 could be true !! (I said could)
Take a look in and around this site,,,,,dq
http://www.headerdesign.com/extras/examples.asp
