Post Tagged with: "header collectors"


Mailbag: Explaining 4-1 vs. Tri-Y Exhaust Header Collectors

Q: Can you explain the difference between “4-1” and “Tri-Y” collectors? … A: The collector is where the primary tubes merge together. 4-1 and Tri-Y are the two main types […]

Tech / Tech Articles

Header Theory (Part 2): Tuning Header Collectors for Optimum Performance

In the first part of our Header Theory posts, we dug into the whys and how of header primary tube length. If you recall, Hooker Headers and┬áReher-Morrison Racing Engines gave […]