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 […]
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 Reher-Morrison Racing Engines gave […]