When it comes to long-tube Honda headers-or headers in general for that matter-there are basically two primary designs: the tri-Y and the 4-into-1. As the name implies, the tri-Y refers to a group ...

The headers that Dick has already run on the car are a Tri-Y configuration with stepped primary tubes, measuring 13/4-2 inches. The smaller set of Tri-Y headers measure 15/8-17/8 inches.

1 If you’re going to test brand-new Tri-Y headers from Pfadt, you may as well test them on one of GM’s finest, a ’13 Corvette Z06 Carbon. Outfitted from the factory with ZR1 goodies, ...