Beat up, Dented, and "clearanced" Headers.....

For YEARS I used to tell guys that those small dings/dents/bangs making sure those headers fit didn't really matter. What does matter is primary tube size/length and collector size/length. Guys would argue that dented headers were useless. That you lost 10 of 20 HP you would gain. Etc etc. Glad to have a video prove I'm actually right.

There's a recent episode of engine masters on motor trend on demand. Same engine. Made 519.7 Torque and 529.7 HP on 1-5/8 headers. 519.3 Torque and 539.1 HP on 1-3/4 headers. 513 Torque and 539.6 HP on 1-7/8 headers. Which also shows there is such a thing as "too big" headers. Despite what some might say.