What did you do to your truck today.The 3rd chapter

[72c20customcamper]

Originally Posted by Sheepdip

I read an article years ago, it may have been David Freiburger of HotRod Magazine where they dyno'd a SBC engine with new perfect headers, they then gave the headers the the old hammer to fit treatment.

The pulls they performed showed no measurable difference in performance.

The dimple was minor . I believe they missed the mark on this one pipe . The front and rear pipes on both sides have a similar dimple . I just made it a little longer.