Power Test: Cast Manifolds vs. Headers

Cast-iron manifolds versus mid-length headers versus long-tube headers. Which one is best for you? In this episode, we again look to our loyal fan base to feed us ideas of power tests they want to see. The engine tested here is a BluePrint Engines 6.0L LS-based crate engine with BluePrint heads, a stock intake, and a Comp Cams roller cam.