Thread: 55/58 Chevy truck build

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I done a lot of reading on the benefits of a X pipe vs. H-pipe and the H-pipe fit the needs of what I was trying to accomplish. You have to decide which setup fills your needs. You may or may not need a x pipe. Here is why I went with a H-pipe.

H-Pipe: An H-pipe is better at balancing sound and produces a more consistent, classic muscle car growl. It does less than an X-pipe in the way of balancing exhaust gasses but still flows quite well. H-pipes maintain the back-pressure necessary for torque gains earlier in the rpm band, as opposed to the top-end power seen from an X-pipe.

X-pipe: Mid-pipes built with a crossover, or "X" shaped design, purposely cross exhaust streams to even out flow and streamline exhaust gasses through the rest of the system. X-pipes are generally raspier and louder than H or Y-pipes and have been shown to provide slightly more power than their counterparts. You are likely to see most of the power gains higher in the rpm band with an X-pipe.