Not all valves are the same. For PEX piping systems, whether plumbing or hydronic heating and cooling, the type of valve you specify and install can actually impact system quality and performance.

Because of the dynamic nature of the equation, camshafts are one of the most misunderstood performance components on any motor. This is especially the case on the overhead-cam modular 4.6L Ford motor.

Over the course of hot rodding, one of the more debatable upgrades has been swapping camshafts--especially in modular engines. Given the Two-Valve's complexity and cost of buying two camshafts, the ...