GCH Long Block Racing began rebuilding hot rod engines in the 1970s. Now they are on the cutting edge of Subaru's ever-improving, ever-evolving performance technology. They are a second and third-generation machine shop with a combined total of 65 years of experience. And they are proud to offer top-quality engineering technology. In addition, every job that comes through their shop is custom built to order. GCH Long Block Racing is entirely in-house, where they have control over what leaves the shop. Each block and head are tested through their rigorous inspection from start to finish by their team of state-certified machinists. They measure their blocks inside and out to ensure the best tolerance levels and specs. They sell rebuilt Subaru engines to Subaru owners, mechanics and other machine shops. Their products are better than others because they do everything in-house with a state-certified master machinist.