When building an Engine from the ground up, case integrity is most important. Original used Engine Cases are often cracked, align bored improperly or too many times, and are weak in some manner that will compromise the longevity or end results of your investment and hard work. Often, the investment in a new Engine Case is little more than the cost of the necessary machine shop work required for a quality and durable rebuild. This Brand New Dual Relief Engine Case is the latest and features a medium oil pick-up tube. Used for stock 1500cc up to 1600cc Engine builds, or can be modified for High Performance, Racing, or Off Road applications.