Best seller! Racers love this unique oval track oil system (pan, pump and pick-up) because it increases horsepower, reduces temperature and keeps consistent oil pressure all the way around the track, even in the corners. Designed to work like a dry sump, the 9137 allows for a series of 4 scrapers and actually lowers oil temperature...keeping the oil light off. The real difference is in the adjustable scrapers -- adjusted to fit your crank and rod combination. Plus it features a full-length kick-out. The high volume oil pump and pick-up is custom machined and reworked to improve oil flow. You'll see and feel the difference immediately. The pump and pick up are pre-assembled. Standard volume pump is optional. Aluminum oil pump upgrade is also an option. Up to 8 qt. capacity (plus the lines and filter). For SBC applications. Up to 3.75" stroke. See Tech Tips for larger stroke.