This extra high capacity “T” sump is for for Mark V style Big Blocks. The 8" deep, 14" long sump holds 10 quarts of oil. The pan features our horsepower saving oil recovery pouch and a built in crank scraper for maximum power gain. Six trap door baffles and a bolt in windage tray prevent oil slosh from the motion of the boat. The pan is angled in the front for improved drain back, is notched for a sea pump, has three 1/2" N.P.T. fittings for oil drain, and includes an oil level check. Note: These pans have been REDESIGNED to clear O.E.M. marine starters with a 168 tooth flywheel. This pan requires our 18-365 pickup.