It is dry sump. Still has the circle track cam 740 lift not sure of duration. I had bought 2 engines. The 1st was for arringtons auction was in there office as a display had a lot of new parts but was just a propped up display. The 2nf i actually bought off here. Was complete except pistons. It was a old gasoline alley Wayne Jessel engine. I met a guy Danny Glad from Glad precision machine in virgina. Initially i was looking for parts but ended up having him do all the work. I had issues with my block and its now mostly Dannys parts. I don't think i could have built anything comparable for a better deal.