350 SBC engine. Internet says this is a 3970010 69-79 302/350 car & Truck 2 & 4-Bolt Most common. I didnt look if its a four bolt but probably is according to that. Was in my daily driver until Wednesday. Doing an LS swap so this is no longer needed. Ran and drove fine. Seemed maybe a little tired when I was towing with it. 4 bbl Quadra jet carb. Comes complete other than flexplate.