I'm in the process of thinking about rebuilding a 1972 402 rat engine for my truck. The motor I have ran ok when pulled, smoked and leaked oil, unknown mileage. I'd like to rebuild it, but I haven't torn it down yet. I'm looking to build an engine with around 9:1 compression, and to make a lot of torque at low rpm. Except for cam, intake, Qjet, and maybe headers, I'd like to stay pretty stock. My cylinder head casting number is 6272292, and the Mor-Tec website lists this as an open chamber oval port head. Does anyone know what the intake and exhaust valve sizes are? head cc's? Would this be a good head for the kind of engine I want to build? Thanks for your opinions.