... technology.heat-treatment process3.Type for different gasoline,diesel, CNG engine, please check the follow. 4.Packing details, cartoons,osvat,queen ... series2.870″,3.000″,3.250″,3.400″,3.470″350 series3.480″,3.500″,3.562″,3.750″,3.875 ... .250″,4.375″455 series4.210″,4.250″,4.500″ 350 racing car engine casting crankshaft