ok so i have replaced my headgaskets for the 2nd time being the first time i didnt torque em properly and now i get no bubbles in the radiator unless i give the car throttle block and heads are both good no cracks and the surface is flat had them checked out could this be my radiator? it is rather rusty in the inside but i do lose a little coolant but not a whole lot and i have checked for leaks i dont know what else to do with it except if i dont have it sold get a 350 for it the car is still driveable i just dont trust taking it for a trip longer than 30 minutes