[51secondchance]

hello can any one please tell me if I'm nuts or just paranoid I'm putting together my 51 8ba engine and I'm to the point of installing the cast iron heads and a lot of post i have read says 55 to 60 lb. torque but my ford book says 65 ,70 ft lb. its not a rocket engine I'm just curious if the reason most people go lighter and retorque after run in a couple times is to minimize warpageor has everyone from experience found that 55 to 60 is just fine ?? thoughts please