Pushrod diameter question

Would there be any Detriment to having pushrods in a 360 LA motor that had a diameter smaller than 5/16? I have owned and driven the car since 2016. Like many on the forum I know little about the history of the motor. I would assume that a larger diameter pushrod would be stronger, but is there anything else I should be concerned about ? I do get foot cramps from time to time , but I have never had the motor above 5500RPM. Does the diameter of the pushrod in anyway affect valvetrain noise?
Thanks.