Question on running 37's

[72K5er]

I am changing some parts on my K5 and I am thinking of stepping up to 37's. I have a 72 K5 with a 350, 4l60e, np208 drivetrain with a dana 44 front and 12 bolt rear. I have enough lift to easily install the tires and I plan on regearing. Do the axles need to be beefed up to accomadate the bigger tires. I had 35's and it did good. For now the truck is for mainly street but may eventually be used for offroad. I know with Jeeps, people say that alot must be done to run 37's but since this is a full size Chevy I was not sure. Thanks