Yes, it does. My hair has always gotten curlier with length. It also makes a difference when cut in layers, or all one length. If very long, and all one length, its nothing but ringlets.
I had a great deal of damage and have been keeping my hair short. It's in the 2's now. 2c in places, a in the back because it's stacked. I'm very curious to see how my curl bounces back when I do let it grow. It's too hot for that now
*let me add a small section of the hair framing my face, and the underside, has always been in the 2's. And cherub curls to boot. I have noticed that the curl holds better in these areas when longer.
Worn out iPhone. Need I say more?