Well, it depends on what the body type of the pitbull is. Some pits are short and wide, some are taller and skinny, abd some are just huge! So take that into consideration. The dog will have a mix of traits from both breeds, but it's hard to say what traits from which breed, you'll get. Both breeds have big heads, so its safe to say that his head will be huge. Rottys have big bodies, and pits have very well defined muscle tone, so hopefully there will be a mix of both. You'll pretty much have a VERY intimidating looking dog!
I have a Pitweiler and he has a pitbull body(lean-agile looking) with the exact markings a rottweiler has.I adopted him at 2 1/2 months at 16 lbs and now hes 25 lbs at 3 months.
I have a Rottweiler and blue nosed pit bull mixed puppy, I got him when he was about 5 months old. He is all black with flecks of white in his fur, his chest is wide and has a burst of white in it, his head is big, he's tall with big feet, and he weighs about 125 pounds. He's my big baby. He has the saddest big brown eyes.