The B-17 could haul the maximum load of 17,600 pounds to 1,100 miles! Page 206 of Janes
If it's the 45-46' Jane's, then I think not mate. There is no mention of 17,600 lbs.
It states the "normal range (maximum bomb load and normal fuel) 1,100 miles @ 220mph at 25,000 ft".
In the armament section it makes it clear -
"External racks no longer fitted".
I believe "maximum" is referring to 12,800 lbs, based on other sources.
Here's the Range/Bomb load figures according to the Australian War Memorial...
(Does anyone have photos of B-17s on their way to Hun-land with bombs attached to the under-wing racks?)