PBY-1 2,115 miles/1210 miles with 2000lb bomb load
PBY-2 2,131 miles/1242 miles with bomb load
PBY-3 2,175 miles/1258 with bomb load
PBY-4 2,076 miles/1285 with bomb load

When the fives (-5 and -5A) and the -6 came around, they quoted 2,500 miles
as a patrol range which was pretty close with the dash 92 engines, but a lot
depended on thecfewand ordnance load.