Ford 2004 Econoline Owner's Manual page 141

GCWR (Gross Combined Weight Rating)/Trailer Weights
Rear
Engine axle
ratio
6.8L 4.10
E-350 Stripped Chassis (176" wheelbase) (11000 GVWR)
5.4L 4.10
6.8L 4.10
E-450 Cutaway and Chassis Cab (all wheelbases, all GVWRs)
6.8L 4.56
E-450 Stripped Chassis (all wheelbases, all GVWRs)
5.4L 4.56
6.8L 4.56
Maximum trailer weight for all cutaway (E-350 and E-450) vehicles
must be calculated by subtracting the weight of the vehicle (including
incomplete vehicle weight and payload which includes second unit
body weight, cargo and passengers) from the GCW. Otherwise,
maximum trailer weight is 10,000 lbs. (4536 kg).
For high altitude operation reduce GCWR by 2% per 1,000 ft. (300
meters) elevation.
To determine the maximum trailer weight designed for your particular
vehicle as equipped, follow the section Calculating the load your
vehicle can tow/carry earlier in this chapter.
Your vehicle's load capacity is designated by weight, not by volume, so
you cannot necessarily use all available space when loading a vehicle.
Distribute the load so that only 10–15% of the total is on the tongue. Tie
down the load so that it does not shift and change the weight on the
hitch.
2004 Econoline (eco)
Owners Guide (post-2002-fmt)
USA English (fus)
Maximum
Maximum
Loaded
GCWR -
Trailer Weight
lbs. (kg)
- lbs. (kg)
18500
10000 (4536)
(8391)
13000
8400 (3810)
(5897)
18500
10000 (4536)
(8391)
20000
10000 (4536)
(9072)
13000
8200 (3719)
(5897)
18500
10000 (4536)
(8391)
Driving
Maximum
frontal area of
2
trailer - ft
2
(m )
60 (5.52)
60 (5.52)
60 (5.52)
60 (5.52)
60 (5.52)
60 (5.52)
141