Test vehicle: 1992 F-350 supercab dually • 2-wheel drive • axle ratio 4.10:1 • E4OD 4-speed automatic trans.
Horsepower and torque measured at rear wheels.
Wastegated Sidewinder turbo system
Stock
Banks
Improvement
Results
Horsepower, best gain
176 hp (3000 rpm)
260 hp (3000 rpm)
+84 horsepower
48% more (3000 rpm)
Torque, best gain
360 lb-ft (1400 rpm)
503 lb-ft (1500 rpm)
+143 lb-ft torque
40% more (1500 rpm)
Solo: 0-60 mph acceleration, time*
15.57 sec
9.54 sec
-6.03 sec
39% quicker
Solo: 40-60 mph acceleration, time*
7.97 sec
4.74 sec
-3.23 sec
41% quicker
Towing: 0-60 mph acceleration, time*
27.3 sec
17.24 sec
-10.06 sec
37% quicker
Towing: 40-60 mph acceleration, time*
13.64 sec
8.65 sec
-4.99 sec
37% quicker
Towing: 0-60 mph acceleration, distance*
1,507 ft
951 ft
-556 ft
37% less distance
Towing: 40-60 mph acceleration, distance*
1,014 ft
644 ft
+370 ft
36% less distance
Maximum speed, hill-climb, towing (6% grade)*
47 mph (2nd gear)
72 mph (3rd gear)
+25 mph
53% faster
Fuel economy, solo**
22.2 mpg
24.5 mpg
+2.3 mpg
10% better mileage
Fuel economy, flat towing**
10.0 mpg
11.5 mpg
+1.5 mpg
15% better mileage
Fuel economy, mountain towing**
10.2 mpg
13.2 mpg
+3.0 mpg
29% better mileage
Exhaust temperature, mountain towing**
1150°F
1050°F
-100°F
9% lower EGT
*As tested by Trailer Life magazine. Truck weight with driver and full fuel: 6,580 lbs.
Towing weight with trailer: 12,940 lbs.
**As tested by Trailer Boats magazine. Towing weight with boat-trailer: 13,850 lbs.
