This is the biggest complaint that I get about the F450's...... TOP SPEED SUCKS!!
Originally Posted by Diesel Dave 04
350's should have 19.5s and the 450 and 550 should get 22.5s
F-450 Pickup Changes
Ford is making big changes to its biggest Super Duty pickup model for 2011, after hearing from F-450 owners that they wanted better fuel economy and a higher top speed, according to Doug Scott, Ford's truck and SUV marketing manager.
The 2008-10 F-450ís frame is a hybrid of sorts that combines the front frame portion of the F-450 chassis cab with a wide-spaced rear frame (wider than the chassis cabís standard 34-inch spacing) based on the F-350, so the cargo box wonít twist under load. But it weighs a lot, with a hefty base curb weight of 8,851-pounds for the four-wheel drive version.
Removing weight is a quick way to improve mileage, so Ford made major revisions to lighten up the 2011 F-450ís frame and running gear.
In back, the new F-450 swaps its old Dana S110 rear axle for a new Dana M80 and replaces the old widetrack Dana Super 60 front axle for a standard widetrack Dana 60. It also switches the F-450 chassis cabís front frame portion with the front frame clip from the F-350 pickup.
The new F-450 chassis and axle setup is similar to the recently discontinued ďFat BoyĒ F-350 but the F-450 still retains its best-in-class 24,000-pound maximum trailer towing rating. Maximum payload, though, is lowered by 500-pounds, from 6,180-pounds to 5,680-pounds, according to Scott.
All of the hardware changes total up to a 600-pound weight savings are said to give the 6.7-L diesel powered 2011 F-450 a double-digit percentage improvement in fuel economy.
To raise the F-450ís top speed, the old 19.5-inch wheels have been dropped because their tires were rated up to only 80 mph. New 17-inch wheels and tires are expected to raise the 2011 F-450ís top speed above 90 mph.
With all the changes to the F-450, some might say that itís the toughest, most capable F-350 pickup in Fordís lineup.
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