What is a Ford F-150 7700?
In 1998 and 1999 Ford had an "F250 light duty" which was the
body style of a 150, but with 7 lug axles, etc. In 1998 (and
possibly 99, I forget) this was the ONLY F250 available. Then the
Super Dutys came out in late 99. Rather than have a "light duty"
and a "super duty" 250, they discontinued the l.d. series, and
offered an F150 "7700" package, which brings the gvw of the truck
to 7700 lbs. (A super duty is 8800). This allows people to insure a
"1/2 ton" truck, but have (almost) a 3/4 based on specs.
All 4x4 versions (to my knowledge) are equipped with a plow prep
package, transmission cooler, etc.