krimson crusher and cyclops where dually tractor tire monster trucks.
the event you speak of is probably Return of the monster trucks… its was a live event on ESPN in 1986. USA1, monster vette, Frankenstein, awesome kong II, blue thunder, bigfoot, michigan ice monster, rollin thunder. the had a sled drag race, unhooked the sleds, went over a hill, over cars, through a mud pit too the finish. Bigfoot beat awesome kong II in the finals.
Battle of the monster trucks was the first tape, then return of the monster trucks and lastly war of the monster trucks.
http://www.youtube.com/watch?v=00OBY8mTMag