Despite some strong qualifying runs, a few teams have major work to do before the final rounds. (Image/Power AutoMedia)

The Horsepower Wars $10K Drag Shootout returns for a third go-around.

In the $10K Drag Shootout, teams are given a vehicle, plus $10,000 to build the quickest drag car possible. Oh, and they have 10 days to do it.

Miss any of the other No Prep Edition episodes in this series? Click here.

The four teams race head-to-head on a no-prep track to decide a champion. The winning team gets $10,000 and keeps its car—the losers get nothing.

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In Episode Seven, the cars finally hit the race track for some qualifying runs. Unfortunately some passes don’t go as planned, and one team gets a catastrophic surprise.

Watch as everyone scrambles to finish final adjustments to make sure they run their best on the final race day. Episode Seven of the Horsepower Wars $10K Drag Shootout No Prep Edition is below.