Another surprise was the U-3 Todd Hoss Mortgage Too coming up with a 162.074 speed for second-best time on the ladder.
On Friday, Jimmy King brought the fleet's only piston-powered boat back from the river quickly when the manifold pressure dropped rapidly.
Team owner Ed Cooper wasn't sure why it happened.
But on Saturday morning, Cooper said "we changed three things, and now we're checking through the motor to see what the problem was."
Digital Access for only $0.99
For the most comprehensive local coverage, subscribe today.
Of the fast time, Cooper quipped "We think (race officials') timing off."