During the 25th hour, Pruett took over the cockpit from his Colombian teammate, while Dalziel gave up his seat in the Pontiac Riley prototype to longtime open-wheel racer Patrick Carpentier and road racing ace Jan Magnussen took over the third-place Pontiac Riley for Angelelli.
Magnussen managed to put the car also shared by two-time Daytona winner Wayne Taylor and four-time NASCAR champion Jeff Gordon into second place. But he wound up third, two laps down, after brake problems sent him on an off-course excursion and forced a long pit stop during the final half hour.
It was still a great showing considering their problems. Among them, the team had no clutch for most of the race and had to be push-started by the crew after every pit stop.
Carpentier, also co-driving with Darren Manning and Milka Duno, one of only two women in the 70-car race, finished second -- 1 minute, 14.749 seconds behind Pruett.
"This is very cool," said Pruett, who added the overall win here in 1994 to six other class victories. "It's huge for Ganassi. The car never missed a beat. I was getting a little nervous there at the end, but the car was just rock solid the whole time. We never spent any time in the pits. The car was flawless."
Montoya agreed, adding, "We all three kept the car on the road all the time, and I think that was the secret."
Ganassi's other car, shared this year by Wheldon, Dixon and Mexican driver Memo Rojas was not as fortunate. That trio challenged for the lead through the night, came back to race in the top five after Rojas knocked off the nose cone and then went out of the race when Rojas spun on a wet track and hit a tire wall after daylight Sunday. They finished 41st.
Gordon, who fared considerably better than several other stock car stars in the race, got the full experience in his first endurance race. He spun in the grass on his first stint and drove another stint in a downpour during the night.
"I want to be faster the next time so I can help this team be even more competitive," Gordon said, grinning. "But I don't know how I could prepare for the monsoon I was in last night."
Bobby Labonte, the 2000 NASCAR champion, was part of the team that finished 10th, while the teams with reigning Nextel Cup champion Jimmie Johnson and two-time champion Tony Stewart wound up 36th and 48th after numerous mechanical problems.
Prototypes took the first 10 spots, with a Porsche GT3 co-driven by Jean-Francois Dumoulin, Carlos de Quesada, Scooter Gabel and Marc Besseng finishing 11th, 42 laps behind the overall winners.
A Porsche Fabcar prototype driven by Formula One test driver Gaston Mazzacane of Argentina slid off track and hit a barrier protecting a light pole in the infield portion of the 3.56-mile road circuit Saturday night.
Mazzacane was briefly unconscious and spent the night under observation at a hospital. Officials said he had no serious injuries and was expected to be released Sunday.
