Originally Posted by bimmerjph
I thought it was S65 based.
They tried out a new 4.5L S65-based motor in DP a couple years ago, but for whatever reason, they have stuck with the S62. I'm not sure if they could not get the engine competitive while complying with the specs Grand Am was willing to approve it at, or if they were reliability concerns or what.
Congrats to the Ganassi team.
By the way, I notice one of the 328i teams took second in the ST class in the BMW 200 sister race in the Continental Tire series on Friday at Daytona. Nice job.