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Mercedes' new 32-valve V8
Even so, the link below ("DaimlerChrysler AG Mercedes 5L SOHC V-8") not only talks about what is to be liked about MB's current V8, it also provides interesting comparative data for the next one:
e.g., "The 500E's V-8 [from the '90's] made 322 hp and 354 lb.-ft. of torque."
The stats for MB's current "350" V6, factored up to a V8--4.67L making 357 hp and 344 ft. lbs. of torque--compares pretty well to the stats for the 500E powerplant that apparently offered awesome power in its day, and that makes me pretty interested to consider the next ML with the new V8, especially if it is in the ~$50K price range instead of the 500E's $80K.
It also is interesting to see how well the current 5L V8 holds up under the same comparison, i.e., at 325 ft. lbs. of torque at the same low 2700 rpm, the current "500" would be closer to matching the new V8 that that it was to the venerable 500E's powerplant.
What I think would be most interesting, however, is if MB's new V8, when matched with the new 7-spd tranny, might allow the new ML to post expected hwy miles of more than 22 mpg--while towing a 21' V8-inboard--because that would be better than my old VW beetle..