Quote:
quote:Originally posted by thor
gm lower gear ratio of 3.7.3 thats the sweat spot for gm s rev to low a ratio the engine will lug and add extra heat to the engine and drive train the 410 rear end makes the engine rev higher less lugging of the engine.but uses more fuel. people that sled pull ae still using 373 rear ends. torquing the engine and drive train to four times the torque that we pulling trailers will ever see all with no problems
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I can't quite follow your first sentence, but my D/A combo can't lug...if necessary, the Allison down shifts. Makes no difference what the rear end ratio is, the Allison will select the correct gear.