Straight line runs. doesn't affect the driveline even in 4h. U just don't want turn the wheel ...thats when damage could happen... with that in mind , I would think 4L would get u a harder launch. I wonder if u would run out of gearing before finishing the 1/4 mile.
saw one yesterday... and gave me the bronco wave ... if u don't know ..this, a middle finger. The guy was very livid about showing it to me for what seemed as an eternity . I wasn't feeling childish enough to reflect on it. But it would seem he might have been jealous of my big solid axle.