Quote:
Originally Posted by gumby79
I am noticing this phenomenon a faster is more fuel efficient with my new transmission and Allison 6-speed.I went from a 2.44 final (od gear 0.69x axel raito3.55) to 2.16finar(0.61) puts me at 1608 @70 and 1263@55. Peak tq is 1846rpm
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The aero wall is at 60-mph. The very few who can prove higher bets better FE, are rare indeed.
Gearing & tire size are a “problem” you’ve created with that trans swap (as you know).
Will be interesting to see what you come up with.
Was any baseline 60-mph testing done?
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