Marky Dissod
Full Access Member
May I show you something?
10L80: ... 4.69 ... 2.99 ... 2.15 ... 1.77 ... 1.52 ... 1.28 ... 1.000 ... 0.85 ... 0.69 ... 0.64 (7.32 Spread)
6L80E: . . . . 4.03 . . . . 2.36 . . . . . . . . . 1.53 . . . . 1.15 . . . . . . . 0.85 . . . . . 0.67 (6.01 Spread)
Awfully imprecise, yet it still manages to visually represent the improvement from the 6L80 to the 10L80.
10L80 not only has more gears than the 6L80, most of those additional gears are more assertive.
Look at it long enough, you'll see: it'd literally be COUNTERproductive to give the 10L80 any more axle gear.
3.23 is the GM OE axle gear for every suv with 10L80. OK, watch this:
10L80 x 3.23 axle: ... 15.15 ... 9.66 ... 6.95 ... 5.72 ... 4.91 ... 4.13 ... 3.231 ... 2.75 ... 2.23 ... 2.07 (7.32 Spread)
6L80E x 3.42 axle: . . . . 13.78 . . . 8.07 . . . . . . . 5.23 . . . . . . . 3.93 . . . . . 2.91 . . . . 2.29 (6.01 Spread)
6L80E x 3.08 axle: . . . . . 12.41 . . .. 7.27 . . . . . . . . . . 4.71 . . . . 3.54 . . . . . . 2.62 . . . . . . . 2.06 (6.01 Spread)
OK, so, if highway MpG is more important to you / her, then go with 3.42 with the 6L80E.
But if metro / urban stop'n'go, or towing / hauling is more important, seriously consider 3.73 with 6L80E.
Bet his wife'd NEVER let him have a 6.7L.
