LPE built LS7 8G's and all the bolt ons plus a 250 shot with a converter and gears in the 6L80E will be a 9 sec. car all day long and still get like 20+ mpg....
they have hit high 10's with new cam, worked heads and headers on 6L80E cars with converter and gears....the LS3 is the shiz...which translates to L92 for us....