GM 6.0 gear searching.....
Help?? While this may have been covered to some extent on this forum or another, I'm looking for suggestions for my 2012 Suburban 2500 with the 6.0l engine. Towing my boat(04 Nautique) it's awes...
Forum Discussion
ericpatt wrote:
Thanks everyone! The trip went well. Madison, WI - Bowling Green, KY. Tow/haul shifted to manual and limited trans to 5th gear. Highest trans temps got was about 165-170. On several flat stretches I was able to get it to hold 73-4mph in 5th gear around 2500rpm. Was happy with that.
Otherwise, it was holding 3-3300rpm to keep 65-70 through rolling hills..
4.10`s or if 4.30`s are available will allow you to use 5th gear. and will gain you .5 mpg because the engine will no be working as hard!
I went from 3.73 to 4.30 and it was the best thing I did. I could never use O/D. I can now cruise in O/D at 70 at 2700rpm as opposed to 3200 in 3rd at 67! (it used to hunt for O/D at 65-67) granted I have a 4 speed, but the idea is the same!
