Can my truck tow this?
So like any other new person that's bought a travel trailer I probably have put the cart before the horse. So ultimately the question is can I tow this... I have a 2019 GMC Sierra Elevation DC 4x4 w...
Forum Discussion
Grit dog wrote:
Gents, I don't think anyone is arguing that lower final drives multiply torque more and generally are better for towing.
What I am saying, is, now, with more powerful engines and more gears (super deep first, 5-7 more underdrive ratios and still a couple OD gears) we can now have our cake and eat it too compared to times of yore.
Grit,
WHile I agree with ALL that you are saying. Some of us do not drive over 60-65 mph.....at all! As such, these taller RA ratio's while nice from an MPG at freeway speeds....some of us never will literally use or need said DOD gear, UNLESS, we can get a lower RA, say a 3.73 or 4.10 to have a decent rpm at 60-62.
But as noted, one needs an overall ratio of 24-1, with 400 lb ft of torque, to move 20K lbs up a 30% grade. How you get there, does not matter, you can do a 4-1 axle, 6-1 trans. or a 3-1 axle, with an 8-1 in trans. Both will do an equal job. The 4-1 with a .75 OD, will net you a 3-1 final drive, if the 3-1 RA is running in direct, same 3-1 final ratio.
No right or wrong way to look at this issue, only what is BEST for whos reading my 02!
Marty
