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Thread: Best Towing Gear Ratio...
06-30-2011, 12:12 PM #1
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- Waynesboro, PA
Best Towing Gear Ratio...
I wanted to get some opinions about "what's the best gear ratio for towing?"
Specifically, I have a 2001 Suburban 6.0 4x4 2500. It has the factory "heavy duty" towing package with 3.73 gears. This truck drives me to work about 3 miles each way. It also drives down the interstate during the summer months to my camp. I am usually towing equipment or my Travel trailer. We have a lot of mountain passes around. I'm not worried about fuel ecomony as it already gets maybe 13 mpg HWY and about 9-10 city, so thats out the window. I want a good highway towing gear that matches better to the 4l80 and the higher reving 6.0L in my truck. I can get ratios from 4.11, 4.56, 4.88 or 5.13
I was looking at the 4.56 maybe, but not sure if I'm going to kill the truck @ 70 mph.
Would the 4.11 make a big difference? Or, should I look into 4.56 or even a 4.88?
I don't like the 3.73 with the 4l80's 1st gear, it tachs out in 1st at about 45mph I want to get a better "get up and go" 1st gear for the truck and possibly utilize all 4 speeds on the highway when towing instead of shifting it back to 3rd for crusing. Over Drive with a small trailer on a slight grade is just no power with the stock gearing.
What do you guys think?2001 Chevy Suburban 2500 LT 6.0L
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06-30-2011, 12:30 PM #2
Welcome to the club. How tall are the tires on your truck, stock size?:cool:
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06-30-2011, 04:58 PM #3
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07-01-2011, 07:21 AM #4
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Honestly the best all around ratio for trucks is the 3.73 since it gives you the best for empty, and good for towing. i would leave it be...Mike
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07-01-2011, 12:56 PM #5
Most I would go is 4.11, with stock tires.
07-01-2011, 01:01 PM #6
3.73 is a good stock towing gear. after that, assuming you are on stock tires I would say 4.10's will give you some more towing ability. (my owners manual actually shows an increase in towing capacity as well with the 4.10's over the 3.73's). the 4.10's wont kill you on the highway either. Just remember if you do a gear change do both axles, and you will need to correct your speedo as well. 4.56 will be too much on stock sized tires.David
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