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scorgo

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alaska511 Senior Enthusiast

alaska511

Posted
Posted
4.10

 

Why is that?

 

 

 

A lower (numerically higher) ratio develops more power per revolution of the driveshaft.

 

4.1 revs of shaft per rev of axle. This is desireable for heavier loads.

Zembonez Senior Enthusiast

Zembonez

Posted
Posted

+1

 

4.10 is better for towing because it multiplies the torque of the engine more efficiently and provides more power for moving heavy loads.

C & A s Dad Senior Enthusiast

C & A s Dad

Posted
Posted

+1

 

4.10s will put your 5.3 in it's "sweet spot" when towing allowing this relatively small engine to handle some significant loads. Not sure what you are towing but let's assume it is a 6,000 lb camper. Towing this load in 3rd at 55 or 60 will have your engine right where it wants to be with this load. If you move to 4th, you would find you would need to increase your speed to around 70 to keep the RPMs in the same range. I personally do not like towing at speeds over 60 to 65 so I simply run mine in 3rd and keep it under 60.

C & A s Dad Senior Enthusiast

C & A s Dad

Posted
Posted

When I say "sweet spot" I am talking about the minimum RPM the 5.3 will turn and remain in the prime torque band. I cannot speak for the later models like yours, but my 02 really comes in strong around 2,220 RPMs and will maintain my speed or accelerate from here with my camper in tow and on a moderate hill. It seems to have plenty of power avail from 2,200 to 3,000 and is comfortable running at these revs. It will pull from 2,000 RPMs and less but the power and tq are not readily available.

 

I really like to keep it around 2200 to 2400 when tuggin my camper. It just seems to be "happy" in this range.

C & A s Dad Senior Enthusiast

C & A s Dad

Posted
Posted

What I mean by 3rd is Drive, not overdrive.

 

If you are towing in OD you are likely running speeds above 65 on flat ground or your transmission is downshifting a good deal to drive.

 

Because I am typically towing on 2 lane roads with speed limits of no more than 55, I elect to keep it in 3rd with the Tow Haul Mode engaged and keep my speed around 55. As I said before, if towing on the Interstate and you are comfortable towing above 65, you can put it in OD and let it go. For me, it is all a matter of keeping the revs in the 2200 range while driving at a safe comfortable speed.

 

I would be interested in knowing if you are using 3rd or 4th and what speeds you tow at as well as the roads you tow on (flat or hills)???

VMax2007 Senior Enthusiast

VMax2007

Posted
Posted
4.10

 

Why is that?

 

 

 

A lower (numerically higher) ratio develops more power per revolution of the driveshaft.

 

4.1 revs of shaft per rev of axle. This is desireable for heavier loads.

 

 

i.e. The same reason you shift your bike into 1st gear when pedalling up a steep hill. :)

scorgo Enthusiast

scorgo

Posted
  • Author
Posted
What I mean by 3rd is Drive, not overdrive.

 

If you are towing in OD you are likely running speeds above 65 on flat ground or your transmission is downshifting a good deal to drive.

 

Because I am typically towing on 2 lane roads with speed limits of no more than 55, I elect to keep it in 3rd with the Tow Haul Mode engaged and keep my speed around 55. As I said before, if towing on the Interstate and you are comfortable towing above 65, you can put it in OD and let it go. For me, it is all a matter of keeping the revs in the 2200 range while driving at a safe comfortable speed.

 

I would be interested in knowing if you are using 3rd or 4th and what speeds you tow at as well as the roads you tow on (flat or hills)???

 

 

 

I keep it in drive with the tow/haul button in and do about 60 on the highway and 45-50 on side roads(always in drive). I never have dropped it down a gear when towing , i don't find it revs all over the place!

I meant a 6000lb TT! So all and all my speeds around 50-65!

Do you do a lot of towing! What are you towing if so.

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