3.73 or 4.10 rear end gears

[930ck]

Looking at 3/4 ton pickups specs and besides the ratios what is the difference in the truck that allows the 4.10 to haul and pull so much more than the 3.73. Looking at a chevy with a 6.0 gas.

 

[WilliamBos]

Looking at 3/4 ton pickups specs and besides the ratios what is the difference in the truck that allows the 4.10 to haul and pull so much more than the 3.73. Looking at a chevy with a 6.0 gas.

You answered your own question, the gearing. 4:10 is lower that the 3:73, which give more towing capacity. But, your mpg will suffer, especially empty.

 

[Diamondpilot]

4.10 or lower gets things rolling easier which means less stress on the drive line.

Chris

 

[930ck]

You answered your own question, the gearing. 4:10 is lower that the 3:73, which give more towing xapavity. But, your mpg will suffer, especially empty.

Just doesn't seem that just that difference would let you pull three thousand pounds more.

 

[Diamondpilot]

Just doesn't seem that just that difference would let you pull three thousand pounds more.

It does. Remember your first 3 speed bike or better yet a 10 speed? Try taking off in the high gears was brutal but the liw gears made it effortless. Same principle as a truck.

GM liked to use 3.08 gears, 3.42, 3.73, and 4.10. The first two gears I listed were worthless in a truck before the 6 speed auto masked it with a ultra low 1st and 2nd gear. The tow ratings with a 3.08 and 4 speed was about 6000# and the 3.42 not much better.

The 6.0 is a reliable motor but a little gutless without the 4.10's behind it with the 4 speed. Its gas hungry, about 12mpg empty and 8 towing. The 3.73 gears are ok with the 6 speed but still no match for a better engine.

Chris

 

[930ck]

It does. Remember your first 3 speed bike or better yet a 10 speed? Try taking off in the high gears was brutal but the liw gears made it effortless. Same principle as a truck.

GM liked to use 3.08 gears, 3.42, 3.73, and 4.10. The first two gears I listed were worthless in a truck before the 6 speed auto masked it with a ultra low 1st and 2nd gear. The tow ratings with a 3.08 and 4 speed was about 6000# and the 3.42 not much better.

The 6.0 is a reliable motor but a little gutless without the 4.10's behind it with the 4 speed. Its gas hungry, about 12mpg empty and 8 towing. The 3.73 gears are ok with the 6 speed but still no match for a better engine.

Chris

The pickup has the six speed and 3.73, agree the 6.0 is not the best but can't justify a diesel. About 10,000# is all I plan on pulling and not that often, most of the time it will be empty. Agree on the gas mileage but don't drive a lot of miles in a year

 

[timswi]

The pickup has the six speed and 3.73, agree the 6.0 is not the best but can't justify a diesel. About 10,000# is all I plan on pulling and not that often, most of the time it will be empty. Agree on the gas mileage but don't drive a lot of miles in a year

If it has a 6 speed and 3:73's you'll be just fine in the weight class you're describing. I pull a 7800# dry TT and probably mid to high 8000# gross BP TT with a 6.2 6 speed with 3:42's and it's nearly effortless even pulling into the PA National Forest mountains with a full bed of stuff and full cab--2 adults, one kid and a Great Dane.

Plus the 6.0 is more of a torque/grunt motor than my 6.2..All the better for you.

 

[930ck]

If it has a 6 speed and 3:73's you'll be just fine in the weight class you're describing. I pull a 7800# dry TT and probably mid to high 8000# gross BP TT with a 6.2 6 speed with 3:42's and it's nearly effortless even pulling into the PA National Forest mountains with a full bed of stuff and full cab--2 adults, one kid and a Great Dane.

Plus the 6.0 is more of a torque/grunt motor than my 6.2..All the better for you.

Any place I will be towing is pretty flat so this combination should work , have been reading that fuel usage between the two ratios are about the same.

 

[chubby]

Before '07 3/4 tons had 4.10 as std ratio with gas engine. The first gear ratio was 2.86. In 2007 six speed came along with a 4.06 first gear. This trans has two overdrives. GM made 3.73 std with 4.10 as an option for 100.00. I owned '03 with 4.10 and four speed trans, '07 with 3.73 and six speed, '11 with 4.10 and 6 speed, and now '12 with 4.10 and six speed. I keep track of mileage and hands down 4.10 with 6 speed gets better than 3.73 in all use with the exception of high speed driving on an interstate road. All other uses the 4.10 in a 3/4 ton with a 6 speed trans will get better mpg. The reason is in the trans ratios. The second overdrive is hard to maintain unless you are at speeds of 70 plus and without a trailer. Then you can keep 6th gear (second overdrive). The rest of the time, the 4.10 will deliver 1.5 to 2 mpg better. Driving around town or pulling tractor or 34' camper 4.10 offers better mpg and better power. Ask your dealer to pull the spec's up on "auto-book" or "dealerworld" and he will be able to show you all trans. ratios. To prove my point in '14 GM has made 4.10 std. and the 3.73 an option. They are always looking at CAFE ratings. Unless you are driving high speed 70+ for a good distance the 4.10 is the correct choice.

 

[NICKB304]

I have 3.73 on my 2012 2500 hemi which I think has a lower 6th gear than the chevys and it is ok with the tiny stock tires but really bogged the truck down when stepping up to some 33" tall all terrain tires. I got a sweet deal on a truck on the lot is the only reason I went with 3.73. I will do a 4.1 gear swap when I get time or maybe 4.56 if I plan on running 35" tires down the road.