just got a new truck to pull the boat

[jake's02-22i]

Truck looks great! Congratulations!
Love the blue

My buddy nicknamed it Blue Balls.

[jake's02-22i]

did you get 3.73 gears or 3.42?

They are the 3.73 gears so I will get better HWY MPG but towing wont be as good.

[dinfusino]

Congrats on the new truck.

[noworries]

They are the 3.73 gears so I will get better HWY MPG but towing wont be as good.

3.73 gears will tow BETTER than the 3.42s and will accommodate the big tires you're sure to add later. You're better off with the lower gear ratio that you got. Good job.

You've got a great truck. Go enjoy it.

[jake's02-22i]

my bad I have 3.42. I had 3.73 in my ranger.

[slacker661]

do you have the JL sub box or did you make one?

its the JL box

[jake's02-22i]

Just talked to the dealer and they told me that they wouldn’t change the ratio for me. They said it would void the warranty. I could always do it later but it will throw off the speedometer and engine timing

[jake's02-22i]

its the JL box

that thing is sick but it's like $900.00 then you need an amp.

[slacker661]

how many other people have silverados with the 5.3?

How do they do towing?

mine has the 5.3 with cold air intake and cat back exhaust. You can tell the difference. My wifes yukon with the 5.3 is a little slower pulling the boat. Unless you pull something real big this truck will make you real happy

[slacker661]

that thing is sick but it's like $900.00 then you need an amp.

Yeah its expensive but sounds so good. my truck didnt have the Bose system and my wifes did. So I had to upgrade. So glad I did. It f'n rocks

[ragboy]

I have a 2002 GMC Sierra with the 5.3. I did the Granetelli's pull hard kit, plus flash reprogram, and it made a huge difference. Added about 70hp. I can tow my 24Ve very well now, and it didn't before.

[noworries]

Just talked to the dealer and they told me that they wouldn’t change the ratio for me. They said it would void the warranty. I could always do it later but it will throw off the speedometer and engine timing

Gotta love them dealers. What a load of How could changing the axle ratio void the warranty? Its a factory option.

I don't know about Chevy, but in my Dodge you tell the computer the axle ratio and the tire revolutions per mile and all is good. Of course, the dealer didn't know how to do it. I had to tell them.

Go pull your boat. You'll be fine. But if you don't like the way it pulls you can either swap out the whole axle, or have the gears changed. Check the chevy forums, you could even find someone who'd do a straight across rear end swap for the 3.42 one. Its fairly common on the Dodge forums for guys to swap their 3.73s with other guys for their 4.10s.

Don't over think this. Go pull your boat with your lovely new truck.

[ragboy]

I have this for my Sierra, and you can get one for any chevy full size. It allows changing of tire diameter and axle ratio. Just a quick reflash, and your speedometer is calibrated.

http://www.granatellimotorsports.com...lay.php?gid=45

[jake's02-22i]

Gotta love them dealers. What a load of How could changing the axle ratio void the warranty? Its a factory option.

I don't know about Chevy, but in my Dodge you tell the computer the axle ratio and the tire revolutions per mile and all is good. Of course, the dealer didn't know how to do it. I had to tell them.

Go pull your boat. You'll be fine. But if you don't like the way it pulls you can either swap out the whole axle, or have the gears changed. Check the chevy forums, you could even find someone who'd do a straight across rear end swap for the 3.42 one. Its fairly common on the Dodge forums for guys to swap their 3.73s with other guys for their 4.10s.

Don't over think this. Go pull your boat with your lovely new truck.

I know. I know. I changed the whole axle on my ranger from 3.73 to 4.10 becaue I had 33"tires on it. I dont think I will have to worry about it. on this truck. i probably wont lift it.

[G-MONEY]

They are the 3.73 gears so I will get better HWY MPG but towing wont be as good.

You will be fine with 3.73 the 4.10 are overkill I was worried you got the 3.42....