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View Full Version : 4.10 or 4.30 gears


Blackdog
11-19-2010, 06:14 PM
That is bothering me. It is time for me to swap gears from the 3.54's I got now. I got to get a new carrier for sure. This is my dedicated hauler with
315's on it. I have needed to do the swap for a while now but now I NEED to swap. I got to rely on the thoughts out there because I have never had a truck with 4.10's so give me your thoughts guys. Also, This is why I need the extra grunt.

http://i30.photobucket.com/albums/c303/sledpuller/1006101850a.jpg

sledshaker
11-19-2010, 06:30 PM
I had 4.10's in my 01 6spd and it would pull the guts out of anything. It was screaming going down the highway at 80 mph, but it never fell off on any hills. How much you pulling?

Blackdog
11-19-2010, 06:39 PM
The trailer pictured weighs in at 11,000 with another 10,000 in the trailer roughly. The thing is like you said I don't want it to lay down on the hills too much and I am not breaking any speed records. If it will do 70 loaded down without sweating to much than I am happy.

zstroken
11-19-2010, 06:53 PM
Gear it so your pulling in direct.

Lucky Jeff
11-19-2010, 07:07 PM
with a trailer over 20k, it's going to be working regardless.. I wouldn't go any lower then 4.10's with 35's if I wanted to do freeway speeds.

L6powered
11-20-2010, 02:48 PM
I have 4:10 with 315s and tow heavier tham that on a regular basis. It's a great combo for me. I never go over 55 with heavy loads thoughg so I wouldn't be able to comment on higher speeds.

Later
11-20-2010, 03:02 PM
Gear it so your pulling in direct.

I like that Idea, it take much of the load off the transmission and gives the driver a extra gear for down hills and flat lands. Lets see with 35 inch tires 3.55 gears and the transmission in direct that would be 2350 rpm at 70 mph, that should just about put the engine on top of the power band.

RustyBolts
11-20-2010, 03:21 PM
If you're wanting to tow in OD, I'd go with the 4.30's
Me personally, I'd go to 3.73's and tow in direct. That's just me talkin', it's really up to you, just my $.02 on the subject.

scott2001
11-20-2010, 03:40 PM
my dodge i sold had 4.10 with an auto, thats really all the gear your ever going to need. i really dotn think your going to like 4.30 gears man thats way low. your top speed would be like 70 running 3 grand i bet.

Blackdog
11-20-2010, 08:07 PM
If you're wanting to tow in OD, I'd go with the 4.30's
Me personally, I'd go to 3.73's and tow in direct. That's just me talkin', it's really up to you, just my $.02 on the subject.

My plan was to tow in OD and that is why I was thinking about the 4.30's. I thought the 4.30's would hold the speed well in OD.

Blackdog
11-20-2010, 08:10 PM
I like that Idea, it take much of the load off the transmission and gives the driver a extra gear for down hills and flat lands. Lets see with 35 inch tires 3.55 gears and the transmission in direct that would be 2350 rpm at 70 mph, that should just about put the engine on top of the power band.

I had not given much thought to this BUT I may just try it empty and see what happens. Thanks for the idea Zstroken. Thanks for the inputs guys.

RustyBolts
11-20-2010, 08:30 PM
I had not given much thought to this BUT I may just try it empty and see what happens. Thanks for the idea Zstroken. Thanks for the inputs guys.

Direct is gonna be able to handle a lot more torque than OD, too.

Lucky Jeff
11-20-2010, 08:38 PM
I like that Idea, it take much of the load off the transmission and gives the driver a extra gear for down hills and flat lands. Lets see with 35 inch tires 3.55 gears and the transmission in direct that would be 2350 rpm at 70 mph, that should just about put the engine on top of the power band.

I've had 3.54's with 35's and 4.10's with 35's. I will never go back to 3.54's if I want the truck to tow any kind of decent load. There is a huge difference between the two. The truck didn't like the 3.54's at all.

If I could do it over, i'd run 3.73's.. But I wouldn't ever tow over 12 or 14k. If I did more then that, i'd keep the 4.10's. I still see no need to run 4.30's.