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Re: Swap from 3.55 gears to 4.10 gears - Pros and cons?
[Re: AtomicDog]
#1410857
03/29/13 06:01 PM
03/29/13 06:01 PM
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Joined: Jan 2003
Posts: 15,976 Chilliwack B.C. Canada
RUNCHARGER
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 15,976
Chilliwack B.C. Canada
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Too bad you weren't closer, I've got a set of 4.10 diffs I have to get rid of, all set to go. Save you hours of work and tons of $$$$. If you pull loads all the time your mileage will go up, if you run around empty your mileage will go down I reckon.
Sheldon
Sheldon
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Re: Swap from 3.55 gears to 4.10 gears - Pros and cons?
[Re: AtomicDog]
#1410858
03/29/13 07:23 PM
03/29/13 07:23 PM
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Joined: Aug 2005
Posts: 5,997 Salem
Grizzly
Moparts Proctologist
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Moparts Proctologist
Joined: Aug 2005
Posts: 5,997
Salem
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Sheldon has you on the right track here.
If you can get your hands on a 4.10 rear-end from the wreckers you can just slip it under there and drive around in 2wd for a few weeks and see if you like it.
The 4.10's in my 360 Off-Road with 285/75-17's are standard issue and I really like them. Here are the pros:
*Good fuel mileage if you keep the speed at 60mph or less.
*Off-line acceleration is a bit better.
*You can tow heavy in third gear, and I have pulled an open car hauler with a Challenger on it in 4th no problem.
*Less down-shifting on the freeway for hills.
Cons:
*Expensive to do on a 4wd.
*Setting up new gears is tricky and never seems to be as perfect as the factory.
*If you like to drive above 60mph your fuel mileage will start to get worse. The "kegger" manifold really likes 1600rpm and when you start to go over that mark the mileage goes down (with mine anyway).
Mo' Farts
Moderated by "tbagger".
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Re: Swap from 3.55 gears to 4.10 gears - Pros and cons?
[Re: AtomicDog]
#1410860
03/30/13 03:01 PM
03/30/13 03:01 PM
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Joined: Dec 2007
Posts: 1,357 central Florida
VL21
pro stock
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pro stock
Joined: Dec 2007
Posts: 1,357
central Florida
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This is just an opinion ...worth exactly what it cost ya.
Do it.
Running the 285s your functional gear ratio now is in the low 3.00s, you will be regaining some of the mechanical advantage, in same/same use I would expect mileage to go up, and of course will pull out better from a stop. That is unless all your driving is 70 mph interstate.
All based on past experience with carbed trucks, 4 wd, 3.55/4.10.
Don't forget correcting the speedo ...
It takes gasoline to interest me.
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