Advice on gear, part upgrades after lift/tires
I was thinking a gear change I wanted to do 4.86 up front and a 4.10 in the rear if I can. Can you event do that? My rear now is a 3.55 and my front I think is 4.10. I have a 01 1500 Reg cab 4x4 5.9 auto.
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Registered User
Joined: Jan 2009
Posts: 27
Likes: 0
rims with 4.53 backspacing will cure your rub. thats what i have. i think the stock rims have something like 5.85 backspacing.
i went from 33's to 35's and could notice a immediate difference in braking and acceleration. i will be going to 4.56's some time.
my tire and rim combo weigh like 98lbs.
[img=http://img135.imageshack.us/img135/813/picture002lh5.th.jpg]
i went from 33's to 35's and could notice a immediate difference in braking and acceleration. i will be going to 4.56's some time.
my tire and rim combo weigh like 98lbs.
[img=http://img135.imageshack.us/img135/813/picture002lh5.th.jpg]
Grand Champion
Joined: Nov 2004
Posts: 6,099
Likes: 6
From: Colorado
Sure, you can do that. But you will never be able to use 4 wheel drive again without leaving some parts on the ground as you roll to a stop. Gears in the front and rear have to be the same.
Why. So could i run 4.10 and 4.10? what are so choices? So I have to leave my 3.55 alone than?
All Star
Joined: Jun 2007
Posts: 981
Likes: 0
From: Langley, BC, Canada
sorry i just read the earlier posts.
If your gears are mismatched right now, they are wrong, someone has changed them. they are supposed to be the same.
if the front is a higher gear (numerically lower) than the rear, when 4wd is engaged, the front tires will turn faster than the rear at any given RPM resulting in either the front tires spinning while the rear catches up, or the front grabbing and skidding the rear tires because they cant keep up, depending on which end has more traction.
If your gears are mismatched right now, they are wrong, someone has changed them. they are supposed to be the same.
if the front is a higher gear (numerically lower) than the rear, when 4wd is engaged, the front tires will turn faster than the rear at any given RPM resulting in either the front tires spinning while the rear catches up, or the front grabbing and skidding the rear tires because they cant keep up, depending on which end has more traction.
Grand Champion
Joined: Nov 2004
Posts: 6,099
Likes: 6
From: Colorado
They can actually be off by just a little, and in fact are usually designed that way on purpose to compensate for things like longer drive shaft in the rear, turning in the front, chain play in the transfer case, etc. In fact, when I had 4.10's from Yukon, the technical spec on the gears was that the front was a 4.09, and the rear was a 4.10. This is not enough to make a difference (Randy's told me they can't be more then .02 different), but I thought it was interesting.
But ya, if you have a 3.55 in one, and a 4.10 in the other, then you now have a 2wd truck because you'll grenade it if you try to drive in 4x4. Are you sure that's what you got?
But ya, if you have a 3.55 in one, and a 4.10 in the other, then you now have a 2wd truck because you'll grenade it if you try to drive in 4x4. Are you sure that's what you got?
