gear matching

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crazyoffroader

NAXJA Forum User

Location

Seattle, WA

• Dec 29, 2004

• #1

How bad is it to run axles that have slightly different ratios, such as 4.55 in the back and 4.56 in the front, or 4.10 in the back and 4.11 in the front?
I have an isuzu axle that has frustrating axle options, only 4.77:1, 4.55:1, 4.3:1 and 4.1:1 from the factory and 5.38 aftermarket.
help!?

 

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small pederson

NAXJA Forum User

Location

nunya

• Dec 29, 2004

• #2

those are essentially the same and you wouldnt have a problem

 

B

Beezil

Member #Nay

NAXJA Member

Location

Indiana-Missouri

• Dec 29, 2004

• #3

small pederson said:

those are essentially the same and you wouldnt have a problem

Click to expand...

ditto

 

C

crazyoffroader

NAXJA Forum User

Location

Seattle, WA

• Dec 29, 2004

• #4

Thanks!

 

BrettM

NAXJA Forum User

Location

michifornia

• Dec 29, 2004

• #5

the rule I've always heard is 2%

 

BrettM

NAXJA Forum User

Location

michifornia

• Dec 29, 2004

• #6

oh, and a lot of Toyota guys out there run 5.38s with 5.29s (only using 4x4 offroad)

 

4

4x4forlife

NAXJA Forum User

Location

Warrenville, IL.

• Dec 29, 2004

• #7

100% agree with everyone else.

when i was looking for 4.88 for my dana 44 they had them listed as 4.88/4.89 as long as they are right next to each other i dont see any problem.

 

Rawbrown

NAXJA Forum User

Location

Encinitas, CA

• Dec 29, 2004

• #8

Specifically you can run a .07 difference. a good example is a 9" rear and a D44 front on 38" tires. the D44 is available in 5.13, 5.38 and 5.89.
the 9" is available in 5.00, .11, .13, .25, .33, .43, .50... to name a few.
with a 5.38 in the D44 you could either go with a 5.33 in the rear or and have the rear push the front around or you could go 5.43 rear and have the front kinda pull. works really well.

 

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crazyoffroader

NAXJA Forum User

Location

Seattle, WA

• Dec 29, 2004

• #9

so I could run my isuzu 12 bolt with 4.30 and find a d44 with 4.27's and be o.k., it would just pull a little if in 4wd on pavement.
Thanks again

 

old_man

NAXJA Forum User

Location

Loveland, Colorado

• Dec 30, 2004

• #10

In the OLD days, 4x4's routinely used a slightly taller gear in the front straight from the factory. It was said to improve steering.

 

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FUNKYTEE5

NAXJA Forum User

Location

Vancouver, Wa.

• Dec 30, 2004

• #11

crazyoffroader said:

How bad is it to run axles that have slightly different ratios, such as 4.55 in the back and 4.56 in the front, or 4.10 in the back and 4.11 in the front?
I have an isuzu axle that has frustrating axle options, only 4.77:1, 4.55:1, 4.3:1 and 4.1:1 from the factory and 5.38 aftermarket.
help!?

Click to expand...

I think I read about it on Randy's ring & pinion. They say that anything less than 1% in ratios is equivelant to a 1/3" in tire diameter or uneven tire pressure etc. . . http://www.ring-pinion.com/content/technicalhelp/default.asp?pid=111

FUNKYTEE5