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Old 08-07-2009, 02:31 PM   #1
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Matching front & rear axle ratios?

OK. . .stupid question!


I'm new to modifying 4WD's. . .I haven't messed with axle gears in a 4WD before so I figured I'd better ask just to make sure I know.



Do your front and rear axle ratios need to match?



If they don't, what would be the advantage/disadvantage of this?



Thanks for cluing me in on this.

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'94 Jeep YJ Wrangler
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2" 4WD Hardware Body Lift

Eventually
D44 TTB 4WD IFS Conversion w/coilovers & bypasses
4-link rear w/coilovers & bypasses

'49 Jeep Willy's Pick-up Truck
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14-bolt rear/D60 front 2/40" BFG MTR's on H2 8-lugs
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Old 08-07-2009, 02:39 PM   #2
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Quote:
Originally Posted by atomicjoe23 View Post
OK. . .stupid question!


I'm new to modifying 4WD's. . .I haven't messed with axle gears in a 4WD before so I figured I'd better ask just to make sure I know.



Do your front and rear axle ratios need to match?



If they don't, what would be the advantage/disadvantage of this?



Thanks for cluing me in on this.

Yes they need to match, if they dont match your front and rear wheels will turn at different speeds and damage your transfer case. I have seen mud boggers and sand draggers use different ratios in the axles, but they would correct it buy running different size tires.

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Old 08-07-2009, 02:46 PM   #3
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That's what I thought.

I just wanted to double check. . .I haven't done much messing around with 4WD's before so. . .better safe than sorry. . .you never know.
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'94 Jeep YJ Wrangler
4.0L I-6/AX-15 5-spd./NP231
2" 4WD Hardware Body Lift

Eventually
D44 TTB 4WD IFS Conversion w/coilovers & bypasses
4-link rear w/coilovers & bypasses

'49 Jeep Willy's Pick-up Truck
350SBC/TH350/NP205
14-bolt rear/D60 front 2/40" BFG MTR's on H2 8-lugs
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Old 08-07-2009, 03:22 PM   #4
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Quote:
Originally Posted by silvergoat View Post
Yes they need to match, if they dont match your front and rear wheels will turn at different speeds and damage your transfer case. I have seen mud boggers and sand draggers use different ratios in the axles, but they would correct it buy running different size tires.
x 20!
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Old 08-07-2009, 03:30 PM   #5
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The mud boggers and sand draggers can keep their different sized wheels. . .that would look DUMB on a Willy's P/U!!!
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'94 Jeep YJ Wrangler
4.0L I-6/AX-15 5-spd./NP231
2" 4WD Hardware Body Lift

Eventually
D44 TTB 4WD IFS Conversion w/coilovers & bypasses
4-link rear w/coilovers & bypasses

'49 Jeep Willy's Pick-up Truck
350SBC/TH350/NP205
14-bolt rear/D60 front 2/40" BFG MTR's on H2 8-lugs
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Old 08-07-2009, 03:44 PM   #6
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Originally Posted by atomicjoe23 View Post
The mud boggers and sand draggers can keep their different sized wheels. . .that would look DUMB on a Willy's P/U!!!
Not if it was slammed with a blown big block running in sand drags.
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Old 08-07-2009, 04:19 PM   #7
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True. . .not what we have in mind though.

We're going for a jacked up WWII look. . .inspired by the Dodge Power Wagon off of Gearz TV show (minus the Rockwell axles. . .at least for now!!!).

__________________
'94 Jeep YJ Wrangler
4.0L I-6/AX-15 5-spd./NP231
2" 4WD Hardware Body Lift

Eventually
D44 TTB 4WD IFS Conversion w/coilovers & bypasses
4-link rear w/coilovers & bypasses

'49 Jeep Willy's Pick-up Truck
350SBC/TH350/NP205
14-bolt rear/D60 front 2/40" BFG MTR's on H2 8-lugs
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