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  #1  
Old 12-14-2009, 03:33 PM
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Gear Change...Carrier Too?

Okay i have a 1980 Chero W/T and im going with a 6 inch lift and 35's. Changing up to 4.56 gears. Question is do I need to change the carrier too? Its stated to have 3.31 gears from the previous owner.
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Old 12-14-2009, 03:49 PM
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I think 4.56 is the break, I think you will need a carrier, I'll have to look,not sure.
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Old 12-14-2009, 03:51 PM
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If it helps its the D44 up front and AMC 20 out back.
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Old 12-14-2009, 03:55 PM
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here it is
http://www.ringpinion.com/ContentFra...ier_Breaks.inc
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  #5  
Old 12-14-2009, 03:55 PM
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Quote:
Originally Posted by madmikeX3
If it helps its the D44 up front and AMC 20 out back.

You will need a different carrier for the 44 for anything over 3.92. IIRC the 20 will need to change for anything over 4.09 but i'm not positive on it.
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Old 12-14-2009, 04:01 PM
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Not sure what IIRC stands for. If i go with 4.10's would i still have to change carrier? Also Bj's does not carry a carrier for the AMC to accommodate larger gears. Any Suggestions?
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Old 12-14-2009, 04:03 PM
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IIRC If I Remember Correctly
Check randy,s ring and pinion In the link above.
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Old 12-14-2009, 04:08 PM
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Ahh got it.

Also I checked randy s and he does carry the carrier. Would I be able to reuse my spider gears or would it be best to buy a new set to go with it?
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Old 12-14-2009, 04:12 PM
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reuse spider gears and thrust washers will be fine, unless there is signs of serious wear. but know would be the time to add a locker if you were thinking about it.
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Old 12-14-2009, 04:16 PM
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You can install "thick" gears without changing the carrier in a D44.
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Old 12-14-2009, 04:22 PM
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That would save me some money. What exactly are the thick Gears?
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Old 12-14-2009, 04:40 PM
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I bought a used set(4.10) for $50 from a Jeep Rubicon with 500 miles on 'em.

Anyplace that sells D44 r&p gears should have them.
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Old 12-14-2009, 04:41 PM
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Quick search netted this result....never done business with the place, and no idea about the price(high/low/avg.).

http://completeoffroad.com/i-158536-...-456t-rub.html
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  #14  
Old 12-15-2009, 07:46 AM
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Ok i see that and it should help. Is the Front D44 a reverse rotation?
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  #15  
Old 12-15-2009, 07:48 AM
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Quote:
Originally Posted by madmikeX3
Ok i see that and it should help. Is the Front D44 a reverse rotation?
Nope, standard rotation.
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  #16  
Old 12-15-2009, 08:10 AM
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Okay i used this gear calculator and im wondering do i really need to change out my Gears from 3.31 to 4.56? Or would i be fine?

My Settings are tremac 178 with NP208 35's and 3.31 gears Vs
tremac 178, NP208, 35's and 4.56.

Seems as if the 3.31's would be streetable about keeping the RPM's down for travel but with the jeep just be sluggish?
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Last edited by madmikeX3 : 12-15-2009 at 08:13 AM.
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  #17  
Old 12-15-2009, 08:22 AM
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The rule of thumb is...

31" tires = 3.73 gears

33' = 4.10

35" = 4.56

An FSJ with V8 power can get away with running larger tires and stock gears, but performance will be lacking.
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Quote:
Originally Posted by 78 Wagoneer
This year for ECI I got a Jeep. Pretty important upgrade.
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  #18  
Old 12-15-2009, 08:27 AM
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Dang okay guess im going to just have to accept that the gearing will cost be a pretty good amount. Just about 7-800 bucks.
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  #19  
Old 12-15-2009, 08:34 AM
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Quote:
Originally Posted by madmikeX3
Dang okay guess im going to just have to accept that the gearing will cost be a pretty good amount. Just about 7-800 bucks.
Don't get me wrong...the Cherokee will turn those 35s w/stock gears. You're not going to have the same zip it had and fuel economy will suffer even more, but it will turn the big meats on 3.31s.

I've run 33-35" tires w/3.54s before. Aint the best combo, but it got me where I was going.

31s and 3.31 gears roll pretty well.
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Quote:
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"Go forth and be a tool".

Quote:
Originally Posted by 78 Wagoneer
This year for ECI I got a Jeep. Pretty important upgrade.

Last edited by Casey : 12-15-2009 at 08:41 AM.
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  #20  
Old 12-15-2009, 08:41 AM
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Also, try contacting Bull Gear Inc. - aka ncjeepers (Tony Casey) about doing your gear swap. He has a shop in Locust, NC. A bit of a drive for you, but it may save you some $$$.

Bull Gear, Inc. 1295A East Main Street. Locust, NC 28097.

704.793.3507
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Quote:
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Quote:
Originally Posted by 78 Wagoneer
This year for ECI I got a Jeep. Pretty important upgrade.
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