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Unread 07-10-2010, 10:37 AM   #1
Davecore555
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1999 TJ Wrangler 
 
Join Date: Sep 2008
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Need Gear upgrade/Axle Swap Advice

Here we go...

Well I plan on getting a new jeep in about 1 to 2 years once the new penstar engine has ran for a bit in the jeeps. Not sure if I can hold out.

I had a buddy of mine who has put about 100 miles on a set of 35" Toyo Open Country M/T tires and **** Cepek DC-1 and said that he would sell me all 5 for $350 each. He wants 37s now. See pic attached.

Question 1: Do you think it is worth it????



If I go with 35s I was planning on upgrading to 4.88 Superior Gears. I currently have the factory axles for a 99: Front Dana 30 & Rear Dana 35c (3.73).

I found I could buy the superior 4.88 gears and master install kit for about $568. See pic, pretty sure this is all compatible.

Question 2: Do you think this is wise? Both mechanically & financially or would a axle swap with the 4.88 gears or even 4.56 be wiser??

And I have someone that has installed gears about 6 or 7 times before and never had issues who will do it for little $$$, plus hes a good friend who is a mechanic.

Please any constructive feedback would help out.

Question 3: Since I'm getting a new jeep in about a year or 2 do you think its wise to even do this?? I'm gonna have to buy new tires within the next few months anyway.









My setup>

99' Auto TJ Wranger:
3.5 R.E. Standard Lift
BDS 9500 Shocks 3"
Rancho Steering Stablizer
Teraflex Adjustable Track-Bar (3" & up)
K&N Air-filter
Pace-Setter Headers
33x12.50x15 Dayton Timberline A/T
Warn Front/Back Bumper
Dynomax Exhaust
High-Performance Catalytic Converter

tires-1.jpg   tires-2.jpg   tires-3.jpg   superior-gears-pinion-set-install-kits-568.61.jpg  
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Unread 07-10-2010, 11:56 AM   #2
2003X
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I was running a setup D30/D35 with 3.07s and 35" Toyo MTs. I recently went to HPD30 and Ford 8.8 with 4.88s and couldn't be happier.
I personally wouldn't dump any money into the D35. I was going to do the same thing, and had the HPD30 and Ford 8.8 shipped to my house for 2 grand. Same price it was gonna cost me to re-gear the D30/D35.

Do it right the first time and get a stronger rear axle. You can get the 8.8 shipped to your house for around $1,500 and just bolt it in, if that's the route you want to take.

Question 1: $1,750 for all 5 I guess is a good deal. I paid $1,200 just for the Toyos, and $500 for rims.
Question 2: Get stronger rear axle and go 4.88s. http://eastcoastgearsupply.com/ is where I ordered mine.
Question 3: Keep the TJ.
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Unread 07-10-2010, 11:59 AM   #3
Jay12
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Depending on what gears you have now you may need a new carrier for the D30 as well. And if you're getting a new jeep in 2 years and don't plan to offroad this then I wouldn't spend the money.
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Unread 07-14-2010, 06:18 PM   #4
Davecore555
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Thanks for the feed back guys.

It seems regearing is a way to go; however alot of forums and sites say expect some breakage if you do any medicore offroading. So I'm thinking of just going for a bolt on axle(s).

1. Any suggestions; I really don't want to break the bank either
2. Do you think it will be ok running 35' tires on a jeep with a R.E 3.5' lift?
3. Planning on getting different fenders; was thinking bushwackers but read some pretty bad things about them; looking for something that will give me more room.
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Unread 07-14-2010, 06:33 PM   #5
never monday
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4.88 is too high for your trans
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Unread 07-14-2010, 08:45 PM   #6
Davecore555
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So a 4.56 would work fine for the 35's? Probably will never go bigger as long as I have the TJ.


Also do you think it would be necessary to get rid of the front D30? I was thinkin of getting a D44 on the back and keepin the D30 or maybe getting a HP D30?

Any thoughts

Last edited by Davecore555; 07-14-2010 at 08:59 PM..
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Unread 07-14-2010, 08:47 PM   #7
Jay12
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yep 3 spd auto and 35s=4.56s
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Unread 07-15-2010, 06:25 PM   #8
Davecore555
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So it looks like the 4.56 gears are good then.

do you think it would be necessary to get rid of the front D30? I was thinkin of getting a D44 on the back and keepin the D30 or maybe getting a HP D30?
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Unread 07-15-2010, 06:29 PM   #9
never monday
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Quote:
Originally Posted by Davecore555 View Post
So it looks like the 4.56 gears are good then.

do you think it would be necessary to get rid of the front D30? I was thinkin of getting a D44 on the back and keepin the D30 or maybe getting a HP D30?
an HP30 and a Super35 or 44 is a proven combination fo0r 35's
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Unread 07-15-2010, 06:47 PM   #10
LMoscar45
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I wonder how much different the 3 speed is for gearing vs the 03 and up 4 speed? Most of the guys on another rubicon specific forum swear by running 5.13's when going to 35's.
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Unread 07-15-2010, 06:50 PM   #11
never monday
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Quote:
Originally Posted by LMoscar45 View Post
I wonder how much different the 3 speed is for gearing vs the 03 and up 4 speed? Most of the guys on another rubicon specific forum swear by running 5.13's when going to 35's.
night and day. We've had many discussions about it, search.
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Unread 07-15-2010, 07:45 PM   #12
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Originally Posted by LMoscar45 View Post
I wonder how much different the 3 speed is for gearing vs the 03 and up 4 speed? Most of the guys on another rubicon specific forum swear by running 5.13's when going to 35's.
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Unread 07-15-2010, 07:58 PM   #13
Davecore555
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Any suggestions on where to purchase the Dana 44 Rear and the HP30??? Really not trying to break the bank.
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Unread 07-16-2010, 04:36 AM   #14
Coop02x
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Quote:
Originally Posted by Davecore555 View Post
Any suggestions on where to purchase the Dana 44 Rear and the HP30??? Really not trying to break the bank.
If your willing to be patient, try looking at a variety of forums, craigslist, etc. and you should come across what you are looking for. When I was facing the whole regearing issue, I kept an eye out for a rear and/or front D44 or an 8.8 that had the brackets already welded on. I ended up getting a rear D44 and front D30 with 4.88 gears at a really good deal. I would have liked to get a D44 for the front, but for the time being it wasn't a bad idea to get the D30. Came out much cheaper than just regearing the D35c and D30.

Try to find some local forums and be sure to keep a close eye on them. That is how I came across mine.

Edit: I was fortunate enough to find mine in about two weeks of serious looking.
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Unread 07-18-2010, 01:08 PM   #15
Davecore555
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My buddy has a Ford 8.8 from his mustang and said he would sell it to me for $300. I woudl still need to regear however. Will this work, I've read some horror stories with the 8.8 swap.

Also would I need to get a sye, new drive shaft etc...
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axles , gears , tire size

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