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Unread 03-12-2011, 07:46 AM   #1
baellis1
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locker and gears.

I am going to be putting an air locker and 4.56 gears in my 97 TJ. Anyone have some opinions of which brands to go with? I wan't durable and i don't want to have to do this again for some time. Thanks Guys

Brian

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Unread 03-12-2011, 07:51 AM   #2
Jerry Bransford
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There is only one brand of aftermarket air locker which is ARB and that's known as about the most bulletproof locker going so it's a good choice. Ring & pinion brand wise, you can't beat Spicer. Afterall, our axles are Dana-Spicer and that's what they come with from the factory. There are a couple other good brands but I always specified Spicer for my regearings.
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Unread 03-12-2011, 07:53 AM   #3
baellis1
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Well let me add that im running an 8.8
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Unread 03-12-2011, 07:56 AM   #4
baellis1
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Also where would be a good place to find this stuff for a decent price? I am planning on this being a costly but necessary upgrade and would like to pay the least amount for it
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Unread 03-12-2011, 08:09 AM   #5
vosevichs
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When I built my 8.8 the Dif. Shop recomended Ford Racing. But I went 4.88, so I got Superior. Ford Racing only went to 4.56.
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Unread 03-12-2011, 08:18 AM   #6
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I bought kits. Got a super 30 kit, Master Rebuild kits. 4x4 Group buy, has some decent prices, But 2 weeks later Superior was cheaper. I just made a list of what I needed and shopped around online.
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Unread 03-12-2011, 08:20 AM   #7
slafferty
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completeoffroad.com cheap and fast shipping. they carry yukon gears..
jerry i believe yukon also sells an air locker
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'00 TJ, 4.0, nv3550 spd, E-lockers Front and Rear, 4.88 gears. Homebuilt Bumpers/ tube doors.. Homebuilt Long Arm in the making... 35 inch MT-R's ordered[QUOTE=RUBtjICON;9622056]If you arent scratching it, you arent trying hard enough :tea:[/QUOTE]

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Unread 03-12-2011, 08:22 AM   #8
slafferty
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OP, your profile says you are running 35" tires, 4.0, 5 speed(ax-15).. If i were you i'd look into running some 4.88's instead of 4.56
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'00 TJ, 4.0, nv3550 spd, E-lockers Front and Rear, 4.88 gears. Homebuilt Bumpers/ tube doors.. Homebuilt Long Arm in the making... 35 inch MT-R's ordered[QUOTE=RUBtjICON;9622056]If you arent scratching it, you arent trying hard enough :tea:[/QUOTE]

[U][I][B]MY BUILD THREAD[/B][/I][/U]
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Unread 03-12-2011, 08:29 AM   #9
baellis1
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well im going to be using this thing as my DD. so 4.88's won't be too much? This is the kinda information i need. I read this chart that said 4.56's that would bring me close to stock. It said 4.88's for more power. If you have some more specific information to help me choose i would love it. Thanks guys.
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Unread 03-12-2011, 08:34 AM   #10
Jerry Bransford
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I agree with the others, 4.88 is a much better ratio for the 5-speed and 35" tires. I ran that combination for years and loved it. 4.56 won't quite return all of the performance lost by running such a large and heavy tire as a 35".

And Slafferty you're right, I forgot about Yukon now also having an air locker. That said, I'd still go for the ARB.
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Unread 03-12-2011, 08:37 AM   #11
baellis1
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Alright guys it looks like im going with 4.88's and an ARB air locker. Now i guess its time to find out where i can get all the stuff i need for the cheapest dollar.
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Unread 03-12-2011, 08:38 AM   #12
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Mine's a DD, and once a month wheeler. So I went 4.88. My RPMs are exactly like my grand. Run around 2k at 65 mph. It's nice to hit the gas in 5th gear and pass someone.
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Unread 03-12-2011, 08:45 AM   #13
baellis1
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awesome, right now my cart is getting pretty pricey, im going to be installing a locker and 4.88 gears and i buy the install kits that should come with everything i need correct?
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Unread 03-12-2011, 08:45 AM   #14
Jerry Bransford
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Vosevichs, 2K on the tach at 65 mph with 4.88 gears is a lot lower than what I had with 4.88, 5-speed, and 35" tires as your metric size tires are equivilent to. Mine was more like 2375-2400 or so at 65 and roughly 2600 at 70 mph.

Has your speedometer been recalibrated since installing bigger tires? If you have not, your speedometer is indicating a slower speed than you are actually driving which would account for your lower than expected rpms.
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Unread 03-12-2011, 08:50 AM   #15
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One of the guys I run with just installed an ARB in his 8.8. After lots of shopping around he got his from East Coast Gear Supply.

Shop some of the Ford sites, broncograveyard.com has an 8.8 ARB listed at $775 but I don't know what they charge for shipping...

And add another vote for 4:88's with 35's. I have 4:56's on 35's and I'll be installing 4:88's when I install the HP that's sitting there mocking me
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