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Old 11-27-2012, 05:15 PM   #1
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tj 4" lift tire size

I just recently purchased a 98tj. i was told by the seller that it has a 4" procomp. this may or may not be true. it has 33 bfg all terrains, which are actually only measuring to around 31.5. But clears these tires pretty easily.
i have some smittybily tube fenders, w 3" flare; front and rear, on the way in the mail!!!i know i will definatelly clear 35s with these fenders on. My question is, wil i fit 37s??
I would really like to put some 37 goodyear mtrs if i can fit them. i am trying to gather some info to see if i need to order 35s and 456 gears, or if i can go with the 37s and 488???
also if i can fit the 37s. what else will i need to do? i have an 8.8 w an artec industries truss and install kit, in the shop ready for asembly. so i can still put some extra angle on the pinion, cus the truss and stuff is not yet welded in place. will i also need a slip yoke elim?? or cv drive shaft??
i would like any info to help me in this assembly .

thank you for your knowledge!!!

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Old 11-27-2012, 07:08 PM   #2
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Your drivetrain specs would help determine gears for what you want.... 4 or 6 cylinder.... stick or auto. Knowing this will get you the info you want.

You will need some major upgrades to steering and brakes not to mention axles to take the stress of 35's... let alone 37's....

4" lift and 1.25" bodylift with correct bumpstops will clear 35's.

If you don't have the SYE or CV driveshaft yet.... get it. Ditch the slip yoke driveshaft since you want 35's or bigger.

Once you do that... you will need to have rear adjustable upper control arms ( I suggest adj. lowers as well ) along with an angled CV rear track bar bracket and/or adjustable rear track bar.

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Old 11-28-2012, 08:46 PM   #3
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thank you.
i have the 6 cyl manual. it has the long arm lift. i bought an 8.8 and a nice truss from artec industries. all brakes are the highest grade offered, w machined rotors too. what else will be needed for braking?
i have not got the slip yoke elim, or cv drive shaft, but have looked into them, and its on the list.
i was looking at adjustable track bars too. would it be beneficial to get front and rear??
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Old 11-29-2012, 06:33 AM   #4
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Adjustable track bars are a benefit, yes.

The Vanco 15" big brake kit from Savvy would greatly improve your stopping power on 37's

vanco brake kit

Steering upgrades should include the Currie correctlync

http://www.currieenterprises.com/ces...nc.aspx?id=913

I believe the limitations on the Dana 30 is 4:88's... this gear is perfect for 35's, 5 speed manual behind a 4.0.

Axle upgrades are going to happen... which way you go.... up to you. bigger, chromoly shafts for the front and a regear to 4:88's with a selectable locker ( ARB or OX is what I recommend since I am going that route)

Your 8.8 is a good axle... I really can't say in the way of upgrades as I have done little research on them to date.
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RR SYE, Tatton CV, MML, BL, TT, Dynomax Exhaust
Hella Lighting: Driving, Fogs and H4 E-Codes
NOPE! ... and NEVER will be...
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Old 11-29-2012, 09:48 AM   #5
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thank you so much!!
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Old 11-29-2012, 09:49 AM   #6
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will the 4.88 w the 35s still be a good gearing for street driving?? or is that just a good trail gear?? i was thinking 456 would be for the 35s....
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Old 11-29-2012, 10:40 AM   #7
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Quote:
Originally Posted by pwrstrok250 View Post
will the 4.88 w the 35s still be a good gearing for street driving?? or is that just a good trail gear?? i was thinking 456 would be for the 35s....
Go right to 4.88 which is ideal (!) for the 4.0/35"/5-speed combination. I ran my TJ like that for years and was thankful I had the 4.88 gearing every day I drove it. Most of its time was spent on the highway where the RPMs were just right to handle that big & heavy of a tire.
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Old 11-30-2012, 07:40 AM   #8
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thanks you guys. i was able to catch yukon before my order was processed. I changed the order to 4.88!! and a grizzly locker for the 8.8.
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Old 11-30-2012, 07:44 AM   #9
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i put the smitty bilt tube fenders, w flare on. 35s will clesr easily, but i will hVE TO BUY those coil spacer pucs, to get 37s if i go that route.

and

had a pleasent surprise. the jeep i just bought on ebay, and had transpoerted
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Old 11-30-2012, 07:46 AM   #10
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to my house. never really poked around, because it was already a done deal online. any way. i knew it had long arm lift. but its also got adjustable rear uppers, and a SYE and CV drive shaft already!!!!!!
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Old 11-30-2012, 07:48 AM   #11
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front has adj track bar, but not rear yet. . but my things to purchase list is shrinking!!!
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Old 12-06-2012, 12:37 PM   #12
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Go right to 4.88 which is ideal (!) for the 4.0/35"/5-speed combination. I ran my TJ like that for years and was thankful I had the 4.88 gearing every day I drove it. Most of its time was spent on the highway where the RPMs were just right to handle that big & heavy of a tire
I run 4.88 with my 37" Nitto Mud Grapplers and i too travel the highway a ton. I'm thankful everyday i went with those gears. She's at home on the highway as she is the trail. You'll be happy you did.
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Old 12-20-2012, 08:17 PM   #13
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thanks everyone. i got the 4.88 installed. i have 33 currently, but am going to 35s. gonna see how that feels, may go up to the 37s.

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98 Chili Pepper TJ, 4.0, 5 speed, Smittybily xrc armor. 4 inch lift. 35 Mickey Thompson MTZ. Black Soft 8s. Smittybilt tube fenders. 1 ton steering upgrade. SYE. CV shaft. Adj. Trac Bars front and rear. Adj rear upper control arms. Ford 8.8 rear w/ artec industies truss/tj swap kit. 4.88, Yukon Grizzly locker. Rubi 44 front, w 4.88, Artec Industies truss, Inner c braces, Eaton E-locker, Chrome molly axle shafts. Throttle Body Spacer. Cold air intake. Headers.
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