Dana 44 or 8.8? - JeepForum.com
 
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post #1 of 11 Old 07-19-2010, 03:11 PM Thread Starter
scothill
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Dana 44 or 8.8?

I am about to put 35's on my TJ and know its time for the Dana 35 to find a new home. For about the same money I can buy a Dana 44 (stock) or a 8.8 with a slightly better than stock axle. What am I better off with? I probably will never go over 35's and do moderate wheeling.

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post #2 of 11 Old 07-19-2010, 03:39 PM
never monday
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This is a common topic so I thought I'd post some facts I've found out about the 3 main options.
Super 35, Rubicon 44 and Ford 8.8
Please correct as necessary.

Super 35
semi float c-clip shafts
**NOW AVAILABLE**
Superior c-clip eliminator kit
This converts the Super35 to a 44jr.
That's right it removes the c-clips and bolts in the shafts. This is the same assembly design as the 44. With a 7.5" ring gear it's 1" small than a 44. Hence the name 44jr.
gear ratio options = 3.55, 3.73, 4.10, 4.56, 4.88
Carrier break = 3.31 / 3.55
Locker choices
Detroit, OX, ARB, Auburn ECTED
Ring gear diameter = 7.5625"
Ring gear bolts = (8) 3/8 x 24 RH - NOTE: 7/16" used on later model TJs
Low pinion
Pinion shaft diameter = 1.406"
Pinion shaft spline count = 26
Axle shaft diameter = 1.30"
Axle shaft spline count = 30
Axle tube 2.50" x .250 wall
WMS-WMS = approximately 60.5"
5 on 4.5" bolt pattern
Cost
kits run from 700-1300
labor $250 - $500
Build time <6 hrs
bolt in upgrade

Rubicon/Sahara/Unlimited 44
(XJ/MJ 44 is similar but leaf sprung)
semi float non c-clip style shafts
Standard rear axle used on all Rubicon model TJs
Gear ratio options, 3.08, 3.31, 3.54, 3.73, 4.10, 4.56, 4.88, 5.13, 5.38, 5.89
I'm not sure all ratios are available for the R44.
Lockers,
Detroit, ARB, OX, Spool, all lunchbox lockers, factory Tru-lok
Ring gear diameter = 8.5"
Ring gear bolts = (10) 7/16" x ??
Low pinion
Pinion shaft diameter = 1.376"
Pinion shaft spline count = 26
Axle shaft diameter = 1.30"
Axle shaft spline count = 30
Axle tube 2.50" x .250 wall
WMS-WMS = approximately 60.5"
5 on 4.5" bolt pattern
standard disk brakes on R44, drums on others
Cost,
used axle run 700-1300
build time, <6hrs
bolt in swap

Ford Explorer 8.8
semi float c-clip style axle, leaf sprung
C-clip eliminators and Super88 kits available
gear ratios available
2.73, 3.08. 3.27, 3.31, 3.55, 3.73, 3.90, 4.10, 4.56, 4.88, 5.13, 5.71, 6.14
No carrier break
Lockers available,
Detroit, Spool, mini-spool, OX, ARB, Auburn ECTED, Eaton E-locker, All lunchbox lockers
O.D. of tubes: 3.250".
Tube thickness: .188, there is rumor of .250
(the larger tube gives 5/8" of lift and 5/8" lower clearance under tubes.)
(Wheelin98TJ hates the math error here. The interweb has 5/8” as the accepted value of lift. Even when it’s only 3/8”)
Ring gear diameter: 8.800".
Ring gear bolts: 7/16" dia. (qty. 10).
Pinion diameter: 1.625
Pinion spline count 30
Axle shaft: 1.31
Axle spline count 31
Overall width 59.625" (the F8.8 is .950" narrower then a TJ Dana 35).
I've been told the c-clip eliminator kit increases the track 1"

Cost,
complete axles can be had for $100 with a LSD and disk brakes.
This conversion will require welding and fabrication. Plus many additional parts.
Estimated build cost >$1000-$1200
build time >8 hrs

Ground clearance;
Measured on 35" tires on a concrete shop floor
axle - under tube - under diff
35 - 14 7/8 - 11 1/4
44 - 14 7/8 - 10 7/8
8.8 - 14 1/2 - 10 1/8

There are postings of axle shaft failure torque rating. I won't repost them here because it doesn't represent what were discussing accurately.
Add on;

Toyota Tacoma 2WD, non Pre-Runner 1995-2001
I'm still gathering details.
8" ring gear
Third member design
ARB, Detroit, Toyota E-Locker, Spool
Lot's of gear ratios
5x4.5 bolt pattern
no crommo shafts available I can find.
Several aftermarket housings available.

A Grand Cherokee or ZJ Dana 44a is not an option for installation in a TJ
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post #3 of 11 Old 07-19-2010, 04:10 PM
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There is a 3.73 rear D44 inthe JF classifies now.

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post #4 of 11 Old 07-19-2010, 06:16 PM
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9inch
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post #5 of 11 Old 07-19-2010, 06:32 PM
SolidBrass
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Nice work never monday...

I've wanted this info compared for a while.

What ratio would be best for 33"-35" (33's for a while maybe 35 some day.... doubt more)

Last edited by SolidBrass; 07-19-2010 at 06:54 PM.
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post #6 of 11 Old 07-20-2010, 12:42 PM Thread Starter
scothill
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That's alot of info. So stock 44 or stock 8.8, with cost being equal?
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post #7 of 11 Old 07-20-2010, 12:43 PM
never monday
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Quote:
Originally Posted by scothill View Post
that's alot of info. So stock 44 or stock 8.8, with cost being equal?
44
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post #8 of 11 Old 03-04-2011, 02:19 AM
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Great Info

Thanks for the great info.
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post #9 of 11 Old 03-04-2011, 04:31 AM
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Screw rubicon 44 it's 35 parts with alil stronger anyways it's not a true 44
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post #10 of 11 Old 03-04-2011, 05:38 AM
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Quote:
Originally Posted by jeepkid46 View Post
Screw rubicon 44 it's 35 parts with alil stronger anyways it's not a true 44

ΜΟΛΩΝ ΛΑΒΕ

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Jeepinmichguy is a jerk.
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How about this, if you had the Jeep Spirit, you wouldn't abuse the rest of us trying to enjoy a nice day out wheeling by bringing your brokeass broken down junkyard crap out to play where it can't handle it?
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you all have nice rigs, stop being f****** a**holes.
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post #11 of 11 Old 03-04-2011, 06:54 AM
rda616
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I just went 44 on mine! The 8.8 is easier to find, but would have cost me more in the long run. And i'm not sure about the super 88 kit but at least in the drag cars I have built c-clip eliminators aren't good for street use. But as stated before not sure about superior. I have a set of their axles in my 44 and have nothing but good to say about the axles and the service I received from superior. I got my 44 out of a mj at lkq for $135.00 out the door, but had to weld brackets on. Got mine on ebay for $230.00 shipped .
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dana 44 , d44 , ford , 8.8 , swap , dana 35 , d35 , advice , help , TJ

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