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» Northern California Ford Owners     » Automotive   » Tech Talk   » 31 Spline upgrade

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Author Topic: 31 Spline upgrade
NEIGHT
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I been looking at this for a while but I'm not shure if it's a good kit or not.

http://www.ebay.com/itm/FORD-8-8-YUKON-DURAGRIP-POSI-31-SPLINE-AXLE-PACKAGE-1979-1993-MUSTANG-5-LUG-/270934986819?pt=Motors_Car_Truck_Parts_Accessories&hash=item3f14fbd043&vxp=mtr

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-Savage Habits-
1992 Summer Edition
1986 Hatch- catfish killer
1964 Impala hard top

Posts: 18532 | From: EA$T $IDE REDWOOD CITY | Registered: Nov 2008  |  :
SwEeT03Gt
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yukon is really big with trucks like extreme off roading stuff

i say go for it

[ November 27, 2012, 03:48 PM: Message edited by: SwEeT 03 Gt ]

Posts: 4484 | From: -NicKlE n DiMe- | Registered: Sep 2010  |  :
Greasy
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If you're going to build a rear end do it once, ditch those C-clips and go with 9" ends.

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'93 Cobra-Coyote Powered
'03 DSG Cobra
'13 Dodge Cummins
'14 Rubicon X

Posts: 3272 | From: North Dallas | Registered: Jan 2005  |  :
NEIGHT
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C-clips? 9"? You mean a 9" rear-end? I'm ok with 8.8 not building a track car just a fast DD.

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-Savage Habits-
1992 Summer Edition
1986 Hatch- catfish killer
1964 Impala hard top

Posts: 18532 | From: EA$T $IDE REDWOOD CITY | Registered: Nov 2008  |  :
Greasy
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The 9" ends get welded onto your 8.8 housing eliminating the C-clips. So you'll still have the 8.8.

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'93 Cobra-Coyote Powered
'03 DSG Cobra
'13 Dodge Cummins
'14 Rubicon X

Posts: 3272 | From: North Dallas | Registered: Jan 2005  |  :
Duncan Motors
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it a gd upgrade for the 8.8 but but not heavily needed on any street car
Posts: 6310 | From: Vallejo | Registered: Sep 2006  |  :
Duncan Motors
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the 9 inch ends is what i meant. and only a experienced rear end shop should do this as well. as for a 31 spline any posi 8.8 truck at the junk yard has them, then get the axels thru north race car brackets place. i think they really had the best deals on the axles with the correct hub centric stuff if u wanted.
Posts: 6310 | From: Vallejo | Registered: Sep 2006  |  :
coupedup
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Or you can just run some C-Clip Eliminators with that setup in the link that you provided. Not a bad price either on that stuff. It would would be a pretty damn tough rear-end.

[ November 27, 2012, 06:34 PM: Message edited by: Nifty50 ]

Posts: 4406 | From: Ca | Registered: May 2010  |  :
Duncan Motors
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they like to leak
Posts: 6310 | From: Vallejo | Registered: Sep 2006  |  :
Boss 327
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quote:
Originally posted by Duncan Motors:
they like to leak

Not if you seal them right.

quote:
Originally posted by NEIGHT:
I been looking at this for a while but I'm not shure if it's a good kit or not.

http://www.ebay.com/itm/FORD-8-8-YUKON-DURAGRIP-POSI-31-SPLINE-AXLE-PACKAGE-1979-1993-MUSTANG-5-LUG-/270934986819?pt=Motors_Car_Truck_Parts_Accessories&hash=item3f14fbd043&vxp=mtr

Yukon is a good axle brand. I ran their hardened 28 spline axles for a few years.

[ November 27, 2012, 07:44 PM: Message edited by: Boss 327 ]

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"You'll never truly understand building engines until you can make power N/A. FI overshadows an engines defficiency." Al Papito

Posts: 1789 | From: East Bay | Registered: May 2009  |  :
NEIGHT
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So do stock run c-clips? Is it a worthy kit or should I go FRPP? [Confused]

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-Savage Habits-
1992 Summer Edition
1986 Hatch- catfish killer
1964 Impala hard top

Posts: 18532 | From: EA$T $IDE REDWOOD CITY | Registered: Nov 2008  |  :
Boss 327
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quote:
Originally posted by NEIGHT:
So do stock run c-clips? Is it a worthy kit or should I go FRPP? [Confused]

How fast do you plan on going?

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"You'll never truly understand building engines until you can make power N/A. FI overshadows an engines defficiency." Al Papito

Posts: 1789 | From: East Bay | Registered: May 2009  |  :
NEIGHT
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quote:
Originally posted by Boss 327:
quote:
Originally posted by NEIGHT:
So do stock run c-clips? Is it a worthy kit or should I go FRPP? [Confused]

How fast do you plan on going?
Mid-high 10's

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-Savage Habits-
1992 Summer Edition
1986 Hatch- catfish killer
1964 Impala hard top

Posts: 18532 | From: EA$T $IDE REDWOOD CITY | Registered: Nov 2008  |  :
coupedup
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All you need to know right here;

http://www.popularhotrodding.com/hotnews/0910phr_1993_big_block_ford_mustang/viewall.html

Posts: 4406 | From: Ca | Registered: May 2010  |  :
Boss 327
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At 10.99 or faster you have to eliminate the c-clips per NHRA rule book.

So you can get 9in ends put on your 8.8 (which I recommend) or get c-clip eliminators from Strange (Which I run but can be a pain in the ass when you have to take the axles out) regardless of which route you choose, they both require cutting of the axle housing. Any 31 spline non c-clip axles of your choice (I recommend Strange) and an 03-04 cobra diff will be a good street setup.

[ November 27, 2012, 10:28 PM: Message edited by: Boss 327 ]

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"You'll never truly understand building engines until you can make power N/A. FI overshadows an engines defficiency." Al Papito

Posts: 1789 | From: East Bay | Registered: May 2009  |  :
NEIGHT
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Is it unsafe to run C-clips at those E.T's? I don't race track.

--------------------
-Savage Habits-
1992 Summer Edition
1986 Hatch- catfish killer
1964 Impala hard top

Posts: 18532 | From: EA$T $IDE REDWOOD CITY | Registered: Nov 2008  |  :
NEIGHT
¯
Member # 8741

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Can you guys point me in the right direction for c-clip eliminators N stuff just try to keep it around ~$600 for all please.

--------------------
-Savage Habits-
1992 Summer Edition
1986 Hatch- catfish killer
1964 Impala hard top

Posts: 18532 | From: EA$T $IDE REDWOOD CITY | Registered: Nov 2008  |  :
Boss 327
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quote:
Originally posted by NEIGHT:
Can you guys point me in the right direction for c-clip eliminators N stuff just try to keep it around ~$600 for all please.

Look up Strange Engineering. Should have everything you need except diff. Just get a stock 03-04 cobra one.

--------------------
"You'll never truly understand building engines until you can make power N/A. FI overshadows an engines defficiency." Al Papito

Posts: 1789 | From: East Bay | Registered: May 2009  |  :
Boss 327
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quote:
Originally posted by NEIGHT:
Is it unsafe to run C-clips at those E.T's? I don't race track.

If you hook hard and the clips break, your whole axle with wheel, tire and brakes will come off.

It's a safety thing. Like having a roll cage, harness belts, ect.

[ November 27, 2012, 11:42 PM: Message edited by: Boss 327 ]

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"You'll never truly understand building engines until you can make power N/A. FI overshadows an engines defficiency." Al Papito

Posts: 1789 | From: East Bay | Registered: May 2009  |  :
REDLIGHTING
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I think lee had a built rear end for sale.

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1992 coupe YSI, DART,
225 TFS HIGH PORTS
04 mystichrome convertible

2006 GMC sierra slt crew

Posts: 441 | From: sac | Registered: Sep 2011  |  :


 
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