v6/cobra rear end

ray1593 · December 15th, 2011, 11:15 PM

ok, thanks for all the information and tips guys

slonison · March 20th, 2012, 02:38 PM

I'm interest how this ended up going.

ray1593 · March 20th, 2012, 11:40 PM

I havnt done the swap yet, Its going to be a while because Im doing a complete rebuild on the motor, all forged, cams, etc. etc.

cobra241 · March 20th, 2012, 11:47 PM

Like they said, if you plan on drag sra, if you would rather do circuit racing, and if its a daily driver, I've read irs is way to go, tho it can't handle as much HP stock, but it can be upgraded, I decided on irs and its getting swapped out this weekend, it is also out of a 01 cobra like your donor

slonison · March 21st, 2012, 08:46 AM

In preparation for doing my cobra swap, can I swap the IRS early and have it still compatible with my drive-shaft and 3.8 auto in the meantime? It's my dd until summer.

cobra241 · March 21st, 2012, 06:35 PM

That I'm not sure on since you have a 7.5 rear, if you already had a 8.8 in it, then yes

xtreme 2 · March 22nd, 2012, 10:26 AM

Swap the driveshaft too and you will be fine. Are you a 5speed or auto right now?

slonison · March 22nd, 2012, 11:28 AM

I'm auto v6, going to Cobra (yes, yes and yes are the answers to any and all questions regarding this.)

Currently I'm running bone stock (driveshaft, rear-end 7.5)

I've heard that an 8.8 will work fine for the cobra. But the cobra also comes stock with an IRS.

So my dilemma is, if I need to swap the driveshaft to run the IRS, why not just throw in the 8.8 and call it a day?

Is my assumption incorrect that my driveshaft on the 7.5 will work on the 8.8?

cobra241 · March 22nd, 2012, 10:18 PM

Well, a gt 8.8 is solid axle, the cobra's are still 8.8 just irs, the 99-01 were 28 spline for the half shafts, 03-04 were 31, so if a regular 8.8 will bolt right up, then a cobra will too, I'm just not familar with 99-04 v6s, the cobra upper mounts will mount in where the gt's had traction shocks, does yours already have these? If so it should be a peice of cake, ill be able to answer more questions after tommrow night, my sra is getting swapped for 01 cobra, oh one last thing, for 03-04 swap you also have to change the u joint or something like that

cobra241 · March 22nd, 2012, 10:19 PM

Hope that answered what you were asking

PsnSnake_19 · March 22nd, 2012, 10:33 PM

My Gt never wheel hoped my cobra does like a mofo

cobra241 · March 24th, 2012, 03:07 AM

Well so far everything lines up, both rears are out, we are in process of switching diffs, and changing gears, this is probally the hardest job I've done, and honestly its not bad, just time consuming

March 22nd, 2012, 10:26 AM	#27
xtreme 2 Hardcore Enthusiast 2001 v6 premium Join Date: Nov 2008 Location: Tulsa, OK Posts: 1,340 Blog Entries: 1 iTrader: 0 reviews	Swap the driveshaft too and you will be fine. Are you a 5speed or auto right now? __________________ Screw it, coming to play with the big boys... 5.4L Vortech COMING SOON!

March 22nd, 2012, 10:33 PM	#31
PsnSnake_19 Hardcore Enthusiast 2001 cobra Join Date: Aug 2010 Location: tampa Posts: 2,251 iTrader: 0 reviews	My Gt never wheel hoped my cobra does like a mofo __________________ SVT all day! Next mods: Mickey thompson street radials, new wheels, gears and tuner, then turboed by 2013

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December 15th, 2011, 11:15 PM	#21
ray1593 Regular 2001 Mustang Join Date: Sep 2010 Posts: 178 iTrader: 3 reviews	ok, thanks for all the information and tips guys

March 20th, 2012, 11:40 PM	#23
ray1593 Regular 2001 Mustang Join Date: Sep 2010 Posts: 178 iTrader: 3 reviews	I havnt done the swap yet, Its going to be a while because Im doing a complete rebuild on the motor, all forged, cams, etc. etc.

March 20th, 2012, 11:47 PM	#24
cobra241 Regular 2002 mustang gt Join Date: Mar 2012 Posts: 227 iTrader: 0 reviews	Like they said, if you plan on drag sra, if you would rather do circuit racing, and if its a daily driver, I've read irs is way to go, tho it can't handle as much HP stock, but it can be upgraded, I decided on irs and its getting swapped out this weekend, it is also out of a 01 cobra like your donor

March 21st, 2012, 06:35 PM	#26
cobra241 Regular 2002 mustang gt Join Date: Mar 2012 Posts: 227 iTrader: 0 reviews	That I'm not sure on since you have a 7.5 rear, if you already had a 8.8 in it, then yes

March 22nd, 2012, 10:18 PM	#29
cobra241 Regular 2002 mustang gt Join Date: Mar 2012 Posts: 227 iTrader: 0 reviews	Well, a gt 8.8 is solid axle, the cobra's are still 8.8 just irs, the 99-01 were 28 spline for the half shafts, 03-04 were 31, so if a regular 8.8 will bolt right up, then a cobra will too, I'm just not familar with 99-04 v6s, the cobra upper mounts will mount in where the gt's had traction shocks, does yours already have these? If so it should be a peice of cake, ill be able to answer more questions after tommrow night, my sra is getting swapped for 01 cobra, oh one last thing, for 03-04 swap you also have to change the u joint or something like that

March 22nd, 2012, 10:19 PM	#30
cobra241 Regular 2002 mustang gt Join Date: Mar 2012 Posts: 227 iTrader: 0 reviews	Hope that answered what you were asking

March 24th, 2012, 03:07 AM	#32
cobra241 Regular 2002 mustang gt Join Date: Mar 2012 Posts: 227 iTrader: 0 reviews	Well so far everything lines up, both rears are out, we are in process of switching diffs, and changing gears, this is probally the hardest job I've done, and honestly its not bad, just time consuming

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