IRS to SRA

99cobra! · May 26th, 2009, 09:24 PM

Well time has come again for yet another mod, coming in July that is.

Mods are as followed:

-Solid Rear out of a 98 GT
-Moser 31 Spline Axles
-Eaton 31 Spline Limited Slip Differential
-FRPP Aluminum Driveshaft
-GMS Differential Cover
-Axle Brace

What do you guys think about that set up?

Fluffy The Rhino · May 26th, 2009, 09:42 PM

Can I have the axles and drive shaft?

: D

ChrisJ · May 26th, 2009, 09:43 PM

Rear end will be narrower then a 99-04...JFYI

Mustang RacR94 · May 26th, 2009, 10:22 PM

once you change the axles, the rear shouldnt really make much a a difference in length shouldnt it.

Mustang RacR94 · May 26th, 2009, 10:24 PM

I mean if you buy the diff, and axles for a 99 up, I think its all the same, not sure thu

wraitherx · May 26th, 2009, 10:51 PM

Originally Posted by ChrisJ

Rear end will be narrower then a 99-04...JFYI

+1, Ive got a SRA from a 98 and it is shorter. Not really by alot but it is.

99cobra! · May 26th, 2009, 11:22 PM

Originally Posted by wraitherlx

+1, Ive got a SRA from a 98 and it is shorter. Not really by alot but it is.

Can you see it at all or do you have to really look hard to see it? The 94 to 98 was recommended to me, said it was better for the cobra to replace the IRS.

99blkcobra · May 26th, 2009, 11:58 PM

got my lower control arms and it feels good, just need to install the upper

wraitherx · May 26th, 2009, 11:58 PM

put it like this, without wheels on you can tell, with wheels on I wish that I had gone with some 10.5's or 10's

Diabeetus · May 27th, 2009, 03:47 AM

Originally Posted by Mustang RacR94

once you change the axles, the rear shouldnt really make much a a difference in length shouldnt it.

You cant put axles for a 99-04 in a 98 housing caus the housing is .75 inches shorter on each side so yes it would make a difference.

Originally Posted by 99cobra!

Can you see it at all or do you have to really look hard to see it? The 94 to 98 was recommended to me, said it was better for the cobra to replace the IRS.

Yes you can tell the difference in length. I dont know why anyone told you a 94-98 housing was better. If I could have I would have gone with a 99 or newer housing cause of the length issue. Mine is from a 98 Gt. You will also need shocks cause the shocks from your IRS setup will not fit on the SRA because the lower bolts on the shocks are different sizes. PM me if you have any questions.

99cobra! · May 27th, 2009, 09:38 AM

Thanks for the input, I will explore my options a little more and see what is best. So DIABEETUS, how is yours holding up? What is the highest in RPMs you have launched yours?

99cobradroptop · May 27th, 2009, 11:30 AM

Deffinately get wheel spacers, i have a 96 GT rear in my 99 cobra and i run an inch spacer with stock rims.

AzSonicSnake · May 27th, 2009, 11:38 AM

the 98 housing will allow you to run a wider rim, but personally i would stick with a 99+ axle. i run a 10" wide rim with a 11.5 slick on it and have no issues at all...

wraitherx · May 27th, 2009, 12:28 PM

Originally Posted by AzSonicSnake

the 98 housing will allow you to run a wider rim

+1, if you are going to get it then just go with some either 10" or 10.5" rims.

wraitherx · May 27th, 2009, 12:29 PM

Hey Diabeetus, change your sig

We changed the name

Diabeetus · May 27th, 2009, 04:42 PM

Originally Posted by 99cobra!

Thanks for the input, I will explore my options a little more and see what is best. So DIABEETUS, how is yours holding up? What is the highest in RPMs you have launched yours?

I havent launched on a drag strip yet cause the car isnt ready, but on the street Ive dumped it at about 5k and it hooks like no ones business. No hop at all. I will tell you this, its NOISY! I have tubular LCAs with poly bushings, and adjustable uppers with poly bushings on the housing and solid spherical bushings on the chassis side. You definetly hear and feel everything, but the car launches straight and hard. If it werent for the fact that I had the uppers left over from a previous mustang, I would have had the poly bushings on the chassis side, and the spherical bushings on the housing side.

Originally Posted by wraitherlx

Hey Diabeetus, change your sig We changed the name

Will do!

99blkcobra · May 27th, 2009, 04:50 PM

Originally Posted by Diabeetus

I havent launched on a drag strip yet cause the car isnt ready, but on the street Ive dumped it at about 5k and it hooks like no ones business. No hop at all. I will tell you this, its NOISY! I have tubular LCAs with poly bushings, and adjustable uppers with poly bushings on the housing and solid spherical bushings on the chassis side. You definetly hear and feel everything, but the car launches straight and hard. If it werent for the fact that I had the uppers left over from a previous mustang, I would have had the poly bushings on the chassis side, and the spherical bushings on the housing

why isnt ur car ready?

Diabeetus · May 28th, 2009, 03:09 PM

Originally Posted by 99blkcobra

why isnt ur car ready?

There are a few things I want before I take it out so I get the best results. Wheels, tires, linelock, and two step are some things I want before I race it. I dont want to chew up my street tires and I want to be able to do a proper burnout and for that I need the linelock. Its kind of back-burnered right now while I get my business up and running. But after that, Ill be doin lots to the car.

AzSonicSnake · May 28th, 2009, 03:10 PM

hopefully your planning on using the slp linelock. that kit its tits!

Diabeetus · May 29th, 2009, 03:40 AM

Originally Posted by AzSonicSnake

hopefully your planning on using the slp linelock. that kit its tits!

For sure. Most guys I know who race use that one.

May 26th, 2009, 09:24 PM	#1
99cobra! Regular 1999 Mustang Cobra Not Yet Join Date: Oct 2008 Location: North Carolina Posts: 255 iTrader: 0 reviews	IRS to SRA Well time has come again for yet another mod, coming in July that is. Mods are as followed: -Solid Rear out of a 98 GT -Moser 31 Spline Axles -Eaton 31 Spline Limited Slip Differential -FRPP Aluminum Driveshaft -GMS Differential Cover -Axle Brace What do you guys think about that set up? __________________ MM COBRA CLUB #19 "Real cars aren't powered by their front wheels, they lift them"

May 26th, 2009, 09:42 PM	#2
Fluffy The Rhino Bearer of Bad News I has mustang and legacy. Slower than my Ruger. Join Date: Sep 2007 Location: The Fuckening Posts: 2,392 iTrader: 0 reviews	Can I have the axles and drive shaft? : D __________________ ~MOD NUTSWINGER~ My Tongue Soothes Razorburn STOPSAYINGFAIL.COM EVERY FART IS A GAMBLE Just Think Of Me As A White Blood Cell.

May 26th, 2009, 09:43 PM	#3
ChrisJ RLY SRS Join Date: Aug 2005 Location: Ft. Meade, MD Posts: 36,743 Blog Entries: 4 iTrader: 9 reviews	Rear end will be narrower then a 99-04...JFYI __________________ 2008 Acura TL Type-S - 2008 EB Ford Expedition - 2002 Boosted GT - Sold Facebook Google+

May 26th, 2009, 10:22 PM	#4
Mustang RacR94 MM Fanatic 03 mach 1 13.2@109 Join Date: Dec 2006 Location: Mooretownship,PA kinda close to allentown Posts: 3,041 iTrader: 0 reviews	once you change the axles, the rear shouldnt really make much a a difference in length shouldnt it. __________________ 2003 Mach 1, 5 speed U.S. Army - 11B "And on the 8th day god created the infantry and all hell stood at attention"

May 26th, 2009, 10:24 PM	#5
Mustang RacR94 MM Fanatic 03 mach 1 13.2@109 Join Date: Dec 2006 Location: Mooretownship,PA kinda close to allentown Posts: 3,041 iTrader: 0 reviews	I mean if you buy the diff, and axles for a 99 up, I think its all the same, not sure thu __________________ 2003 Mach 1, 5 speed U.S. Army - 11B "And on the 8th day god created the infantry and all hell stood at attention"

May 26th, 2009, 11:58 PM	#8
99blkcobra Hardcore Enthusiast 1999 cobra Join Date: Sep 2007 Location: Las Vegas Posts: 1,743 iTrader: 2 reviews	got my lower control arms and it feels good, just need to install the upper __________________ 1999 Mustang Cobra (rebuilding, someday...) 1996 civic dd [/SIZE] MM Cobra Club #3 Last edited by 99blkcobra; May 27th, 2009 at 01:40 AM.

May 26th, 2009, 11:58 PM	#9
wraitherx Moderator '99 SVT Cobra Join Date: Nov 2006 Location: Virginia Beach, VA Posts: 9,567 iTrader: 11 reviews	put it like this, without wheels on you can tell, with wheels on I wish that I had gone with some 10.5's or 10's __________________ BUILD 2 IN PROGRESS

May 27th, 2009, 09:38 AM	#11
99cobra! Regular 1999 Mustang Cobra Not Yet Join Date: Oct 2008 Location: North Carolina Posts: 255 iTrader: 0 reviews	Thanks for the input, I will explore my options a little more and see what is best. So DIABEETUS, how is yours holding up? What is the highest in RPMs you have launched yours? __________________ MM COBRA CLUB #19 "Real cars aren't powered by their front wheels, they lift them"

May 27th, 2009, 11:30 AM	#12
99cobradroptop Regular 99 Cobra Vert. Join Date: Jan 2008 Location: Annapolis, MD Posts: 171 iTrader: 1 reviews	Deffinately get wheel spacers, i have a 96 GT rear in my 99 cobra and i run an inch spacer with stock rims. __________________ -Sold- 1999 Mustang Cobra Convertible 2010 Harley Davidson Sportster "Forty Eight" XL 1200X

May 27th, 2009, 11:38 AM	#13
AzSonicSnake 2009 ROTY 2003 SVT Cobra 11.07@127 Join Date: Aug 2008 Location: North Phoenix,AZ Posts: 5,716 iTrader: 1 reviews	the 98 housing will allow you to run a wider rim, but personally i would stick with a 99+ axle. i run a 10" wide rim with a 11.5 slick on it and have no issues at all... __________________ MM Cobra Club #25 My Autolog Profile

May 27th, 2009, 12:29 PM	#15
wraitherx Moderator '99 SVT Cobra Join Date: Nov 2006 Location: Virginia Beach, VA Posts: 9,567 iTrader: 11 reviews	Hey Diabeetus, change your sig We changed the name __________________ BUILD 2 IN PROGRESS

May 28th, 2009, 03:10 PM	#19
AzSonicSnake 2009 ROTY 2003 SVT Cobra 11.07@127 Join Date: Aug 2008 Location: North Phoenix,AZ Posts: 5,716 iTrader: 1 reviews	hopefully your planning on using the slp linelock. that kit its tits! __________________ MM Cobra Club #25 My Autolog Profile

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