It's not terribly difficult. Helps if you know someone with an SRA that wants an IRS though! The cat-back has to be swapped along with the rear end because they are rear axle specific. If you can find a Mach 1 owner who wants an IRS then the swap is damn near a one-for-one deal. There are some minor differences though...Maybe I will consider swaping to a SRA. Is it an easy swap?
Try some stickier rubber and some stiffer rear shocks first. That's what I did with mine and it helped, but did not eliminate my hop. I have a set of the MM sub-frame bushings at home in the box right now. I bought them before researching how to install them. They shall forever remain in the box as far as I'm concerned.This is a hard decision. I have a buddy that will swap me rearends but the cobra is my daily driver and I have my fox body to race. I just cant stand the wheel hop in that vert, it is by far the worst I have ever seen. I guess I will try the bushings first and get some drag radials and see if there is an improvement.
I do not care why all the professionals use SRA. They use a lot of stuff I would never consider. The real question is for the OP: is it gonna be a trailer car or a daily driver?Not trying to pick a fight KT, but if the IRS is so superior then why do all the professional road race Mustangs use modified SRA's?
I agree that my current IRS is way better around off-camber and rough corners when compared to the SRA in my '02 GT though.
Yeah, like buy a Corvette instead. At least GM can design an IRS correctly.There are ways to get rid of wheel hop without doing a cheesy f'n SRA swap...
Nothing, all stock right down to the F1's.That is a lot of wheel hop! What tires were you on? What was done to the IRS when that video was taken?
yes i weight all the parts swapped out and it was dead on 160lbs. lighter , i just did mine but still haven driven it yet to see if i like it or not i got about about 1000 bucks on it all. after seeling some of my irs parts.I guess if you believe the advertisements....
Here get one of these too while you're at it!
Plus unless you're going to do the work yourself the installation of the kit mentioned above is a MAJOR PITA! Most guys report 8 hours just to install the IRS sub-frame bushings alone.
Remember, the more you do to increase the traction potential of the IRS, the more strain you put on the other components. You'll have to start dealing with the other weak areas.... like the factory half-shafts:
..and the weak 10-spline input shaft.
Last but not least switching to a SRA shaves almost 150lbs of weight from this pig of a car.
U.M.
but the 31 spl. axles beats the wimpy shaft pic showed above.Stiffer shocks, IRS brace from the 03/04 and some decent tires will help. I am running Bilsteins, 03/04 brace, and a set of 315 GS D3's out back and now all I do is spin.
Just an FYI, spinning your tires is better than hop. Spinning your tires is better than gripping, for it is when you get that instant grip, that is when you will break something. You can still break an 8.8.
Not trying to pick a fight KT, but if the IRS is so superior then why do all the professional road race Mustangs use modified SRA's?
I agree that my current IRS is way better around off-camber and rough corners when compared to the SRA in my '02 GT though.
U.M.
IMO the biggest thing to change is your tires. like someone said, if they cant spin, they cant hop. I have Nitto555R out back and i can barely get loose in a 1st gear roll. launching is almost better than my buddies 06 WRX (20g turbo+support, race tranny, better axles, KDW2 all around) out of the hole.
i would never go back to solid rear on a street car ever again. i love being able to go almost WOT over any surface without the rear end skipping all around on me like the GT used to do. even the slightest throttle and a itty bitty pothole and you got whiplash. Cobra, same road, more throttle, smooth as butter. i love how after i exit the corner, i get on it, the entire rear squats and sticks, and i jump out of the hole basically. i love how firmly planted i feel during the turn and out of it, no matter the condition. only in a pure drag only setup would i consider going full on Solid Rear.
My GT had the SRA, my Cobra has the IRS. My experience with these two cars was that the IRS is vastly superior to the SRA.
The majority of your high end imports like BMW are sporting IRS suspension.
Last but not least switching to a SRA shaves almost 150lbs of weight from this pig of a car.
U.M.
I think Ford is holding on to the known rear (8.8) that can hold up to abuse and they don't want to get rid of the machining, cheap build, and durability of it, you know how ford is, they never want to take the next leapi think ford is the last of the domestics to still utilize solid-rear on their RWD Car lineup.
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