Any sold axel regrets ??

[SlowSVT]

even upgrading your IRS there is still a chance that it could break. when they break its expensive. you could build a nice SRA for with all the good stuff and sell your IRS and come out with money in your pocket.

if the IRS was so great then why does ford not use them in the shelby, steeda, roush, saleen, or even a mustang gt.

IRS are good by design however fords IRS is weak and not fully developed well like they have in the vetts and vipers.

my advise is to build an irs with good suspension and have lots of fun.

Yes, the IRS is a more complex suspension and is more prone to breaking then a stick axle but that happens almost exclusively from wheel hop, massive clutch dumps and hard launches. I laugh when someone can’t understand why the OEM driveline breaks under those circumstances. In case you haven’t noticed Ford is the lone holdout for having a straight axle in their performance cars as both GM and Chrysler employ an IRS. Ford stuck with the SRA in the S197 due to cost and weigh reasons only. It more likely than not the next generation of performance Mustangs will drop the SRA as well for better road manners.

 

[05satinGT]

I blew the pumpkin on my 05 CTS-V. The only time there is wheel hop is when the tires are fighting to hook. If your trying to do a burnout and are spinning the tires pretty good, wheel hop shouldn't exist. If your have DR's and nail is then this is where you would see wheel hop. OP my buddy has nitto NT05r's on his car and when he mashes it from a 40 roll it just hooks and goes. So there are a ton of thing factoring in. From what I read your thinking more SRA because you don't want to break the IRS and not because your looking to make it a drag car more or less.

When I blew the rear in the V it was wheel hopping like a mother ****er and I should have let off, but I didn't and it went kaboom. In the Cobra if I sense wheelhop I just let off till it stops and mash it again. If I were you I would keep the IRS. I am keeping mine and doing a brace. I think the IRS makes these cars. That's just my opinion.

 

[MyStIcHrOmE 04]

People are running 10's on a bone stock IRS? I'd love to know how they are doing that mean while my car makes 460 whp and can't even punch the gas doing 40 mph without wheel hoping and snaping the cv's. Mind you as soon as it wheel hops I always let off the throttle, I'm putting the bushing kit on this weekend Hopfully that helps a little , if not I'm going with a built solid axel

I'm running 10.70-10.80 with a best 60ft of 1.59. The trick is the tires man. I run 16" MT ET Streets (Bias Ply). I just put on the Billet Flow brace... The above numbers were before the install. Everything else in the IRS is BONE STOCK!

 

[svt4me38]

I'm running 10.70-10.80 with a best 60ft of 1.59. The trick is the tires man. I run 16" MT ET Streets (Bias Ply). I just put on the Billet Flow brace... The above numbers were before the install. Everything else in the IRS is BONE STOCK!

How were you launching the car?

 

[MyStIcHrOmE 04]

4500 rpm dumps off the 2-step.... Once my suspension pieces and clutch go in I'm going to bump the launch up some more. 4500 is the max before it just blows the tires off after the 60 ft mark.

 

[svt4me38]

Sweet ... Im hoping to let the hammer rip this season, tired of babying it off the line.

 

[JDUB348]

I think its pretty funny how when ever a solid axle thread pops up you read so many posts about how ex terminator's half shafts are breaking. How many people out of those threads are posting any thing about their solid axles breaking?

Oh shit i said it.. :-D :fm: op:

 

[lowflyn]

IRS is currently out of my car for a SRA swap.

Broke halfshaft by hooking on a 3500 launch.

Put new halfshaft in and went back to track the next week and finished out the season.

Installed WOT box and didn't even attempt the 2-step, just played with the WOT shift feature. Ruined another halfshaft and am fixing another leaking diff cover.

Diff bushings, IRS brace, etc...

It's going in the wife's GT.

 

[JDUB348]

I think its pretty funny how when ever a solid axle thread pops up you read so many posts about how ex terminator's half shafts are breaking. How many people out of those threads are posting any thing about their solid axles breaking?

Oh shit i said it.. :-D :fm: op:

IRS is currently out of my car for a SRA swap.

Broke halfshaft by hooking on a 3500 launch.

Put new halfshaft in and went back to track the next week and finished out the season.

Installed WOT box and didn't even attempt the 2-step, just played with the WOT shift feature. Ruined another halfshaft and am fixing another leaking diff cover.

Diff bushings, IRS brace, etc...

It's going in the wife's GT.

:rolling:

 

[Blackedout]

People are running 10's on a bone stock IRS? I'd love to know how they are doing that mean while my car makes 460 whp and can't even punch the gas doing 40 mph without wheel hoping and snaping the cv's. Mind you as soon as it wheel hops I always let off the throttle, I'm putting the bushing kit on this weekend Hopfully that helps a little , if not I'm going with a built solid axel

Ran a 10.35 with a 1.7? 60' ZERO wheel hop .... What are you running for tires on the street ???

 

[TRBO VNM]

I have no regrets going solid axle. I would like to have an IRS to see what it is like with the FTBR kit. I had one with the MM setup in my first terminator, but I also had MM coilovers setup more for road racing and a 8pt cage. So the car was tight as hell and stuck to the ground. Not the best at the drag strip. So I always broke parts.

Now with what I know, I wouldn't mind trying the IRS out again, but yeah, I don't have the money for it now and love the solid axle.

 

[Mr.Venom]

I'm surprised Bruce hasn't come in yet to defend the IRS. I know when I get mine, I'll be stickin with the IRS for sure.

 

[Ironhand]

No regrets going solid on 2 03 Cobras! Ill do it again in a heartbeat if I ended up with one with an IRS in it.

 

[Bufgt281]

I blew the pumpkin on my 05 CTS-V. The only time there is wheel hop is when the tires are fighting to hook. If your trying to do a burnout and are spinning the tires pretty good, wheel hop shouldn't exist. If your have DR's and nail is then this is where you would see wheel hop. OP my buddy has nitto NT05r's on his car and when he mashes it from a 40 roll it just hooks and goes. So there are a ton of thing factoring in. From what I read your thinking more SRA because you don't want to break the IRS and not because your looking to make it a drag car more or less.

When I blew the rear in the V it was wheel hopping like a mother ****er and I should have let off, but I didn't and it went kaboom. In the Cobra if I sense wheelhop I just let off till it stops and mash it again. If I were you I would keep the IRS. I am keeping mine and doing a brace. I think the IRS makes these cars. That's just my opinion.

I'm definitely in agreement with you,Big Props....

 

[TerminatorSVT03]

I'm thinking my nitto 555r drag radial isn't eloping to much either is it ? But big props to the guys in here making 10 second passes on stock irs ! That's very very impressive I can only dream of flooring my car in 1st and 2nd gear haha wish I could get rid I this wheel hop it's really pissing me off lol

 

[My96z]

I have no regrets going SRA. I still have the bone stock Mach 1 rear suspension and have zero wheel hop. I didn't notice a ride difference in the car after the swap. I too would go SRA again if I ever got another Cobra - it would be the first thing I did to the car.

 

[Bdubbs]

People are running 10's on a bone stock IRS? I'd love to know how they are doing that mean while my car makes 460 whp and can't even punch the gas doing 40 mph without wheel hoping and snaping the cv's. Mind you as soon as it wheel hops I always let off the throttle, I'm putting the bushing kit on this weekend Hopfully that helps a little , if not I'm going with a built solid axel

What is your current suspension setup including tires? I'm making 455/479. I have nitto drag radials on 18 inch wheels, along with H&R race springs, FTBR diff bushings and a LPW diff cover. After this stuff was installed it made a world of difference for my car. Now 1st gear on the street it will spin but very rare do I get wheelhop. The pavement temperature plays a huge factor too.

 

[TerminatorSVT03]

Yea I was kinda thinking that the cold pavent would play a huge factor

 

[Bufgt281]

I'd like to just say this and no more ,when I track my car with 553 to the wheels with all the bushings and DSS stage5'sthe only time it will Hop is in the water then I do my Burn-out and all through my run zero hop so it makes a big difference on the tire and surface conditions.Also on the street when I come out hard out of the hole some times it hops and sometimes it doesn't,and when I use to launch my GT it would hop on and off.So it all depends on the conditions.Though it was alot less it still did,so I think that the guy who posted his axle breaking on the street must've been a defective axle or something.Just an opinion.

 

[SlowSVT]

IRS is currently out of my car for a SRA swap.

Broke halfshaft by hooking on a 3500 launch.

Put new halfshaft in and went back to track the next week and finished out the season.

Installed WOT box and didn't even attempt the 2-step, just played with the WOT shift feature. Ruined another halfshaft and am fixing another leaking diff cover.

Diff bushings, IRS brace, etc...

It's going in the wife's GT.

If you like what drag racing did for your axles, you're gunna love what it does to the driveline and chassis integrity :-D