IRS into a '94 GT
 

Just thought I would drop in and mention that I swapped an IRS into my '94 GT this past weekend. The swap was MUCH easier than I anticipated. The only real issue thus far has been running down a soft line to complete my rear brake lines. Other than that, it was relatively simple. I have yet to drive the car due to some wonderful clutch engagement/disengagement issues, but hopefully tonight all of that will be fixed. What I am the most excited about is the ability to play with my rear toe-in and negative camber!

I purchased koni SA's with 10" 600'lb coilover springs for the rear, urethane control arm and subframe arm bushings, aluminum diff bushings, and a rear bump steer kit is in the immediate future. Can anybody think of anything else I am missing on the rear?

Matt

Re: IRS into a '94 GT
 

I'm a big fan of Maximum Motorsports. Looks like they make some new parts for the IRS:
http://www.maximummotorsports.com/irs-asp.asp

Re: IRS into a '94 GT
 

My car is equipped with all sorts of maximum parts. That is actually where I ordered the bushings from.

Matt

Re: IRS into a '94 GT
 

Yes MM does make suspension parts for the IRS. The IRS is good for cornering. I am also a big fan of MM parts.


Matt :)

Re: IRS into a '94 GT
 

what car did you get the irs out of

Re: IRS into a '94 GT
 

Just out of curiousity, what model are the SA's that you got? Sports, 30 series, etc......? Also what was in the decision to get 600lb springs in the rear? I have the Griggs kit all the way around on my car (which i dislike btw) but it has 475lb springs in the rear its way to soft. Many people have been telling me that 475 was way to stiff..... as i was contemplating doing a 550 in the rear and a 500 in the front. Your thoughts?

Re: IRS into a '94 GT
 

It came out of an '03 Cobra. The guy was looking for a solid axle for the drag strip and I just happened to have one containing what he was looking for.

If I remember correctly the SA's were 30 series, but I could be wrong. It was years ago and I purchased them used.

As for why I chose 600 lb springs for the rear? Mainly because it was available at a great price and I've heard of people running higher spring rates on the IRS. I matched this with 450 lb front coilover springs. I ran this setup at Sebring at about 50% effort (head gasket failure) and was surprised at how well the combination matched.


P.S. - Sorry for the incredibly delayed response. I had a slight leave of absence.