Quote: cobra as in mustang ? how much does that assembly weigh ? is it a weld/bolt in sorta deal ? how big are the axle shafts and bearings ? will the rear wheels need a strange backspace offset to fit decent size tires in the f body ? ring gear size ? sorry for all the questions. just curious
1. Yes, that is from a 2003 Mustang Cobra. 2. I don't know how much it weighs, but, it took myself and the gent that sold it to me to muscle it up into his truck. I'm sure that info is on the web somewhere. 3. Don't have a reading on the axle shaft size and bearings. That's probably out there as well.
I CAN tell you that the 2003-2004 version of this IRS are the best ones. They have the 31 spline shafts. The earlier versions had 28 splines.
4. No, no special backspacing looks like it will be needed in my F-body. I currently have a 69 B-body 8 3/4 housing in my Volare. The Cobra IRS is less than 1/2" wider.
5. The IRS uses the standard Ford 8.8" ring gear but with an aluminum housing.
