Quote:
Originally Posted by Cwright99
Looking for information on changing the ring and pinion on a Jag IRS. My current Cobra set up is a 429 SCJ (550 HP), CR Toploader and a 3.54 gear ratio in a 61-63 XKE Jag IRS.
Trying to get a sense of how difficult it is to change out the ring and pinion to 3.08 or something along those lines. Is this relatively straight forward like changing the gears out of a standard non IRS rear end. Or is it far more complicated and should be left to a professional.
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If you are going to change to a 3.08, then you'll need to change your tranny from a CR to a WR to make those rear gears work, otherwise, to simulate what it'll be like, try to always start your cobra from a stop in 2nd gear. That'll give you an idea.
If you change gears, you may just want to buy another completed center section, and change it out, selling your old one, or keeping it as a spare.
If you're not going to change your tranny, I'd leave it alone.