jag irs
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Thread: jag irs

  1. #1
    vintage speed shop
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    jag irs

    does anyone know what kind of power the jag irs will take? and which one is the best?

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    Official RnS Addict beach57's Avatar
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    Re: jag irs

    IRS or straight ?

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    I'm Not Jed Clampett stueeee's Avatar
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    Re: jag irs

    Whether it's strong enough Depends on the weight of your car really and how sticky/ large your tyres are; not just the power, or more correctly the torque, which is what breaks rear ends.

    Overall, the Jag IRS is quite chunky internally. it has an 8 1/2 " crownwheel, bigger engine models often had a PowerLock LSD fitted too. Choosing a rear end with a final drive ratio that matches your ride's rev range and tyre size for gearing is the most important thing though.
    Last edited by stueeee; 09-05-2010 at 22:17. Reason: typo
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    Re: jag irs

    The real problem is if you break a UJ as the driveshaft supports the hub and is effectively the top arm
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    Re: jag irs

    well im looking to put it in my 53 chevy stepside on airbags running a blowen 350 small block

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    Re: jag irs

    Quote Originally Posted by dubstuff View Post
    well im looking to put it in my 53 chevy stepside on airbags running a blowen 350 small block
    So loads of torque and not particularly light weight. If big sticky tyres are going to be part of that package too, I'd think about using a Ford 9" rather than a Jag Salisbury IRS, just for the confidence that something in the final drive wouldn't break if you leadfooted the accelerator and the rear end suddenly hooked up.

    A later 9" rear would be the best type to go for as they had 31 spline halfshafts and bigger wheel bearings too.
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