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Thread: rear axle question

  1. #1
    2003 Redfire Cobra Conv owner Regular Member Dogman_1969's Avatar
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    rear axle question

    Does all 5 lug ford gt rear ends come factory with 31 splines axles? If not which one does?


    Thanks in advance............

  2. #2
    just a little coupe Regular Member thatdavidkid's Avatar
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    no, mostly truck rear ends and 05+ rear ends for mustangs... also, 03 cobra's irs is 31 spline... if you're looking to do a sra swap, you'll have to swap one that has been built up if you want 31 splines...

  3. #3
    2003 Redfire Cobra Conv owner Regular Member Dogman_1969's Avatar
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    how does the 28 spline 5 lug hold up with drag radials and about 300 rwhp? Here in about november I will be able to do a 5 lug conversion on my 93 lx. I have been thinking about taking a 90 gt rear that I have and take it down to my buddies at Pyle Bros differentials and have them rebuild the posi, install 373's and put all new bearings and seals on some 5 lug axles. Think it's doable for about $850 without the cost of the axles.

  4. #4
    SEEK MEDICAL ATTENTION FOR LIES LASTING MORE THAN 24 HRS.... What is SilverStar you ask?  Click here to find out! 2k4mk1's Avatar
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    300hp will be no problem with 28 splines.

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  5. #5
    just a little coupe Regular Member thatdavidkid's Avatar
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    99% of the time... there's always a chance that a hard launch with a 5sp will break a stock axle... but if you get hardened axles, even 28 spline, you should be fine... but for $850, you should be able to just about build a 31 spline 8.8 for your car... with axles...

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