10 bolt 7.5 to ford nine inch - Hot Rod Forum : Hotrodders Bulletin Board
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Old 10-23-2003, 04:49 PM
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10 bolt 7.5 to ford nine inch

Hi everyone,
I just got my new ford nine inch from currie enterprises to replace my weak 10 bolt 7.5 inch rear thats in my 83 Regal. I'm sure this swap has been done a thousand times so I was just wondering if anyone knows exactly how much longer the ford is than the GM rear so I know how much to shorten my driveshaft Thanks for any replies.

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Old 10-23-2003, 08:33 PM
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Arrow

There are several different length yokes for the 9", so depending which one you have it will vary. There is a good possibility that all you will have to do is change the rear u-joint (maybe not even that with the right yoke) to one with 2 different cross dimensions ( a conversion joint).
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Old 10-23-2003, 09:53 PM
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that would be great .I've almost got the new rear in and I was hoping to be able to get it on the road for a little bit before the snow flies. I'm going from a 2.56 one wheel wonder to 3.70 posi. I've got 430 HP and I'm really excited to see how much difference a quality rear-end with good gears will make.
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Old 10-28-2003, 06:21 AM
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just got it together and found out that the drive shaft is still the correct length..... YES!!! I found a local shop that will rebalance and put on a conversion U-joint for 100 dollars. one other question, how much horsepower is the stock driveshaft good for if I slap on slicks and go to the drags?
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Old 10-28-2003, 07:34 PM
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it all depends on how long it is and what its made of..the longer it is the easyer it will snap
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