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Which U-Joint with 12Bolt and stock DS?

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Old 04-05-2009, 04:23 PM
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Default Which U-Joint with 12Bolt and stock DS?

I just ordered a 12 bolt, but I got it used and need to know what u-joint to purchase so I can get this thing in my car this weekend and be able to drive it.

If its needed its a Moser unit, and I know I need to loctite the TA bolts, any other advice for the swap?
Old 04-05-2009, 08:14 PM
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napa part number p447
go to o rileys and order part number 330-10 its the u joint clips that hold it in place
Old 04-05-2009, 09:16 PM
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Originally Posted by ls1perfcar?
napa part number p447
go to o rileys and order part number 330-10 its the u joint clips that hold it in place
You are awesome, but there is no o rileys here (NC) think napa would have them?
Old 04-05-2009, 09:24 PM
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having a problem finding that part number for napa online (I ordered the others from o rileys online) you think the store would have one in stock?
Old 04-06-2009, 12:53 AM
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thats weird it didnt show it for me either on the napa site i know thats the part number tho i just bought one last week from the napa store. anyhow here are the numbers so u know

Neapco/pdq 3-3140
Brute Force 3-3140bf ( autozone)
Rockford K460
Spicer 5-460x
Precision 348 (o rileys)
Napa 447
Old 04-06-2009, 05:13 AM
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Hmm, we use the Napa 447 u joint as well. Bob
Old 04-06-2009, 09:59 AM
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Originally Posted by ls1perfcar?
thats weird it didnt show it for me either on the napa site i know thats the part number tho i just bought one last week from the napa store. anyhow here are the numbers so u know

Neapco/pdq 3-3140
Brute Force 3-3140bf ( autozone)
Rockford K460
Spicer 5-460x
Precision 348 (o rileys)
Napa 447
Are those all for the same u-joint just diff part numbers for the diff stores?
Old 04-06-2009, 11:21 AM
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They hire the dumbest people ever in the parts stores here, So I need a 1310 to 1350 conversion u-joint is that correct, and I will need the 330-10 u-joint bolts listed above to fit the 1350 side to the pinion am I understanding that right? I think I might strangle someone today.
Old 04-06-2009, 02:26 PM
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ya those part numbers are the 1310-1350 u joint and correct u just need the 330-10 to bolt that in the yoke of the rearend. you should be good to go after that. Ya there pretty dumb. just dont cross reference any napa part to autozone or orileys they will give u some goofy ****
Old 05-10-2009, 05:18 PM
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I just went to Napa and got the P447 and it was NOT the correct u-joint, I went back and got the Precision 348 that Napa has and it is NOT the correct one although it does fit the yoke (cap size and length) it does not fit the drive shaft. The stock cap is 1.122 in diameter and the cap on the 348 is 1.188. Any other suggestions!!!!!!!!!

I now have my car in the driveway with no rearend under it. HELP

Last edited by 2camaros6702; 05-10-2009 at 05:36 PM.
Old 05-23-2009, 10:29 AM
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I don't know if this will help but the stock driveshaft is not a 1310, its a saginaw 44 or
3R and your rear yoke is a 1350. A lot of folks here are saying the Napa 0447 is the correct u joint. I am sure the Neapco 2-1153 is the correct u joint although it is a serviceable U joint (grease fitting). From what I can figure out it cross references to a precision 447.
Old 06-02-2009, 04:39 PM
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Ive been wondering this as well. Trying to bolt up my drive shaft to my 9" and it seems the end caps are slightly too long. The driveshaft was JUST bolted up to an exploded 12 bolt. So I figured it already had the 1350.

Is NAPA part # 447 an adaptor or an actual U joint? If so, do I have to bring my driveshaft up and have it installed?
Old 02-13-2020, 06:48 PM
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For future reference the O'Reilly Auto Precision 348 is a 1310 to 1350. This is wrong for an LS driveshaft.

Needs to be a 1330 to 1350 to go from stock DS to a 1350 yoke which is Precision PN 447.



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