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#2511381 - 06/21/18 02:16 PM Longest stock 1 piece drive shaft?
mgoblue9798 Offline
enthusiast

Registered: 03/16/10
Posts: 288
Loc: Atlanta, GA
I have a club cab long bed with short tailshaft trans and carrier bearing.
I am converting to 518 and would like to know if anyone has done this and scored a used driveshaft long enough to make this work. Any idea what the longest one piece shaft in the wrecking yards might be?

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#2513609 - 06/26/18 04:27 PM Re: Longest stock 1 piece drive shaft? [Re: mgoblue9798]
70Cuda383 Offline


Registered: 10/07/03
Posts: 21345
Loc: Marysville, O-H-I-O
no clue, but I can tell you that my 2006 Megacab cummins/auto has a one piece shaft that's a mopar factory/dealership piece. It's aluminum, about 5" or 6" in diameter, and VERY long.
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#2513620 - 06/26/18 05:02 PM Re: Longest stock 1 piece drive shaft? [Re: mgoblue9798]
savoy64 Offline
top fuel

Registered: 09/07/11
Posts: 1875
Loc: colorado
vans have long one piece also--later ones are aluminum as well

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#2515827 - 07/01/18 11:10 AM Re: Longest stock 1 piece drive shaft? [Re: mgoblue9798]
moparts Offline


Registered: 01/19/03
Posts: 14107
Loc: Norwich CT USA
Talk to your local Driveshaft shop

I know that the center bearings are needed after a ? length
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2011 Ram 3500 C&C Diesel
2009 Challenger R/T
1983 CJ7 , 5.2 Magnum, 727, Dana 300/44/60
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#2516187 - 07/01/18 10:45 PM Re: Longest stock 1 piece drive shaft? [Re: mgoblue9798]
poorboy Offline
master

Registered: 01/19/03
Posts: 6525
Loc: Freeport IL USA
An 04 quad cab Ram with a Hemi drive shaft is between 71" and 72" u joint center to u joint center. The shaft is laying inside a car and I can't get a good angle to see the exact measurement (darned bifocals). This aluminum shaft is 4" in diameter.

I also have some B Van shafts that are as long and possibly longer, and larger in diameter that I didn't measure. I figured a Hemi Ram aluminum driveshaft that is 71+" long at the joint canters should cover the question. Gene

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#2518085 - 07/05/18 04:38 PM Re: Longest stock 1 piece drive shaft? [Re: poorboy]
mgoblue9798 Offline
enthusiast

Registered: 03/16/10
Posts: 288
Loc: Atlanta, GA
Thank you to everyone for your replies. The two piece shaft that is in it now is a small diameter. Afraid the shafts and carrier bearing would not hold up long with the 440 I plan to use. Since Ma Mopar has a 6 ft or so shaft in the vans and trucks I see no reason I could not use it in my build, provided it is long enough.

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#2519386 - 07/08/18 11:33 PM Re: Longest stock 1 piece drive shaft? [Re: mgoblue9798]
finn Offline
mopar

Registered: 12/10/05
Posts: 575
Loc: UP
Do a google search for “driveshaft critical speed”. There’s a ton of information out there on the subject of driveshafts and their design that you may want to peruse before you fab something up.

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