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01-16-2018, 01:51 PM | #1 |
Registered User
Join Date: Aug 2013
Location: San Jose Ca
Posts: 965
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Drive Shaft Length Problem
I'm getting close to having a new drive shaft made for my 71 4X4 crew cab I'm building and I'm running into issue with length and slip yoke. I have Advanced Adapters transfer case with flange 1350 U joint and 14 bolt rear end with 1350 U joint. The slip yoke will have to be in the drive shaft. I talked to Paul at Rossi's and he said he does not know where to get slip yoke to build a drive shaft 78" long out of aluminum. I would have to install 2 piece shaft. What are you guys doing for long drive shaft.
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01-16-2018, 03:59 PM | #2 |
Fabricate till you "puke"
Join Date: Jun 2002
Location: Ill
Posts: 9,403
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Re: Drive Shaft Length Problem
Paul is "right on", you will need a 2 pc shaft for that lenght if you look at critical speed vs lenght....you will find that around 68-70" is about max for a 1 pcs shaft. They will tend to "jump rope" (whip) @ speed. Longhorn
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01-16-2018, 04:32 PM | #3 |
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Join Date: Jul 2007
Location: Centrally located between Houston, Austin and Waco. BCS area.
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Re: Drive Shaft Length Problem
I've heard that some 2008 and above Chevy trucks with crew cabs have a very long single piece driveshaft -around 80 plus inches. They are aluminum and pretty thick. Something like 4 inch inside diameter.
Check some salvage yards and if you find one have it shortened and balanced.
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01-16-2018, 10:18 PM | #4 | |
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Location: San Jose Ca
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Re: Drive Shaft Length Problem
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01-16-2018, 11:55 PM | #5 |
60-66 Nut
Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,246
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Re: Drive Shaft Length Problem
You're just going to have to mount a carrier bearing and go with a 2pc shaft.
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01-17-2018, 04:01 PM | #6 |
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Re: Drive Shaft Length Problem
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