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#1 |
Senior Member
![]() Join Date: Mar 2001
Location: Cedar Park, TX
Posts: 686
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Torque spec - Driveshaft needed
Hey guys,
Can some one tell me what the proper torque spec is for the endcap to U-Joint where the driveshaft connects to the differential. If it makes a differerence, its a stock 12-bolt. Thanks!!!
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71 Chevy C-10 SWB Fleetside RamJet-350/4L60e & Compushift/3.73Posi See it at www.prismnet.com/~grzanich |
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#2 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Bubba, as silly as it sounds, get them as tight as you possibly can with the box end of the wrench. IIRC it is a 5/16 head, so you aren't going to get 150 ft pounds on it.
I always use a threadlocking compound, and if they look too old or any damage at all...replace them with new. As far as real torque figures, I really couldn't tel you, but I'm sure some one can though. (asuming you can get a torque wrench in there) |
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#3 |
Senior Member
![]() Join Date: Mar 2001
Location: Cedar Park, TX
Posts: 686
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Well that is what I was thinking...get them as tight as possible, but then reading about U-Joints, the mfg are suggesting them to be torqued properly to prevent distorting the cups, causing premature failure. Thats why I would like to "correct" torque spec...ie, 20ft-lbs or 120ft-lbs
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71 Chevy C-10 SWB Fleetside RamJet-350/4L60e & Compushift/3.73Posi See it at www.prismnet.com/~grzanich |
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#4 |
Registered User
Join Date: Jun 2003
Posts: 104
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i once read 17 ft./lbs. but i always do it exactly like longhorn said
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#5 |
~Rest In Peace~
Join Date: May 2005
Location: CALIFORNIA NOR CAL
Posts: 9,707
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torque them done until you FART
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is it fast ? it has a lighting bolt donut? B___H please, I can remove 90% of your so called "beauty" with a kleenex |
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#6 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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bubba, that is interesting, and it does make sence.
However, i still say torque them untill the wrench is about to round off the bolt. if you do find proper specs, please let us know. |
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#7 |
Account Suspended
Join Date: Mar 2001
Location: Virginia Beach, Va. U.S.A.
Posts: 15,320
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I always tighten the crap out of them, been doing it for over 20 years.
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#8 |
68cst_ss490
Join Date: May 2001
Location: edmonton,canada
Posts: 1,363
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this is the spec for a 98 gmc 1500...id imagine the 67-72 trucks isnt much different
Rear Axle Yoke Retainer Bolt C/K 1,2,3 Except C3500HD 20 N·m 15 lb ft
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Dean edmonton,canada a winter wonderland 2005 Chevrolet Avalanche LT cold air intake, performance exhaust, Comp cams cam, jba shorty ceramic headers. http://www.cardomain.com/ride/3090973 |
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#9 |
Registered User
Join Date: Oct 2004
Location: saskatoon, planet earth
Posts: 691
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I read somewhere once that when engeneers design things with torque requirments the size of the fastener head is a pretty good clue as to how tight it needs to be. Small wrenches fit small bolts, small wrenches have shorter handles than larger wrenches, the length of the handle determins how much leverage or torque you can apply. So, if you use a wrench and not a socket and tighten it till you fart you'll likely be pretty close wether it be a 3/8 or 1 1/2 bolt. Sort of a built in torque limiter. There are some situations where exact torque is critical and this just sin't good enough, but it's a good guide.. Then again if you live on pickled eggs, beans & cabbage and beer you might fart just bending over.
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I got a bench seat baby, you don't have to sit over there. |
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