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Discussion Starter · #1 · (Edited)
is there suppoused to be a u-joint in the middle of the driveshaft?
also, what is this
IMG_3920.JPG
also, there is a bolt missing where the trans bolts up to the engine close to the starter.
IMG_3916.JPG
is that okay?
 

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you have a 2 piece driveshaft
 

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i thought regular cab was a one piece
drive shaft mine is
 

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QC Long Bed may have the center bearing and needs the support or risk the shaft vibrating because of length. Also a long shaft without the bearing is prone to damage from high centering the truck because the angle isn't as steep.
Is that "Missing bolt" one of the alignment dowles between the engine and trans? I can't tell from the pic.
 

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I doesn't look like an alignment dowel it is threaded....but just a guess.
 

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take a long enough bolt thread er in there to see how long it is throw one the right size in good to go! No worries
 

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As for a two piece drive shaft meaning a u-joint in the middle is very common to aquire angles from the transmission to the diff; also reduces torsional twisting in a long one piece drive shaft
 

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You have a ripped dust seal though......

2 pc steel shafts are used because the lenght of the shaft will cause it to bend and start to jump rope... this is why alum shafts can be 1 pc and long, there lighter weight doesn't give them the jump rope issue...

The 2pc is not used for angles, you can't just stick a 2 pc in a truck and run different angles because you want to have clearance...oh you can, but it won't be enjoyable anywhere else other then off-road, and on road it won't be cheap without a cv, or possibly 2 cv's.
 

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Two piece driveshaft would have a "Carrier Bearing" somewhere in the middle. This helps with the angle of the shaft over the longer distance.

As far as that bolt missing, it looks pretty clean there, almost like it hasn't been there at all. No seepage from the case, I wouldn't worry too much. If it makes you feel better, find a bolt from the top of the case that keeps the case together, try it in your missing hole and if the size and pitch lines up, search for one around or head off to a hardware store and match it up.
 

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The 2pc is not used for angles, you can't just stick a 2 pc in a truck and run different angles because you want to have clearance...oh you can, but it won't be enjoyable anywhere else other then off-road, and on road it won't be cheap without a cv, or possibly 2 cv's.
Ya you can as long as your u-joint angles cancel out within one degree every angle taken from tranny angle all the way back to the tilt of your rear diff. plus all calculations inbetween

Pirate4x4.Com - Extreme Four Wheel Drive

trust me i learned it in my first level on diesel mechanics
 

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I build shafts for everything that has a need to transfer power to a drive gear that it can't be bolted directly to, even the serious off road long wheel base trucks that don't want there shaft hitting things while climbing over things and there frame rails and skid plates are encountering the ground or rocks...

So like i said when you use a 2 pc to keep the main shaft tucked in and the 2nd pc to run to the rear, it needs cv's if you want to use it on the street at real rpms, i don't care what you do with a 2pc common 3 jointed shaft it will not work anywhere else other then off-road at the extremes in this case.

The original reason to run multiple shafts is because of length, not angles.
The 2nd reason for a 2pc is fairly new and not by it's original design for it's use

Trust me...i have fixed many big companies 2, 3 and 4 pc driveshaft problems, and they pay me.
 
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