Pinion Angle Help

[blazer74]

He needs to know these things tho.


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[Motorhead337]

Alright everyone, after much hard work I removed the wedge and have just the block installed. I had to make new centering pins out of grade 8 3/8 bolts. Now the pinion is sitting the right way to the driveshaft but just barely. Its almost straight on. I feel like I need blocks with no taper at all. And yes the short side of the springs went forward.  I don't feel any vibration till about 60 but my tires are bald and one is missing  a chunk (I know I know). Using the tremec angle finder app on unlevel driveway it says the difference between the two ujoints is 1.6°. Soo I will post pics tomorrow my back is hurting like heck and its late. Any more questions or concerns? Thanks everyone. I know I'm difficult and its because I moved away from my dads shop and have very limited tools in an uneven driveway.

[Motorhead337]

Also (I will take pic with tape measure) how much "stick out" on the yoke should there be?

[blazer74]

Look at the old marks on the yoke and see how much was sticking out before.
You should be able to see the old wear marks and see how much in and out travel you had before, measure how much spline engagement you have left now in the slip yoke and  see if you have enough travel on the splines using your original movement.
From what I learned about 2 inches minimum spline engagement.


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[Irish_Alley]

yeah i dont know why but with the short side forward the shaft was too long. not the same thing in your case, but i had to rotate mine to get the shaft the right length. i replaced a lift that was in mine with another lift. ideally if you lift the frame up and left the suspension hang if the shaft doesnt fall out you can see how much is still left in the tail housing. also most shocks will bottom out before the springs

[Motorhead337]

The shocks do bottom out wayyy before the springs and even with the shocks off and the rear end sitting about 4 inches below the uncompressed spring the driveshaft didn't fall out. I'd say its out about an inch or so more than were it was. I'll get some pics.

[Motorhead337]

Okay neither the tcase or pinion have much of an operating angle however I would say they are equal and opposite. Here's some pics what do you think about my yoke? Should I get the driveshaft lengthend ?

[blazer74]

Unless you plan on hard wheeling or heavy towing it doesn't vibrate should be fine being a long wheel base. But of course longer would be better.


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[Captkaos]

How much of that yoke is left going into the trans?  It is hard to tell from the pictures but the trans yoke and the axle yoke should be close to the same angle (within about 2-3 degrees) if that is the case you should be ok.

[Motorhead337]

They are within 3°
Idk how much is left in the trans but I will see soon when I replace the ujoints and output seal.
I called rough country and told them they either need to include removing the wedge in their instructions or sell the kit with 0 tapered blocks. He said he'd pass it along.. Psh.

[ehjorten]

Just to add to this discussion...

I noticed there was talk of a transfer-case drop.  I am not sure if you did that or not, but that is a fix that I don't like to do.  All it does is angle the engine, transmission and transfer-case more to help decrease the working angle on the rear U-Joints.  The problem is that it increases the working angle on the front driveshaft for a 4wd vehicle.  On a long-wheelbase truck you shouldn't need to worry about this transfer-case drop at all!  I have an 8" lift in my '91 with no transfer-case drop!  The only thing that you have to do in my case is grind-down the limit stops on the front CV-Joint to allow it to spin freely.

[Motorhead337]

I did do the tcase drop but I'm thinking it would be better to remove it and get a slightly longer driveshaft.I dont even have the front shaft in because of the factory y-pipe is in the way.

[Motorhead337]

I want my 4wd. Is there a dual exhaust kit I could buy with minimal cutting? How much should I grind off this shaft?

[Irish_Alley]

http://www.pirate4x4.com/tech/billavista/PR-shaft/index2.html
found this while going through my book marks

[Motorhead337]

Wow! That is informative. Any direction to look for dual exhaust system and 4.11 or 4.56 gears?