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Back on the road again (with a problem)

Did you run it without the rear shaft?? Be sure to put a bottle or something over the output so you won't lose your fluid.

Try pulling the shaft and rotating it 180 deg and slipping the yoke back in the output.
 
I did not try driving it with the rear shaft out yet but, how does my drive angle look?

IMAG0182.jpg
 
Perfect. If mine looked that good I would be proud. Maybe your transfer case has some problems after all. Did you try another conversion u-joint just in case?
 
No I haven't tried a different joint. I pulled the shaft out and the conversion joint seemed a little stiff. I greased it againg and reinstalled it. I just hope that it isn't something in the rear diff. When I picked up the rear diff the axles were not installed.
 
Why weren't the axles installed? Obviuosly someone has been messing around in there for some reason. Maybe the ring and pinion has been changed and whoever changed them didn't do something right (set the backlash, do the crush sleeve on the pinion bearing, etc.) Either way, I wouldn't drive it until I figured out what's up because that could kill the transfer case for good. You may have to have the rear axle rebuilt or get another one and sell the one that's in their now for parts if something's wrong with it. Otherwise you could sell it as is and get some money back. I see you haven't done the e-brake yet anyway.
 
He had it apart to do the disc brake conversion. He had the brackets bolted on but put rockwells on his burban instead of these before he got all of the parts. I wasn't too interested in spending the money on the caddy calipers. With my luck my rear diff is hosed..
 
Oh well. Now you get to rebuild it and put a Detroit in it like you always wanted. More work. Yay!!! :woot:
 
EIB8400 said:
I did not try driving it with the rear shaft out yet but, how does my drive angle look?
Click to expand...


With a stock slip yoke this is not the correct angle for your pinion. Your tcase ujoint and your axle ujoint should be close to the same angle. right now you have your axle joint set at zero, which is correct for a CV shaft.
 
So I should angle my axle up more? DIY4X axle shims? What degree? I don't realy want to cut the perches back off and reweld them.
 
Your angle looks the same as mine on my 14bff and I have zero vibrations, and do not have a cv joint.
couple thoughts.

Please show a pic of your rear driveshaft going into the t-case ?

Do you have enough slip going into the t-case ? if not the driveshaft will bind at the t-case.

If your driveshaft angle at the t-case is bad, it will give you vibes.

If the ujoint at the t-case was going bad before the lift, putting it at more of an angle will make it worse and cause vibes.

And of course if you pinion is messed up on the 14bff for some reason, it will send the vibes up thru the shaft.
 
There is about 4 inches or more of shaft going into the case:D. The joint at the case doesn't having any play in it.

blazer 001.jpg

blazer 003.jpg
 
If you have yet to lower the t-case, I would drop it atleast 1", that will put a little slip back into the case plus give you a betta angle . that would be a quick check. Also check the condition of that ujoint going into the t-case.
 
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The joint at the case seems good. No slop in it. Will dropping the case put a strain on the tranmission case and cause problems later?
 
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EIB8400 said:
The joint at the case seems good. No slop in it. Will dropping the case put a strain on the tranmission case and cause problems later?
Click to expand...

Lots of guys have had to lower their transfer case 1" to get the proper driveshaft angle. I don't think it's a bad idea. Unless you have a fan that's really close to hitting the fan shroud or radiator or some other clearance issue already. The angle of your shaft going into the transfer case does look pretty severe. You could try some shims or do a slip yoke eliminator kit and get a CV shaft made, but I think some 1" spacers for the transfer case would be the easiest and cheapest fix.
 
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Well I guess I am going to drop the case down and go from there. Thanks for the help everyone.
 
Well you guys where right and I'm lucky. I dropped the case an inch and no more vibes and bad noises:woot:. I'm so glad it wasn't the rear diff. Thanks for the help:waytogo:.
 
It's always a good feeling when you can diagnose and fix a problem like that, especially when it's something that's been bugging you.
 
EIB8400 said:
Now all I need is some 35s and a bigger motor..
Click to expand...

Uh oh. That's the kind of thinking that got most of us in trouble to start with. Once you start with that stuff, there's no looking back. Until you run out of money anyway.
 
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