The X v10 auto 4x4 lifted 6. with 45k, high speed vibration. Reporting

I couldn’t find the form that recommended addressing the angle of the driveline and going to a cvc joint to rid the vibration at 65 up, It seems like it was three months or more back, Just mentioned to say Thanks. that’s what I did, I have shimmed up by 1/8ths to ½” and couldn’t get the vib out, so I visited the drive shaft shop to learn they recommend changing the driveline from the fine spline yoke (16 ) to the older style coarse yoke (8). Indeed it moved a bit and seemed logical, so I ordered a driveline with the cvc and 8 spline slip yoke. It lasted 2500 miles or less. My wife tripped to CA for the week and when she returned I drive it to find my surprise, the cvc had blown apart. It had grease, and took most of the vib out but didn’t last, so I returned to the shaft turning 8 spline recommending shop which replaced it with a 3” heavy duty model, custom built as the first in Phx, with, get this, they drilled holes in both sides of he cvc and welded grease fittings to it and ground back the center wall so I can get a gun in to grease the cvc, oem ships them with a dust cover only. Dana, the first shaft they did the same and threaded the fitting in, but you had to remove the shaft to grease it. Thus the solution, weld it in and grind out the cvc, This shop is the shop in Phoenix, everybody uses and has for over 40 years, not the way I would have done it but they are the pro. I wondered if the first had filings that got into the needle bearing resulting in the failure.

So now I have aligned the angle as close as this gage will get it, which is factory with no shims. Now back to the drive line, while it was out, I took it for a drive using the front wheels and if felt like glass, so I assume it’s the shaft, I will follow up in 3k to finish this and let you know if it lasted.
Do you have any suggestions? Or experience with this kind of modification?

Windmill

 

The new CVC went out again, 100 miles, I took it back and we found they drilled through the race, which we replaced and I installed the new shaft, which was balanced again. It still vibrates a little, I just cant figure it out, see ya in 3k

 

I have had GREAT service and parts from high angle driveline. I had a Tom Woods shaft in my Bronco, the CV blew out 4 times in 1 year!!!!! I called high angle driveline, and they sent me their shaft. It's been about 18 months and it's still perfect! I have not changed the pinion angles from each shaft. Nothing changed exept who I got them from. I think this is their phone number (530) 877-2875 They do alot of lifted trucks and can tell you what you need. I am positive he can help you fix the problem. I thought I was doomed. My truck was tall, but I could never keep a reliable shaft. Tom Wood also charged me every time he fixed it! He said I was too hard on the truck. Yeah right! I baby the Bronco, his shaft just sucks! So I have a Tom Woods shaft in the garage with over 1000 dollars invested, and it's useless. Give High angle a call, they do good stuff.