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You didn't happen to take the drive shaft out of phase when you put it in did you? Very commonly made mistake.
I think you're on track with looking into your pinion angle. In my experience these trucks are pretty sensitive to pinion angle change and just a degree or two out can cause issues. Installing a longer transmission has most likely thrown off your angles. Another thing to consider is the need for a CV joint. I have found the need for a CV rear shaft on every lifted Toyota I've ever worked on. "god awful vibration/ gear grinding noise that sounds like it's coming from the trans/ T case" This is the typical complaint that leads to the CV shaft. With a CV I always set the pinion 2* under the slope of the shaft. I am a lot less familiar with standard single u joint shafts but what you are saying sounds right. you want the flanges parallel.http://www.4crawler.com/4x4/CheapTricks/Driveline-101.shtmlGood luck, hopefully the transmission is not the issue
And also when your dealing with the CV joint, don't the angles have to be perscise?
The pinion angle needs to be set correctly either way, CV or non CV. If you are going with chevy 63's it's pretty standard to need a CV shaft. I've put 63's on a handful of trucks. I have always used a CV and never needed to tip the pinion up more than 7*( maybe 9* one time?) to get the required pinion angle of 2* under the slope of the shaft. 14* would be a big shim and probably time to rotate the perches.
Rotate the perches? And also I'm sure you read what I posted before but right now with shims my pinion angle is 76* tilted up and the the t case is at 90* What would you suggest I do to make it parallel?If I remember correctly my shaft angle is 12*
Rotate perches = cut off your spring perches and weld on new ones so you pinion is at the correct angle without shims.So I have never really had to mess with a non cv setup. The only time I tried was the first time I installed dual cases and 63's on a yota. I was unseccessful and went to a CV.The way I understand it and I could be completely wrong, is that with your non CV shaft you would rotate your pinion down 14*, then both your pinion and tcase flange would be at 90* "parallel". I don't know, does that sound right?
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