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Old 04-17-2018, 09:57 AM   #1
SunSoaked
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Join Date: Dec 2011
Location: Yuma Arizona
Posts: 775
Shaft angle after 2pc shaft conversion

Swapped a 4500/205 combo for a th400/208 in 85 k20. Ended up being 11+ inches shorter overall making for a 65" driveshaft. Paying $600 for an aluminum shaft wasn't going to happen. Saturday I pulled a factory 2 pc driveline, x-member and carrier bearing/support out of a 89 burb. This way I only have to shorten one of the shafts, add new joints and good too go. My plan is to install the rear shaft and bolt in the x member where it lands and then shorten the front shaft as required. The only thing I'm wondering about is the pinion angles on the rear shaft? Am I going to have to shim the diff to adjust pinion angle? My truck sits several inches higher than the burb. How did the factory crew cabs w/2 pc shafts account for it, if at all?
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Old 04-17-2018, 10:50 AM   #2
nonstop
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Location: Northern California
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Re: Shaft angle after 2pc shaft conversion

Many of the factory 2 piece shafts mounted differently. The carrier bearing mounts 180 degrees from yours and uses a bracket mounted to An existing crossmember. You can still use your set up and just space your crossmember down. That should help you with your angles.
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Old 04-17-2018, 11:05 AM   #3
SunSoaked
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Location: Yuma Arizona
Posts: 775
Re: Shaft angle after 2pc shaft conversion

Is the goal to minimize the angles or keep them the same angle? I like the idea of having the carrier bearing on top of the x member for off-road protection. Alternatively, I could use the stock shaft (with a slip yoke) and end up with a very short front shaft, but it would be parallel with the output shaft.
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