The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Balancing a two-piece driveshaft

**Accelo** · 04-14-2021, 07:15 PM

I just dissembled a two piece drive shaft from a 1970. It could only be indexed one way at the slip yolk.
There is actually two reasons that the drive-line need to be indexed.
1) The balance.
2) The U-joint phasing.

Of the two, phasing is the most important.

https://www.youtube.com/watch?v=dt69zYAcXME

04-14-2021, 07:15 PM	#4
Accelo Senior Member Join Date: Mar 2015 Location: washington Posts: 2,194	Re: Balancing a two-piece driveshaft I just dissembled a two piece drive shaft from a 1970. It could only be indexed one way at the slip yolk. There is actually two reasons that the drive-line need to be indexed. 1) The balance. 2) The U-joint phasing. Of the two, phasing is the most important. https://www.youtube.com/watch?v=dt69zYAcXME