Drive Shaft opinions & thoughts

[70GMCer]

Over this Winter, I hope to install my 700R4 into my lwb. I had planned on cutting and balancing a spare original 2 piece shaft for the swap. Seeing that the 700r4 is 2 3/8" longer than a 350 short shaft, I was going to cut 3" off the 2 piece shaft that I have read is recommended.

Since I've have been getting all the measurements together, I found in my garage, (hiding) a 1 piece drive shaft that came out of a 84 burb. I put the 2 shafts side by side, (see pic) to see how short the burb was to the uncut original from our trucks.

It looked close enough to work I thought. So, I took measurements too see. This is what I came up with.

I measured the full length of both shafts, including the yokes.

2 piece 77 1/2"
burb 73 3/4"
difference 3 3/4"

The burb is 3/4" shorter than I need to cut off the original. Look at the size of the one piece shaft. I would sure like to use that.

Would 3/4" short be to much to chance using this shaft. There would still be enough of the slip yoke into the 700r4. I know in the past, I have said I agree using the 2 piece in our lwb trucks. But, this big one would be great in my opinion.

Anyone????