[Chief of the 60's]

Originally Posted by JLMounce

A lot depends on the operation you're going to put the shaft under. Build construction, diameter, length all play a factor in what a driveshaft will be able to withstand. Remember, you're not just worried about what the driveshaft will withstand from say a drag launch, but what it'll cope with at speed.

Here's your GM truck shaft exploding on the dyno. https://www.youtube.com/watch?v=M8Kjuk6KXMA

If you're doing this to put in your cruiser that doesn't see high speeds at the end of a drag strip, it might be a way to get something in there a bit cheaper.

On a performance build that might be raced, I wouldn't touch it.

Here's just one of many lawsuits regarding aluminum GM driveshafts on vehicles far from anything but a cruiser > https://gmauthority.com/blog/2019/12...on-driveshaft/

There is nothing wrong with an aluminum driveshaft built by a competent source.