Well I found out they are stronger than a 3 1/2" .086 steel driveshaft. When I took my truck to the track last year, I launched it one time at 10 pounds of boost and left with all 4 spinning. Ever since I have had a leak at the transfer case output seal. I replaced the seal, and the leak didn't stop. On my last trip I noticed a vibration in the floorboard, so when I got home I put it up on jack stands and spun the shaft. To my surprise it was out of round about 3/16" about 1/3rd of the way up from the diff. Took tthe shaft down to the driveshaft shop, and I had twisted the shaft and "bent it good" as he put it. So now I have a 4 1/2" .115 wall aluminum shaft in it's place. Hopefully this one holds up better.
I would have thought the u-joints would have let go long before I twisted the shaft, but I got the shaft instead. I know at 53 3/16" center to center critical speed wasn't an issue. Maybe I ought to lay off the burnouts with the family truckster?
I would have thought the u-joints would have let go long before I twisted the shaft, but I got the shaft instead. I know at 53 3/16" center to center critical speed wasn't an issue. Maybe I ought to lay off the burnouts with the family truckster?