[93formula]

i got a guy whos bent 2 drive shafts.

the car is a ls1 f body. he is the original owner, road races but doesnt drag race. the car is pretty much stock.

the first drive shaft bent with original suspension. at speeds of about 220-230 km/h. well some serious vibrations were met.

then it was replaced by a shop with a steel drive shaft for temporary use. tested it, ran fine for a bit at speeds of 220 km/h. then a short while later the vibrations came back.

went to the shop again, it was bent.

the only differenced between the two times was the second time he had some suspension mods done like new konis, relocation brackets, eibach pro kit, aluminum lcas.

now what the hell would cause two drive shafts to bend at speeds of over 220km/h???

[CamaroSS]

Hello everyone,

I appreciate the input on my driveshaft issue. We did find the apparent cause of the problem and it was related to a misaligned yoke on the original aluminum shaft. We are assuming the misalignment caused the shaft to become unbalanced from previous high speed excusions.

After the replacement steel shaft bent I sent both shafts to another driveline shop and had them spin the aluminum shaft again to see if it was repairable. They found that it was bent and also found that the yoke was slightly out of alignment. The first shop claimed the shaft was beyond repair and that is why the steel shaft was fabricated. The aluminum shaft has been repaired and will be installed tomorrow and hopefully will solve the problem. We did find out that the steel shaft was not specifically designed to run over 5900 rpm (shaft speed) as they were unaware of the vehicle it was going in. I did not look after ordering or installing the steel shaft but it was 3" OD and I am unsure of the wall thickness.


Thanks again for the responses.