Driveshaft has me worried

[SS/GNX]

http://www.turbobuick.com/forums/ge...25-stock-axles-drive-shafts-when-upgrade.html

Look at this thread... look at Yullose's post! Some nice pictures for you of what will happen to your car if you dont get a new driveshaft! If you can get an aluminum thats rated to 1000HP like YouLikeThat mentioned, I guess I would do that. Same price as chromoly steel, but lighter, less drivetrain loss.
Unless you plan on running near or above 1000Hp of course!

 

[turbofabricator]

Don't forget the highest critical speed/length and diameter limit of any shaft available. Overall, a safer driveshaft that helps put more power to the ground. Man, I should have layed out the bucks for one instead of my 3.5" steel.

Just don't put a knick on a carbon fiber shaft though.

I would NOT suggest a carbon fiber drive shaft for the street though, for this very reason. If you nick it, it becomes useless real fast if you are making big power. They are very strong but give you no warning of failure. One of the engineers I work with was discussing the relevence of carbon fiber in the drive train. He claimed that once you reach the point of failure there is no warning and it turns to DUST/fibers. With a metalic drive shaft you can endure more damage before failure, as in nicks and dents. Dents can be visually detected as can nicks, but on a carbon fiber shaft, many times the damage is not noticable. Granted, the failure of a carbon drive shaft won't come slicing through the floor either, though. Food for thought.

 

[YouLikeThat]

Ok, I'll get the chrome moly drive shaft!

Scott

 

[INTERCOOLED]

I agree with what GNTIM just said with this to add.
In all the years I've been racing Turbo Buicks and had friends race these cars, the stock driveshafts with upgraded u-joints will live on foot braked cars that are running in the mid 10's or 60ftin in the mid to high 1.50s. Even the stock wheel studs will live, eventho it is recommended to change them to larger, and required at NHRA and IHRA legal tracks once you get into the 11.50 range. It's once you start getting your 60fts lower than mid 1.50s or you throw in a trans brake that they tend to do south. When I was running a trans brake on my Turbo 400 in the grey car, I was running a Dennys drive shaft that they warrantied not to break and would replace for free if I ever did. Now, don't know how good that warranty really is cause anything can happen but we did alot of homework before deciding on Dennys.
HTH

Patrick

Do you remember the price range on their driveshafts?