Steel vs Aluminum driveshaft

[FED 387]

maybe no performance advantage but ya are taking WEIGHT outa the car--Comp 387

[Ed Carpenter]

Originally Posted by FED 387

maybe no performance advantage but ya are taking WEIGHT outa the car--Comp 387

My car is 65lbs heavy for H. Maybe more if I get some HP off. LOL

[Jim Caughlin]

In case anyone is wondering about weights, my 3" steel driveshaft weighs 13#, the duplicate 3" alum with the same size yoke and ujoints weighs 10#. I didn't do back to back runs so don't have any data on performance differences.

Jim Caughlin
SS 6019

[FED 387]

OK guys not sure what if any performance advantage if there is one but the BIG 3 have been installing aluminum driveshafts in rear wheel drive vehicles from Camaros to Lincolns to full size pick ups/vans etc for about 20 years---there must be a reason they are doing it--anybody wanna guess why a multi billion dollar company would do it?? It aint the color of silver vs. black or rust so why do ya think they are doing it????? comp 387

[Chad Rhodes]

Originally Posted by FED 387

OK guys not sure what if any performance advantage if there is one but the BIG 3 have been installing aluminum driveshafts in rear wheel drive vehicles from Camaros to Lincolns to full size pick ups/vans etc for about 20 years---there must be a reason they are doing it--anybody wanna guess why a multi billion dollar company would do it?? It aint the color of silver vs. black or rust so why do ya think they are doing it????? comp 387

harmonic vibration

[Tom keedle]

Originally Posted by Chad Rhodes

harmonic vibration

yep, that's what they tell me,too.mostly OD trans' have that problem for some reason.

[Jeff Lee]

I had a buddy with a Cummings diesel Ram truck that had a serious vibration problem. Many trips to the dealer and it was a serious problem when towing his race car. The factory finally put a carbon fiber drive shaft in it and curred the problem. I'm sure there is a TSM on it and it can be applied to any mopar car in Stock.