URLACHER54

alright my cousin and i have argued about this for a couple of months now, and i said i think the only advantage is that the aluminum driveshft is lighter and he says that is a performance upgrade. what is the real reason behind it?

PRO50SC

Lighter, therefore less rotating mass.

WhiteWindsor

and therefore more power to the wheels.

mjr46

reduce rotating mass like pro50sc says although I doubt you will feel the diff in the seat of your pants

jthorn9

Well I just put mine in and the gains are vauge at best. There is a nice difference in weight difference between stock and aluminum. My aluminum driveshaft I felt like I could swing the thing like a bat, the stock drive shaft, well, not so much, it had some weight to it. The car revs a little quicker, don't know about power gains though, I'd like to put the car on the dyno again to see if I gained any power with it just to test the theory, but with new tranny freaking out, I probably won't.

Ecstasy

i had one in my 89 lx 5.0. you dont notice the difference. it helps you though.

onesickstang01

yea ive got one, liek jthorne said it just revs a little quicker but you really dont notice it

LOUDexhaust

I believe someone did a dyno run with an aluminum DS and gained 1 hp and 5 ft/lbs. Could've been other factors not accounted for though.

1990boostang

Send it Mythbusters LOL.. I have one on my car and you really dont notice any difference.. It looks better than your old rusty one though.

OnyxCobra

Mythbusters is awesome, they'd probably do it too. I want an aluminum driveshaft more for strength than weight savings, when I took my tranny out i was pretty surprsied how light the stock driveshaft actually was. It is nasty rusty though...