ThisBlood147

I've had the Saleen installed for about 4 days now, and I just yesterday decided to take her out to the deserted straights for a little "test fun". Well, anyways...I've noticed that when I really start to get into her....mainly in 3rd and 5th gear, that there seems to be a fair amount of vibration being generated from beneath the car. My guess would be it's driveshaft vibration....but I could be wrong.

Has anyone else experienced some undercarriage vibration post-s/c installed? I'm worried that maybe the stock driveshaft isn't up to the task. I haven't done any real hard launches from a stop or anything yet.....just some steep 45 to 80 acceleration bursts. Have many of you FI guys gone with aftermarket driveshafts once your hp numbers got over 400? Any input is appreciated.

Meangreen1200

I get a little in 2nd gear with my KB. Nothing bad.

ThisBlood147

Yea, I've talked to a number of guys who've gone forced induction(running hp numbers over 400) that still have the stock driveshaft, and they all seem to be doing fine. But even though I won't be doing much track time (so, no regular hard launches) I still worry about the vibration. I may be wasting some money here, but I think it's worth my peace of mind to go with a stronger aluminum one piece replacement driveshaft. I may never need the extra capacity, but at least I know I won't be picking up pieces of my driveshaft off of the road if I have a little too much fun one day.[:@]
Plus, I'm about to bring her to get dynoed......and I know if there's something suspect about my driveshaft right now that I could end up with a shattered mess once she's on the rollers.

Meangreen1200

Let me know when you get it on. I would like to hear how it goes. I am considering putting one on mine also.