As most of you guys may know Ford didn't use retaining clips on the driveshafts of the 05 V6, therefor I believe its 110mph+ theres a chance the screws can back out and yea the driveshaft will drop/grenade. My question is for you 05 V6 owners that have had their car dynoed, from what I understand Dyno pulls/tuning are mainly done in 4th gear which easily exceeds 110mph. What have you guys done about this so your driveshaft doesn't come loose while on the dyno and this is for you guys with the stock driveshaft not aluminum...


https://mustangforums.com/forum/4-0l...iveshafts.html

Thanks! And I'm posting in the general discussion since it will get more views then the V6 section...

 

Come on... I know there is some of you guys out there with 05 V6's that have been dynoed.

 

That doesn't make sense to me, if the bolts are properly torqued I don't see why or how they can back out. I think you may have heard somebody speculating, doing some "internet engineering".

 

I think he's talking about the stock 2 piece driveshaft that likes to grenade after a certain mph...

 

Wow this is the first time I have heard of this.
That SUCKS.

The only thing I could see as a fix would be ditch the stock and get a
aftermarket. Damn that is some money you would have to spend but on the other hand you could view it as an investment.
I heard the aluminum driveshafts are an EXELLENT mod.
People rave about them all the time.

 

I hadn't Heard about it either until afixer but then again he's the only one ive heard of. They may be different 06+ maybe he just had bad luck.

I am going to be getting an aluminum, the stock driveshaft makes me uneasy.

 

The problem is that on the 05 model V6 the bearing caps for the U joint are staked in. The speed limiter is set for 113 I believe. The problem did show itself on the dyno with an X charger being tuned. The bearing caps came apart and the shaft followed suit in short order. The 06 and later shafts have c clips to secure the bearing caps, no failures of this configuration have been reported. So you see it's not the bolts causing the problem. I have since replaced my05 shaft with an aluminum shaft, not because of the bearing caps but because of vibration. The new shaft is vibration free and I don't have to worry about my x charger causing the shaft to fail under stress. But to answer your question if you inspect the shaft prior to a dyno pull and the caps are still in their original location I doubt you will have a problem. My car has numerous pulls on it with the stock shaft, I didn't have a problem.

 

That just reassured me, is it the caps to the tranny or the diff? Or both?

 

All eight bearing caps on the drive shaft are staked in. I believe the shaft that failed, failed at the rear end flange, but I could be mistaken on that. The staked caps are definitely not intended for anything more than grocery getting. So if you are pumping up the volume , so to speak, you need a high performance aluminum shaft. The aluminum shaft does make a noticeable difference in the car, they are not cheap, but definitely worth the investment.

 

Thanks for the input, I will get it inspected before dyno tuning and an aluminum driveshaft is right around the corner.