Because I spent approaching $800 and considerable time rebuilding a transmission core, only to find out that, despite coming from a mustang, some previous owner had somehow installed a longer tailshaft aod into it... I've got a transmission that's 1" too long and need to cut down my driveshaft. Of course i could uninstall it, tear down both transmissions, and put in the output shaft from the aod I uninstalled, but I'm not a fast worker and I could be looking at around 12 hours of time to R&R the transmission, AGAIN, and tear down two transmissions for the swap. Lots of wasted time and nothing to show for it, but the ability to refit my stock drive shaft with 125,000 miles and 22 years and original u joints on it.
As with anything, while you're working on it, might as well build it better!
I'm looking at $200 to shorten and rebalance, with new u joints, at the better shop in town. New u joints in themselves are better, and since this guy is a driveshaft specialist, I imagine the balance might be better than factory too?
Now, I'm not going to go quite that fast, not on the east coast anyway.... but I remember an earlier discussion about how at 120mph+ the driveshaft is actually one of the earliest and most egregious weak points at high speed for our cars. I think I was reading something about either the balance, or, the bearings in the u joints coming apart?
So if I wanted to improve, would certain performance-marketed heavy duty u joints be the biggest upgrade?
The other option is aluminum. I know it's rotating mass, which for good reason it is much more beneficial to reduce than the non-rotating inertia of the rest of the car, and I understand that; but is the weight reduction/ strength improvement going to be so very dramatic?
Is it worth spending $300 on an aluminum driveshaft?
I can try and find a junkyard driveshaft from a p71, it has been advised, but I mostly struck out today. Unless someone here has one to sell and ship ASAP
Give me the skinny on performance driveshafts!
As with anything, while you're working on it, might as well build it better!
I'm looking at $200 to shorten and rebalance, with new u joints, at the better shop in town. New u joints in themselves are better, and since this guy is a driveshaft specialist, I imagine the balance might be better than factory too?
Now, I'm not going to go quite that fast, not on the east coast anyway.... but I remember an earlier discussion about how at 120mph+ the driveshaft is actually one of the earliest and most egregious weak points at high speed for our cars. I think I was reading something about either the balance, or, the bearings in the u joints coming apart?
So if I wanted to improve, would certain performance-marketed heavy duty u joints be the biggest upgrade?
The other option is aluminum. I know it's rotating mass, which for good reason it is much more beneficial to reduce than the non-rotating inertia of the rest of the car, and I understand that; but is the weight reduction/ strength improvement going to be so very dramatic?
Is it worth spending $300 on an aluminum driveshaft?
I can try and find a junkyard driveshaft from a p71, it has been advised, but I mostly struck out today. Unless someone here has one to sell and ship ASAP
Give me the skinny on performance driveshafts!
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