This post is about the value of replacing the factory drive shaft in the 2011-13 V6 Mustang with an aftermarket aluminum (or carbon fiber$) model. I had a few questions after looking around the web that I would appreciate some input on.
I recently purchased a v6 Auto Mustang as a daily driver. I plan on modding the car to make it a solid v6 mustang rather than a weekend toy (Not that I don't wish I could,
but then it would have to be a manual!).
Driveshafts seem to be the rage right now and I saw the new Driveshaft Shop aluminum driveshaft that American muscle just brought in. After a little research I question the value of a swap for a vehicle that will only see a course for my driving fun rather than best lap time.
From what I have read the stock V6 driveshaft is lighter than the massive stock V8 shaft and a V6 after market swap will only shave 8lbs off of stock. From what I have read rotational mass has a ratio of 4:1, so the effective weight reduction is only 24lbs.
Assuming the above is correct the mod isn't bad if I was racing the car but with my use I don't think it represents that big of a value for $800. That could be a new exhaust system or tuner instead. But, what did get me thinking was the driveshaft joints and pinion correction that come with the new shaft. I plan on lowering my ride and if the driveshaft eliminated the need for replacing the upper control arm the driveshaft becomes a little more attractive.
Can anyone speak to the pinion correction through the driveshaft vs the control arm?
Anyone want to add in on their experience with an aftermarket aluminum driveshaft for the V6 in general?
Also, a question regarding the weight - is there also a ratio effect for unsprung weight? In other words is the rotational mass ratio the only ratio to calculate? Or is the rotational mass of 24lbs also then amplified by being unsprung? I have seen too many differing ratios for unsprung weight from 2:1 to 10:1. I don't why but I always thought it was 2.5:1, but I don't have anything to back it up. If anyone could provide the math for the effect of reduced unsprung weight, rotational mass, and clarify if there is a multiplier effect that may render an 8lb difference to have the effect of reducing 50+lbs please speak up!