One Piece Driveshaft

[SCGT500]

Been thinking about upgrading to a one piece driveshaft, but keep hearing about balancing issues.

Not the shaft itself, but w the cars diff either not being centered, or the pinion angle not being right.

Talk of lowering the engine to help and/or adjusting/shifting the rear diff.

Both sound pretty involved and hard to tell if you are really getting it straight without a lot of different measuring...and on a lift.

Any thoughts on this?

Those that had the '03/'04 Cobras w IRS was this an issue back then also?

Not looking to add more work just to install a lighter driveshaft.

 

[ls110]

I have been running a carbon fiber one piece drive shaft (DriveShaftShop.com) for 3 years without issue and did not make the adjustments you suggested.

 

[SCGT500]

Thanks for the input.

I think most of the replies Ive seen have been w aluminum shafts, but dont know if that makes a difference.

With what I do and going to the track 3 times a year I cant justify the extra cost of the CF.


Now if my Shelby sells I may just justify it. LOL

 

[steveespo]

In a S550 application I cannot see an issue with a one piece carbon driveshaft unless Ford has intentionally for packaging reasons set the transmission output flange and the pinion angle way out of phase. In an IRS car there is little to no movement of either the trans or diff, unlike a solid rear axle car that articulates in multiple directions. If the one piece has a CV joint on it like Drive Shaft Shop pieces, then so much the better. I have had DSS aluminum and now CF shafts on my S197 since 2011 with no issues.
Steve

 

[VoodooBoss]

In a S550 application I cannot see an issue with a one piece carbon driveshaft unless Ford has intentionally for packaging reasons set the transmission output flange and the pinion angle way out of phase. In an IRS car there is little to no movement of either the trans or diff, unlike a solid rear axle car that articulates in multiple directions. If the one piece has a CV joint on it like Drive Shaft Shop pieces, then so much the better. I have had DSS aluminum and now CF shafts on my S197 since 2011 with no issues.
Steve

Good info right there. A CF DS is about the only mod I have planned for my GT350 this year.

 

[gww52]

The Terminator had a one piece aluminum DS.
I put a DSS aluminum in my 12 Boss and it made a huge difference.
It made the entire car much more smooth.
It baffles me why they use a two piece on the GT350(bean counters I suppose).

 

[SCGT500]

In a S550 application I cannot see an issue with a one piece carbon driveshaft unless Ford has intentionally for packaging reasons set the transmission output flange and the pinion angle way out of phase. In an IRS car there is little to no movement of either the trans or diff, unlike a solid rear axle car that articulates in multiple directions. If the one piece has a CV joint on it like Drive Shaft Shop pieces, then so much the better. I have had DSS aluminum and now CF shafts on my S197 since 2011 with no issues.
Steve

This was my thought, but looking on different forums and watching sales adds...I'm seeing some very upset people who bought a one piece for their S550 and had bad results and/or have them for resale.

This concerns me


To me...with little to no trans and diff movement (like a solid axle car) there should be less issue?


.

 

[cj350]

I spoke with DSS last week on the one piece DS for the GT350. All produced for the GT350 have the foam core for harmonics as well. It is certainly on my list as 9-12lbs as I recall of rotational mass lost is noticeable as it was in my GT500.

 

[SCGT500]

Is the foam core GT350 specific?