steveespo said:I have run Drive Shafy Shop 3.5" 900HP rated aluminum in my car since 2/11 with no issues. My car is lowered 1" and has the the stock UCA and Eibach adjustable LCA with Ford Racing LA brackets. I have had zero issues with this unit, no high speed vibrations or clunking/binding. The DSS unit comes with a CV joint at the pinion flange and can take up small variations in pinion angle due to lowered suspension geometry. I haven't used Dyno Tech's product but looked on their website and it seems they use U-Joints front and rear. If this is the case adjustable upper OR lower control arms can be used to adjust pinion angles to eliminate binding during suspension travel.
I installed mine in the driveway. I did have to get the rear up on some ramps after it was installed to take a measurement. that could also be done with a jack and two jack stands.racered302 said:It is, and that will never change. So does that mean it could be install while on a lift and I wouldn't need to find a pit?
the distance from the flange to the shaft has to be between xxxx and xxxx (dont remember the distance now) its easy to take the measurement and just to make sure it was installed correctly.racered302 said:What would I be measuring for, I really have no idea. If the DSS doesn't need angle adjustments then is it clearance?
Justin said:It doesnt if you are at stock ride height.
just be prepared for the possibility of needing adjustable UCA or LCA's...even with the DSS. both have documented cases of vibrations. both have been able to be solved with proper pinion angle adjustments or sometimes just clocking the driveshaft 180 degrees. theres no magic bullet to bolt in a 1-piece driveshaft in place of a 2-piece. there's a reason ford put it in there. think about it. if CV's were vibration slayers, why didn't ford put in a 1-piece just like the DSS? it has to be cheaper than that 2-piece with a carrier bearing. the 2-piece is in there because only a 2-piece can make up for poor factory geometry.racered302 said:So I guess the way to go for me would be the DSS. Nothing special, install it, check you work, road test and hope you don't see blue flashy lights in the mirror. Hope it's that simple. Nothing ever is.