Recently installed DSS one piece aluminum and adjustable UCA and LCA. I'm at -2 on the trans flange and about -0.5 on the pinion. Total pinion angle of -2.5 has yielded NO vibrations and driveshaft feels great. BUT..... I understand that because this driveshaft is a CV type, the angle is less critical?
My DSS doesn't vibrate on the dyno...at 150 mph ( 6 krpm in 4th gear)..on my 2010 auto. It has a CV at the axle end. ( 285-40-18 rear's on a 10" rim, with 3.31 rear gear. 26.97" diam rears). The shaft master's DS on a 2010 auto is a bad combo for vibration, but the one I had..has no CV joint. Sold it to a local buddy, who uses it on his 2008 manual, zero problems on his so far. But they are a trick to set up. Another buddy who also has a 2010 auto + shaftmasters DS, thought he had the pinion angle dialed in, then finds out he still has vibration...@ 120 mph. No big deal since he stays < 120 mph. That's the best he can do, after a lot of endless tweaking.
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