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1 piece DS ?s

501 Views 6 Replies 4 Participants Last post by  AZlb5.0
I’ve been working, and upgrading LS based cars for about 14 yrs now. My latest project is an 04 GTO. One of the upgrades I’ve done, is a 1 piece driveshaft, and with GTOs there seem more draw backs then positives . From limitation on MPH, and RPM to vibrations in the drive train.

What are the +/- of a 1 piece in our cars. Are they worth it. I like that immediate throttle response you get from them and transfer of power, but if there are too many draw backs I’ll stick with OEM.

Immediate plans are intake, exhaust E85 intake manifold and tune. Future upgrades a nitrous plate system.

Any and all comments and advice welcomed.
TIA
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in the earlier years (S197 2005-2014) the one-piece driveshaft was mainly to eliminate the rotating mass of the factory boat anchor driveshaft, and the losses caused by the extra joint in the middle. On the other hand, the factory driveshaft was usually a lot smoother and easier for pinion angle adjustment; because the driveline angles in the S197 are screwed up and that extra joint helps to make the whole system more forgiving.

In the S550 chassis, I woulda thunk, that they woulda fixed the drivetrain angles and the two-piece driveshaft would not be needed ... apparently not.

So, the one piece driveshaft does save weight and reduces drivetrain losses, but the pinion angle becomes more critical and other changes like lowering the car can throw it off.
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