s6 to V-8 do I need to change torsion bars

What he said
Well, if your ride height is set to where the /6 bars let the car settle onto the bumpstops on every corner, yeah it handles. And when the wheel drops into a hole, big deal. And when you hit a speed bump again all that shock goes into the bumpstops.So what if it rattles the fillings outta yer teeth.And eats bumpstops.The only way around it is stiffer shocks.And then the ride goes to pot.
I was done with /6 bars on the street,decades ago.If anyone wants to try and follow me around and keep up,with your /6 barred V8 road burner, you better have a lot more motor than me.Heehee
IMO the 1.03s are barely adequate, under my 366 S-clone. The only reason I havent upgraded them is Im nearly 62, and should be slowing down soon. So they tell me.
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Danco; Like was said, your car wont catch fire if you dont swap them out. Drive the car for a good long while. Perhaps they will suit your driving style and environment just fine.The bars are just one part of the system,that includes the shocks,the swaybar,the bumpstops,the bushings, the alignment settings,the powertrain, and even the brakes.Its a system. Your current system was designed by some very competent engineers.
Let the fillings in your teeth be the decision makers.