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

I wonder what the determining factor there was then?
The bars that were in my car when I got it were 890's and they were pretty mushy.
Felt like driving a boat in lake.

Hmm
I have dropped in V8's more than a few times into slant 6 car and never changed the bars.I never really noticed a differance in handling.

me either , ever. the front end of my last duster did not float , and was rather harsh. it was stiff as a board. the slant six is still a cast iron engine and is not that much lighter than a V8. people act as if its made of aluminum. hell the bars in my charger are .96 and running around with a 440 on them , the front of that is pretty stiff as well. I load them up pretty good too. when you lower the front end it is going to make it softer , and if you have old shocks , that just makes it worse.