Torsion Bar Recommendation

0.890 was the size the factory used on big-block Formula S cars. I installed them on my small block fastback long before 1.0+ aftermarket bars were available. These days everyone goes for larger diameter bars... it makes me wonder how the spring rates compare? Anyway, I would say .89 or .92 would be adequate for street cruising, combined with a sway bar. Remember, it's the sway bar that provides roll stiffness when cornering, and that feeling of quick turn-in that people associate with good handling. Higher front spring rates just provide anti-dive when braking, and they create a harsher ride. They also reduce weight transfer on acceleration, which is bad in the 1/4 mile. Anyway, I am kind of an iconoclast on this issue — I actually think the handling of my slant six convertible with factory .85 bars is OK, combined with a Hellwig hollow front sway bar. Real-world backroads are bumpy...