What diameter torsion bars?

PoisonDart74 said
http://www.bigblockdart.com/techpages/torsion.shtml pick your poison.

FYI, these cars were wayyy under sprung from the factory. This was back when the cushy ride was dominant.

The usual fix with a v8 car is to go with a .890-1.03 bar for street, good handling and modern feel, and a slant .810-.870 for drag racing for quick weight transfer. Adjust accordingly.

I just picked up a 1" bar from Just Suspension, $188 including shipping after discount code 'shopalizer'.

If this helps, hit the 'thanks' button and enjoy your weekend!

Suprisingly I always thought it was rather stiff already. I didn't want to make it too stiff but I was finding the .890 recommended for restoration and more modern suspension. Is the .890'' a good compromise? I gathered the .870" was the standard on the GTS. So .02" makes a noticeable difference?

How fast does the stiffness go up as you increase the diameter?

Summit carries Mopar Performance. They have a set of the .890" for $315 and a set of the .920 for $319.