Race/ slant 6 torsion bars

The E/B body bars are longer. They need to be larger diameter to get the same spring rate as a shorter bar. I think that's one reason why you'll find the smallest stock diameter for the E-body to be larger than the smallest stock diameter for an A-body. That and e's had more weight on the nose.

.884 will have a wheel rate around 105 lbs/in
.86 will be around 94 lbs/in
.845 will have a wheel rate around 88 lbs/in


A body
.810 in an A about 74 lbs/in.
.830 was around 82 lbs/in
810 might have been in the smaller, lighter first generation A's only.

1970 Plymouth FSM shows .86 smallest for Barracuda, and .83 smallest for A-body

upload_2020-2-2_8-56-7.png