Hey i guys i have a 93 f150 351 zf sas swapped with a 4 inch lift. i got the coils from jbg there not the superflex because i was afraid of ( ) coil bow but it rides like a bucking board! Anyone with thoughts?

 

Bump anyone

 

Opting for stiffer coils was probably a poor choice.

 

Post up a link to the coils you used.

If you somehow got ttb coils that would explain it, they're something like 60% higher rate than straight axle Springs.

 

Yeah I just looked up JBG coil springs on google and every option they have are for 1980 to 1996, you have the wrong springs buddy.
The TTB springs have to fight the force of the axle levering against them so they are much stiffer than the solid axle coil springs.

 

I was under 73/79 and went to coil springs on jbg ill look again but they fit nice in my 78 upper buckets hmmmm