Quote:
Originally Posted by USAZR1
VB&P told me they manufacture at least five springs at a time and that every one will have a different rate.
If removing both front shims only drops the front ride height 1/2" and will also lower the spring rate of an already soft spring,I probably should look at other lowering options for our 94.
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I consider 1/2" a decent drop. You could try flipping the shims to the outside and try it out without altering the bushing permanently (allowing you to go back). Technically you aren't changing the spring rate...just effectively changing the rate by unspringing it some with the initial tension being softer.
I think you get the idea from the way you replied, but I would offer that the shock stiffness on the front end of a c4 seems more critical to me than the spring- even on the ZR-1.
There seems to be only 5 options on transverse springs (for the front):
1) stock
2) stock bushing with shim(s) removed (less drop)
3) lowering wedge with shims
4) lowering wedge with no shims (slammed -->don't do it- cars is dangerously low and close to bumpstops. Also a gap between spring and frame when car is jacked up).
5) VB&P adjustable spring; this is much lower and even the taller setting is probably well into lowered ride height territory. Advantage is high spring rate for heavy LT5 and you don't need the special GM spring tool or have to remove an A-arm to install because it sits flat at rest (quick and easy install).