This set of four Bilstein shocks was revalved by Bill Hindorff @ Bilstein for a set of linear 750 lb/in front springs and linear 154 lb/in rear springs.(Global West in F and 9C1R best shock for them of all I tried) Using degressive valving, the fronts are 1650 comp and 6410 rebound. A stock Bilstein #1104 would be 1200 comp and 4275 rebound. The rears are set at 1035 comp and 3200 rebound. A stock #0929 would be 1035 comp and 2135 rebound. These shocks are very firm and controlled with very stiff front springs without being harsh, but on a stock Impala SS front spring, they ride objectionably hard. They are even worse with a FE 1 spring set. With a Hotchkis set (a progressive 630lb/in front spring) and all that rear rebound, brake dive all but disappears, as does squatting on acceleration. There is zero float at high speed with very immediate and firm suspension response to dips, without being harsh. $250 plus shipping
They can be shipped from 01835 until mid Sept
or 23168 after that.
PM for more tech info but there will be a delay between messages