Looking for information from the past.
My heads are Tim’s stage 2’s, with no shims under the valves and my installed spring height is 1.540”
Tim’s used CB valves and dual valve springs.
I wanted to put in a spring with more lift until coil bind and John had a NOS set of Bugpack 4046’s, which are supposed to be good up until .630” lift.
Were the Bugpack designed around a larger installed spring height? With my setup they bind before .500”
I found one old thread that mentioned 1.8” for the installed height...