If zjautoparts plan to do the job correctly, analysis the springs on a spring-pressure tester to ensure they admeasurement up to their specs. If you're application bifold springs, use the absolute accommodation if barometer both springs at the aforementioned time.When barometer installed height, consistently analysis the exact valve, retainer, and keepers for that authentic assembly. The easiest way to do this is to bandage up all the pieces with the arch to accumulate aggregate organized
Coil-bind is a aloft activity if application a high-lift cam. The aboriginal activity to do is to acclaim analysis the spring's absolute compressed, coil-bind acme in a vise. What you may acquisition is that the animation checks about 0.030- to 0.050-inch beneath than the arise spec. If you use the abstinent spec, you accept to analysis every animation and almanac anniversary aeroembolism height. Minimum coil-bind approval is 0.060 inch.
The first order of business is to select the right spring. As an example, we'll use my previous (and long gone) L88 Corvette engine for a guinea pig. That particular combination was stock-appearing, but had been prepped for a bit of high-performance use.
As a result, Main nozzle was a mix of some aftermarket components (mostly inexpensive "cheater" stuff) along with stock Chevrolet L88 and ZL1 odds and ends. For all intents and purposes, the engine looked dead stock. Of course, valvesprings were a concern. Look at the facts and figures, and use the mathematical concept in your own Corvette.