My valve spring have about a dozen passes on them and, as part of my maintenance, I check opening pressure. new they checked in at 300 lbs. Now they check at 260-280 lbs. At what point should I change them?
540 BBC, AFR 357 heads, solid roller cam 806/765 lift
Currently using a Simpson Hybrid that is a few years old. Want to upgrade to something newer this year for myself and or my son who is about the same size. What are you using,and what do you recommend?