akrt
Member
I'm am going through my motor. I'm having the heads CNC ported. I'm going to change my cam to something a little bit bigger. I currently have a .736 lift cam with 285 duration at .050. I am going to go to a .785 lift cam with 296 duration at .050. Though these are drag race specifications, my car is mainly street driven. I know the faster and higher lift on the cam lobes, the faster the valve springs wear out. Anyone have any experience with cam/valve springs for this amount of lift that street drove theirs, and how long your springs lived? I've got a valve spring pressure tester. I plan on running the springs for a bit and testing them against their brand new specifications and retest them again and again every several weeks to see if they fall off very quickly. Obviously, I'm concerned about longevity. Bad oil pressure, bad rod bolts and bad valve springs kill engines. . .