What is the difference between Custom performance CAMS and performance CAMS to suit VZ VE VF Alloytec LY7 LE0 LLT LFX LF1 LFW 3.0L 3.6L V6 engine?

The one are the custom camshaft, you will need to provide your own specifications if you purchase our custom grind cams. On the other hand they are the performance camshaft and we only have one grind available (210/210).