Measuring lift and duration of stock and perf cams

[Ccmano]

[Pete]

Just a few questions.
1.What is best phasing of these cams for best performance?

2.Do you have before n after dyno #'s on these or previous cams?

3.How did you find out the specs of your previous cams?

Pete

[efnfast]

Originally Posted by grahambehan

Lee, the flat area needs to be larger than the tip of your indicator, at least equivalent to the dia of the wear marks on a used lifter, for you to measure duration accurately.

Graham

That makes perfect sense. Where Lee's tool is falling off the edge, a larger diameter lifter would still be on the lobe creating more duration.