What affects power more in a camshaft....high lift or longer duration?

65 Cuda 340 said
The duration at .050 in the first chart is just the number you get by multiplying the advertised duration by .85. Not accurate, not sure why Mopar Performance ever pushed that. The chart below (which I think I might have got off this site) I'm pretty sure has more accurate @.050 numbers:

View attachment 1716501320
Click to expand...

That was for small blocks. Here's one for big blocks. Probably from the same source.

1768949214657.jpeg