Brilliant. I would have never put that together, even after the guy at crane said ‘yah I have in file for that’ and gave me the same duration number that you just did too.

If it’s a crane cam the one he said they had on file was these specs:

280 intake
290 exhaust

@ .050
224 intake
234 exhaust

.465 intake
.488 exhaust

114 degree lobe separation

Now I just have to go measure it to see if it jives with these crane specs