Cam Upgrade for my 408. Need some advice.

The performance of a hyd cam is being compared to the expected performance of a sol cam. With the sol having 0.018-.020" lash, you would need to subtract about 8* from the sol to get a rough idea how it would compare to the duration of a hyd cam. So the sol with 242 @ 050 would act like a hyd with 234 @ 050. As I said earlier, I doubt 7* more intake duration is enough to add 70hp...