From an earlier long thread on rocker arms it was suggested that it would be better to use a higher ratio rocker arm than a higher lift on the cam lobe. I agree if one had a 1.7 rocker arm in mind from the start than grinding the cam that way would be beneficial.
In my case I was just toying with the idea and wondering in todays world if that would be a feasible way to go in a mostly street car with some strip time. Again in my case I expected peak power to be in the 5800 to 5900 rpm range with shifting in the 6200rpm range.
Well after getting the car on the dyno and after some tuning the car was making peak power at 6350rpm and still climbing. It was shut down at the 6350 mark and I could not pursue it further as there were other cars waiting to get on the dyno and I already went past my allotted time.
So maybe shifting in the 6700-6800 rpm range. Intake valve is 2.08" on the AFR 195 competition heads I will be putting on the car. They come with a light weight valve setup for higher rpm operation. Current valve lift is .576". Was thinking about picking up a few more ponies with getting the lift up to .600" or so and also the increase with effective duration.
Joe has stated it just is not worth the extra money spent for the 8 rockers arms for the few horsepower that one might get. My thought was based on how well the new AFR 195 Competion series heads flow that it might be worthwhile having the intake valve spend a little more time at the higher lift.