Kevin -

I took readings on the lobes of both cams at opening/closing plus both sides of the lobe @ .050"/.100"/.200"/.300" to get an idea of what was happening, but I didn't save the readings on a plot - just used them to see if the points were the same at a given lift for both ramps..... they appeared to be equal on both sides of C/L. I can do a plot on another engine, but I've already installed all of the valves and springs in these heads.

I *think* I have these about as close as they can be and was very surprised by the difficulty of doing this on a hydraulic lifter assembly. The problem I see with trying to set the opening point of the lobe is the necessity (and difficulty) to get to exactly zero lash.... fairly easy with adjustable rockers, but near impossible with the hydraulic rack. Also, with a forced induction engine, I felt that it it is more important to not close the inlet valve too early than to set the opening point early and have the valve also close early. I'm concerned that allowing the valve to close early will raise the dynamic CR and cause detonation.

To make the job easier, I need to figure out a better method than a feeler gauge because the gauge doesn't follow the curvature of the lifter nose or the cam lobe..... there's always a little stiffness in the gauge that can throw off the reading. If anyone has a solution, I'd like to hear it.

You want the profiles for a 3.0L cam?

Frank