Thanks Brent,
That's what i needed to hear. Thanks, for correctly restating what I meant to type this morning, 256 degrees duration at 0.050" lift. I do want some more power to offset the added weight of the Dart Block. I also have read in my research what you stated regarding increased port size potentially having the effect of bogging the engine down. I just want to make sure that there is enough velocity and flow to provide the power at the upper end. Investing in a lightweight crank, rods and pistons so that the engine easily spins to 8,000 rpms is worthless if there is not enough air/fuel mixture to support it.
Hope that your family had a nice Christmas.
Now get back to work, you have engines to build
Jim