At the last Classic Adelaide event I again noticed that on a slight incline at over 7000 rpm the car would not pull. To rectify this from prior events I had port matched the inlet manifold and given it a clean up. Didn't notice any difference.
I am suspecting that maybe the ignition system is breaking down at high rpm and I am seeing the misfires as just reduced power. Could that be the case? Are the MSD systems worth looking at as something that will ensure a better spark at high revs? Couldn't find any past threads on the topic...
I have also thought that maybe the coil is not able to draw sufficient current due to the ignition switch (10A rated) and Delphi bulkhead connector (20A rated) that it goes through. To measure the amps drawn by the coil I could just run a multimeter inline in the coil power feed. My multimeter is rated to 10A only so marginal?