So I stumbled on an interesting HEI phenomenon

Well I'm not looking to play around with it too much. I'm afraid I'd end up buying another ignition module if I run it too much more. I have a scope for the modis at the shop. The Battery I was using was an Interstate Optima red top from 2000! I talked to the Interstate rep today when he came to exchange cores and batteries and He said the Spiral cell Batt from that time period were very good and lasted around the same number of years as mine. I have a feeling even though the battery was reading 12.5 volts there just wasn't enough current being generated by the "plates" and electrolyte. Or is the word I should be using watts since it also seemed to be a function of how long the draw was applied to the battery? It tested to about 255 cca of 800 but that is the Interstate ED18 tester and it only pulls current for a short time. Thats why I could start it after a few minutes and it would drive another few blocks before shutting down. The Battery also caused the charging system, after I replaced the alternator, to run above 15.1V. (tried 2 different regulators) The new battery runs 14.4-14.5V.