Battery discussion

It all depends on what you are trying to start. A relatively low compression engine with mild valve springs and a big alternator? Street drive? Anything will start it. Add high compression, stiff springs, big fans, big fuel pump, small alternator, heat soak with quick turn around at the track. Think about track use. Start the car up. Go to the lanes at close to idle. Start 3-4 more times in the lanes. Make a 8-13 second wot pass, idle back. Now turn the fans and water pump to cool down. Repeat for up to 8 rounds. Now much time does the alternator have to replentish the battery?
Doug