What is the highest Cold cranking amp battery a 93 ford tempo gl car can take? With stock alternator?

Get the highest CCA battery that will fit under the hood. Having more doesn't "force" extra power into anything, it can't cause any harm, just gives you more cranking time before it goes dead.





Also, by having a larger battery, the relative load on it is smaller which means less wear on the battery, it will last longer before needing replacement.





Don't worry about the alternator. It only has to replace the power you took out during cranking. If you have a larger battery and cranked it a longer time, it would just take longer for the alternator to recharge the battery, no big deal.
What is the highest Cold cranking amp battery a 93 ford tempo gl car can take? With stock alternator?
Technically unlimited. In fact, a battery with a high reserve and CCA rating will improve your starting and charging system's performance.





Your only limitation is the case dimensions, or battery class.