How many cold cranking amps for 1990 truck 6cyclinder?

The cold cranking amps (CCA) required for a 1990 truck with a 6-cylinder engine depends on several factors, including the engine size, climate, and vehicle accessories. Here are some general guidelines:

- For mild climates (temperatures rarely below 0°F), a CCA rating of around 550 to 700 amps should be sufficient.

- For moderate climates (temperatures occasionally dropping below 0°F), a CCA rating of around 700 to 850 amps is recommended.

- For cold climates (temperatures frequently below 0°F), a CCA rating of 850 amps or higher is advisable.

It's important to note that these are just estimates, and the actual CCA requirement for your truck may vary. Refer to your vehicle owner's manual or consult with a qualified automotive professional for the specific CCA rating recommended for your vehicle. Additionally, consider the condition and age of your battery, as older batteries may require a higher CCA rating to compensate for reduced cranking power.