I have 1982 Camaro Berlinetta V6, can anyone tell me the correct battery size for my car? Simple question,
kids stole owners manual. Store's battery charts don't go back to 1982, Thanks for your response! Bill.

 

I usually just get the biggest, meanest, battery that will physically fit.

 

Factory size is 75 series. Pretty sure a 72 or 74 will fit in any of these cars.

Fortunately year & engine aren't a factor in the size. The same battery size was used in all 82-92.

Avoid "dual terminal" batteries if you upsize it. The hood may come uncomfortably close to the top terminals if a taller batt than the original.

 

Further postulation would include the advice to consider standard construction lead-acid batteries only. While glass mat insulated cells can make just as much (and possibly slightly more) crank energy when new, after a period of time that advantage will be lost, and overall life of a glass mat battery is lower as heat increases. They perform best as constant use utility batteries.

Avoid the temptation and sales literature suggestions that AGM cells are overall "better" at everything simply because they may be better at one thing. They CAN be better but only under specific conditions. If you have a vehicle with a chassis power battery and separate cranking battery, an AGM battery might be a good choice for the battery installed under the back seat or in the trunk. Installing one in an engine compartment is not optimal, even though the sales literature neglects that fact.

I tried to fit a Group 78 in my '86 and the tray is not adequate without butchering it. It has had the battery replaced four times since it was new. Do the math. It's 35 years old, and each battery has lasted about 7 years, with one of them lasting 9 years.