08-12-2022, 07:37 AM

Brock1030

Member

Join Date: May 2021

Location: Raleigh, NC

Posts: 62

Trans Am Freedom Battery Capacity Insights

Any insights as to the build sheet, box 47 numbers for batteries and what capacity (cold cranking amps or cca) of battery to which they correspond?

My car, a ‘79 Trans Am SE (Y84) W72 WS6 4 speed car w/air and no rear def. Box 47 number for the battery is 401. Have seen some references that this is the last three digits of the GM part number, but unclear.

Other numbers reported on various different cars are 400 and 402. Suspect these each have different cold cranking amps (cca). Any insights?

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