Here's the spec from Interstate It was a side post battery, like most GM vehicles

Product ID:MTP-75(Automotive Truck)
Amps:875
Cranking Amps:875
Cold Cranking Amps:700
Voltage:12
Termination:S
Weight:32.8
Width:7.25
Length:9
Height:7.63

I picked the best they offered for the '82 Firechicken, so CA and CCA could have been different

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On some nights I still believe that a car with the fuel gauge on empty can run about fifty more miles if you have the right music very loud on the radio. - HST

1983 300SD - 305000
1984 Toyota Landcruiser - 190000
1994 GMC Jimmy - 203000

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