[acgr76]

hi, i have a 1981 chevrolet scottsdale 4x4 pickup, automatic transmision, V8, i'm having problems with the starter i have changed it 3 times and it keeps breaking down, can it be an electrical problem or a distance problem??
And what is the clasification c/k?, 10/20/30?, 1/2-3/4 tons?, chevy/chevrolet/GMC??